Community Water System · PWSID AK2240464

Nanwalek

Serves 281 peopleSurface WaterOwner: Native AmericanNanwalek, Alaska
Nothing open that measures the water, but 1 open testing or paperwork violation.

A missed test is not evidence of bad water. It also is not evidence of good water: for that period nobody checked.

On record since 1994: 357 violations. 3 over the limit · 15 treatment lapses · 325 missed or late tests · 14 notices or reports. Most recent began 2025-09-01.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

3Over the limit
15Treatment lapse
325Missed or late test
14Notice or report1 open

More violations on record than 97% of active water systems in Alaska. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1994 · Missed or late test: 81994 · Missed or late test: 81995 · Missed or late test: 121995 · Missed or late test: 121995 · Missed or late test: 1219951996 · Missed or late test: 71996 · Missed or late test: 71997 · Missed or late test: 51998 · Missed or late test: 51999 · Missed or late test: 22000 · Over the limit: 12000 · Missed or late test: 220002001 · Missed or late test: 22002 · Missed or late test: 12003 · Treatment lapse: 22003 · Missed or late test: 92003 · Missed or late test: 92004 · Treatment lapse: 22004 · Missed or late test: 122004 · Missed or late test: 122004 · Missed or late test: 122005 · Treatment lapse: 22005 · Missed or late test: 112005 · Missed or late test: 112005 · Missed or late test: 1120052006 · Missed or late test: 152006 · Missed or late test: 152006 · Missed or late test: 152007 · Treatment lapse: 12009 · Notice or report: 12010 · Notice or report: 120102014 · Missed or late test: 12015 · Over the limit: 12015 · Treatment lapse: 12015 · Missed or late test: 82015 · Missed or late test: 82015 · Notice or report: 120152016 · Treatment lapse: 42016 · Missed or late test: 62016 · Missed or late test: 62016 · Notice or report: 32017 · Treatment lapse: 22017 · Missed or late test: 42018 · Treatment lapse: 12019 · Over the limit: 12020 · Missed or late test: 182020 · Missed or late test: 182020 · Missed or late test: 182020 · Missed or late test: 1820202021 · Missed or late test: 512021 · Missed or late test: 512021 · Missed or late test: 512021 · Missed or late test: 512021 · Missed or late test: 512021 · Missed or late test: 512021 · Missed or late test: 512021 · Missed or late test: 512021 · Missed or late test: 512021 · Missed or late test: 512021 · Missed or late test: 512021 · Notice or report: 22022 · Missed or late test: 492022 · Missed or late test: 492022 · Missed or late test: 492022 · Missed or late test: 492022 · Missed or late test: 492022 · Missed or late test: 492022 · Missed or late test: 492022 · Missed or late test: 492022 · Missed or late test: 492022 · Missed or late test: 492022 · Notice or report: 22023 · Missed or late test: 292023 · Missed or late test: 292023 · Missed or late test: 292023 · Missed or late test: 292023 · Missed or late test: 292023 · Missed or late test: 292023 · Notice or report: 12024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Notice or report: 22025 · Missed or late test: 342025 · Missed or late test: 342025 · Missed or late test: 342025 · Missed or late test: 342025 · Missed or late test: 342025 · Missed or late test: 342025 · Missed or late test: 342025 · Notice or report: 12025
One square ≈ 5 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
<1% over the limit · 34% treatment lapse · 1591% missed or late test · 3254% notice or report · 14

Across Alaska, 88% of violations are missed or late tests and 2% are water over a limit.

Lead & copper at the tap

Utilities sample taps in homes most likely to have lead pipes, and report the 90th-percentile result: 9 in 10 homes sampled came in at or below this number. Above the red line (the action level) the utility must act. The action level is not a safe level; EPA's health goal for lead is zero. EPA's file does not date these results, so they are shown highest first.

