Community Water System · PWSID AZ0407090

Chandler City of

Serves 247,328 peopleSurface WaterOwner: Local GovernmentChandler, Arizona
Nothing open right now.

On record since 2002: 205 violations. 1 over the limit · 200 missed or late tests · 4 notices or reports. Most recent began 2024-10-01.

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

1Over the limit
0Treatment lapse
200Missed or late test
4Notice or report

More violations on record than 98% of active water systems in Arizona. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2002 · Notice or report: 12003 · Missed or late test: 12003 · Notice or report: 12004 · Missed or late test: 12004 · Notice or report: 12005 · Missed or late test: 12005 · Notice or report: 1200520102015 · Missed or late test: 120152017 · Missed or late test: 312017 · Missed or late test: 312017 · Missed or late test: 312017 · Missed or late test: 312017 · Missed or late test: 312017 · Missed or late test: 312017 · Missed or late test: 312018 · Missed or late test: 332018 · Missed or late test: 332018 · Missed or late test: 332018 · Missed or late test: 332018 · Missed or late test: 332018 · Missed or late test: 332018 · Missed or late test: 332019 · Over the limit: 12019 · Missed or late test: 212019 · Missed or late test: 212019 · Missed or late test: 212019 · Missed or late test: 212019 · Missed or late test: 2120202022 · Missed or late test: 332022 · Missed or late test: 332022 · Missed or late test: 332022 · Missed or late test: 332022 · Missed or late test: 332022 · Missed or late test: 332022 · Missed or late test: 332023 · 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: 292024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492025
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 · 198% missed or late test · 2002% notice or report · 4

Across Arizona, 65% of violations are missed or late tests and 5% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Trihalomethanes (TTHM)2019-04-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)
Each dot is one over-the-limit violation: the measured value divided by the limit it broke, on a log scale. Most legal limits for chemicals are running averages set for a lifetime of drinking, so “just over” and “ten times over” are very different news. Hover a dot for the numbers.

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

3.1 ppb
3 ppb
2.5 ppb

Every violation on record

  1. 2024-10-01NitrateMonitoring, RegularBack in compliance
  2. 2024-04-01StyreneMonitoring, RegularBack in compliance
  3. 2024-04-01EthylbenzeneMonitoring, RegularBack in compliance
  4. 2024-04-01TolueneMonitoring, RegularBack in compliance
  5. 2024-04-01BenzeneMonitoring, RegularBack in compliance
  6. 2024-04-01ChlorobenzeneMonitoring, RegularBack in compliance
  7. 2024-04-01TetrachloroethyleneMonitoring, RegularBack in compliance
  8. 2024-04-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  9. 2024-04-01TrichloroethyleneMonitoring, RegularBack in compliance
  10. 2024-04-011,2-DichloropropaneMonitoring, RegularBack in compliance
  11. 2024-04-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  12. 2024-04-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  13. 2024-04-011,2-DichloroethaneMonitoring, RegularBack in compliance
  14. 2024-04-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  15. 2024-04-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  16. 2024-04-01Vinyl chlorideMonitoring, RegularBack in compliance
  17. 2024-04-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  18. 2024-04-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  19. 2024-04-01DichloromethaneMonitoring, RegularBack in compliance
  20. 2024-04-01Xylenes, TotalMonitoring, RegularBack in compliance
  21. 2024-04-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  22. 2024-04-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  23. 2024-04-01StyreneMonitoring, RegularPeriod ended · no return to compliance on file
  24. 2024-04-01EthylbenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  25. 2024-04-01TolueneMonitoring, RegularPeriod ended · no return to compliance on file
Show the other 170 entries
  1. 2024-04-01BenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  2. 2024-04-01ChlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  3. 2024-04-01TetrachloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  4. 2024-04-011,1,2-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  5. 2024-04-01TrichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  6. 2024-04-011,2-DichloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  7. 2024-04-01Carbon tetrachlorideMonitoring, RegularPeriod ended · no return to compliance on file
  8. 2024-04-011,1,1-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  9. 2024-04-011,2-DichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  10. 2024-04-01trans-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  11. 2024-04-011,1-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  12. 2024-04-01Vinyl chlorideMonitoring, RegularPeriod ended · no return to compliance on file
  13. 2024-04-01p-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  14. 2024-04-01o-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  15. 2024-04