Lead, 90th percentile 3 results on file · action level 15 ppb

5.1 ppb
1.2 ppb
0 ppb

Open now (1)

  1. 2025-02-25Public NoticePN Violation without NPDWR ViolationOpen

Every violation on record

  1. 2025-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  2. 2025-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  3. 2025-09-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  4. 2025-09-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  5. 2025-08-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  6. 2025-08-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  7. 2025-08-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  8. 2025-08-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  9. 2025-07-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  10. 2025-07-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  11. 2025-07-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  12. 2025-07-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  13. 2025-06-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  14. 2025-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  15. 2025-06-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  16. 2025-06-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  17. 2025-05-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  18. 2025-05-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  19. 2025-05-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  20. 2025-04-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  21. 2025-04-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  22. 2025-04-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  23. 2025-04-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  24. 2025-03-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  25. 2025-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
Show the other 332 entries
  1. 2025-03-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  2. 2025-03-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  3. 2025-02-25Public NoticePN Violation without NPDWR ViolationOpen
  4. 2025-02-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  5. 2025-02-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  6. 2025-02-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  7. 2025-02-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  8. 2025-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  9. 2025-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  10. 2025-01-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  11. 2024-12-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  12. 2024-12-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  13. 2024-12-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  14. 2024-12-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  15. 2024-11-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  16. 2024-11-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  17. 2024-11-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  18. 2024-11-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  19. 2024-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  20. 2024-10-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  21. 2024-10-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  22. 2024-10-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  23. 2024-10-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  24. 2024-09-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  25. 2024-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  26. 2024-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  27. 2024-08-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  28. 2024-08-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  29. 2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  30. 2024-06-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  31. 2024-06-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  32. 2024-06-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  33. 2024-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  34. 2024-05-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  35. 2024-05-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  36. 2024-05-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  37. 2024-05-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  38. 2024-04-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  39. 2024-03-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  40. 2024-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  41. 2024-02-01Revised Total Coliform RuleMONBack in compliance
  42. 2024-02-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  43. 2024-02-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  44. 2024-02-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  45. 2024-01-01Revised Total Coliform RuleMONBack in compliance
  46. 2024-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  47. 2023-12-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  48. 2023-12-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  49. 2023-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  50. 2023-10-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  51. 2023-10-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  52. 2023-09-01Revised Total Coliform RuleMONBack in compliance
  53. 2023-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  54. 2023-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  55. 2023-08-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  56. 2023-08-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  57. 2023-08-01Revised Total Coliform RuleMONBack in compliance
  58. 2023-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  59. 2023-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  60. 2023-05-01Revised Total Coliform RuleMONBack in compliance
  61. 2023-05-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  62. 2023-05-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  63. 2023-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  64. 2023-04-01Revised Total Coliform RuleMONBack in compliance
  65. 2023-04-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  66. 2023-03-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  67. 2023-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  68. 2023-02-01Revised Total Coliform RuleMONBack in compliance
  69. 2023-02-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  70. 2023-02-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  71. 2023-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  72. 2023-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  73. 2023-01-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  74. 2023-01-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  75. 2023-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  76. 2023-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  77. 2022-12-01Revised Total Coliform RuleMONBack in compliance
  78. 2022-11-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  79. 2022-11-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  80. 2022-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  81. 2022-10-01Revised Total Coliform RuleMONBack in compliance
  82. 2022-10-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  83. 2022-10-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  84. 2022-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  85. 2022-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  86. 2022-07-01Revised Total Coliform RuleMONBack in compliance
  87. 2022-07-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  88. 2022-07-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  89. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  90. 2022-06-01Revised Total Coliform RuleMONBack in compliance
  91. 2022-06-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  92. 2022-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  93. 2022-05-01Revised Total Coliform RuleMONBack in compliance
  94. 2022-05-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  95. 2022-05-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  96. 2022-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  97. 2022-04-01Revised Total Coliform RuleMONBack in compliance
  98. 2022-03-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  99. 2022-03-01Revised Total Coliform RuleMONBack in compliance
  100. 2022-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  101. 2022-02-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  102. 2022-02-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  103. 2022-02-01Revised Total Coliform RuleMONBack in compliance
  104. 2022-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  105. 2022-01-01NitrateMonitoring, RegularBack in compliance
  106. 2022-01-01StyreneMonitoring, RegularBack in compliance
  107. 2022-01-01EthylbenzeneMonitoring, RegularBack in compliance
  108. 2022-01-01TolueneMonitoring, RegularBack in compliance
  109. 2022-01-01BenzeneMonitoring, RegularBack in compliance
  110. 2022-01-01ChlorobenzeneMonitoring, RegularBack in compliance
  111. 2022-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
  112. 2022-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  113. 2022-01-01TrichloroethyleneMonitoring, RegularBack in compliance
  114. 2022-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
  115. 2022-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  116. 2022-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  117. 2022-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
  118. 2022-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  119. 2022-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  120. 2022-01-01Vinyl chlorideMonitoring, RegularBack in compliance
  121. 2022-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  122. 2022-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  123. 2022-01-01DichloromethaneMonitoring, RegularBack in compliance
  124. 2022-01-01Xylenes, TotalMonitoring, RegularBack in compliance
  125. 2022-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  126. 2022-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  127. 2022-01-01Revised Total Coliform RuleMONBack in compliance
  128. 2021-12-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  129. 2021-12-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  130. 2021-12-01Revised Total Coliform RuleMONBack in compliance
  131. 2021-11-01Revised Total Coliform RuleMONBack in compliance
  132. 2021-11-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  133. 2021-11-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  134. 2021-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  135. 2021-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  136. 2021-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  137. 2021-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  138. 2021-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  139. 2021-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  140. 2021-09-01Revised Total Coliform RuleMONBack in compliance
  141. 2021-08-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  142. 2021-08-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  143. 2021-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  144. 2021-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  145. 2021-07-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  146. 2021-07-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  147. 2021-06-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  148. 2021-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  149. 2021-05-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  150. 2021-05-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  151. 2021-05-01Revised Total Coliform RuleMONBack in compliance
  152. 2021-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  153. 2021-04-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  154. 2021-04-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  155. 2021-04-01Revised Total Coliform RuleMONBack in compliance
  156. 2021-02-01Revised Total Coliform RuleMONBack in compliance
  157. 2021-01-01StyreneMonitoring, RegularPeriod ended · no return to compliance on file
  158. 2021-01-01EthylbenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  159. 2021-01-01TolueneMonitoring, RegularPeriod ended · no return to compliance on file
  160. 2021-01-01BenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  161. 2021-01-01ChlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  162. 2021-01-01TetrachloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  163. 2021-01-011,1,2-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  164. 2021-01-01TrichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  165. 2021-01-011,2-DichloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  166. 2021-01-01Carbon tetrachlorideMonitoring, RegularPeriod ended · no return to compliance on file
  167. 2021-01-011,1,1-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  168. 2021-01-011,2-DichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  169. 2021-01-01trans-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  170. 2021-01-011,1-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  171. 2021-01-01Vinyl chlorideMonitoring, RegularPeriod ended · no return to compliance on file
  172. 2021-01-01p-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  173. 2021-01-01o-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  174. 2021-01-01DichloromethaneMonitoring, RegularPeriod ended · no return to compliance on file
  175. 2021-01-01Xylenes, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  176. 2021-01-01cis-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  177. 2021-01-011,2,4-TrichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  178. 2021-01-01NitrateMonitoring, RegularPeriod ended · no return to compliance on file
  179. 2021-01-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  180. 2021-01-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  181. 2020-12-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  182. 2020-11-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  183. 2020-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  184. 2020-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  185. 2020-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  186. 2020-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  187. 2020-06-01Revised Total Coliform RuleMONBack in compliance
  188. 2020-06-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  189. 2020-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  190. 2020-05-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  191. 2020-05-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  192. 2020-05-01Revised Total Coliform RuleMONBack in compliance
  193. 2020-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  194. 2020-04-01Revised Total Coliform RuleMONBack in compliance
  195. 2020-04-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  196. 2020-04-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  197. 2020-03-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  198. 2020-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  199. 2019-12-01Revised Total Coliform RuleMCLBack in compliance
  200. 2018-09-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Back in compliance
  201. 2017-11-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  202. 2017-10-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  203. 2017-07-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  204. 2017-05-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  205. 2017-05-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  206. 2017-01-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  207. 2016-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  208. 2016-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  209. 2016-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  210. 2016-08-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  211. 2016-08-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  212. 2016-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  213. 2016-04-01Revised Total Coliform RuleOtherBack in compliance
  214. 2016-04-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  215. 2016-03-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  216. 2016-02-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  217. 2016-02-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  218. 2016-01-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  219. 2016-01-01Coliform (TCR)Monitoring, Repeat Major (TCR)Back in compliance
  220. 2015-12-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  221. 2015-12-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  222. 2015-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  223. 2015-10-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  224. 2015-10-01Coliform (TCR)MCL, Acute (TCR)Back in compliance
  225. 2015-09-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  226. 2015-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  227. 2015-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  228. 2015-08-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  229. 2015-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  230. 2015-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  231. 2014-07-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  232. 2010-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  233. 2009-10-12Unknown contaminantSanitary Survey (TCR)Back in compliance
  234. 2007-06-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Back in compliance
  235. 2006-12-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  236. 2006-11-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  237. 2006-10-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  238. 2006-07-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  239. 2006-07-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  240. 2006-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  241. 2006-06-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  242. 2006-05-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  243. 2006-04-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  244. 2006-04-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  245. 2006-03-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  246. 2006-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  247. 2006-02-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  248. 2006-02-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  249. 2006-01-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  250. 2005-12-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  251. 2005-11-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  252. 2005-11-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  253. 2005-11-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  254. 2005-10-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  255. 2005-10-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  256. 2005-10-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  257. 2005-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  258. 2005-08-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  259. 2005-07-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  260. 2005-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  261. 2005-01-01LeadMonitoring, RegularBack in compliance
  262. 2005-01-01Copper, FreeMonitoring, RegularBack in compliance
  263. 2004-11-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  264. 2004-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  265. 2004-08-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  266. 2004-08-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  267. 2004-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  268. 2004-07-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  269. 2004-07-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  270. 2004-06-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  271. 2004-06-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  272. 2004-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  273. 2004-04-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  274. 2004-02-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  275. 2004-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  276. 2004-01-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  277. 2003-12-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  278. 2003-12-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  279. 2003-11-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  280. 2003-11-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  281. 2003-08-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  282. 2003-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  283. 2003-07-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  284. 2003-07-01Coliform (TCR)Monitoring, Repeat Major (TCR)Back in compliance
  285. 2003-06-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  286. 2003-03-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  287. 2003-02-01Coliform (TCR)Monitoring, Repeat Major (TCR)Back in compliance
  288. 2002-07-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  289. 2001-09-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  290. 2001-01-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  291. 2000-10-01Coliform (TCR)Monitoring, Repeat Major (TCR)Back in compliance
  292. 2000-10-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  293. 2000-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  294. 1999-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  295. 1999-07-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  296. 1998-12-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  297. 1998-11-01Coliform (TCR)Monitoring, Repeat Major (TCR)Back in compliance
  298. 1998-09-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  299. 1998-02-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  300. 1998-01-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  301. 1997-11-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  302. 1997-10-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  303. 1997-09-01Coliform (TCR)Monitoring, Repeat Major (TCR)Back in compliance
  304. 1997-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  305. 1997-01-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  306. 1996-11-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  307. 1996-06-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  308. 1996-05-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  309. 1996-04-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  310. 1996-03-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  311. 1996-02-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  312. 1996-01-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  313. 1995-12-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  314. 1995-11-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  315. 1995-10-01Coliform (TCR)Monitoring, Repeat Major (TCR)Back in compliance
  316. 1995-09-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  317. 1995-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  318. 1995-07-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  319. 1995-06-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  320. 1995-05-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  321. 1995-04-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  322. 1995-03-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  323. 1995-02-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  324. 1995-01-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  325. 1994-12-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  326. 1994-11-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  327. 1994-10-01Coliform (TCR)Monitoring, Repeat Major (TCR)Back in compliance
  328. 1994-09-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  329. 1994-07-01NitrateMonitoring, RegularBack in compliance
  330. 1994-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
  331. 1994-01-01EthylbenzeneMonitoring, RegularBack in compliance
  332. 1994-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance

System details

Population served281
Service connections55
Water sourceSurface Water
System typeCommunity Water System
OwnerNative American
StatusActive
CityNanwalek
EPA ZIP on file99603-6628

Areas served

  • Nanwalek, Kenai Peninsula Borough

Reading this record

Nanwalek is a community water system that draws from surface water and serves about 281 people in Nanwalek, Alaska. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.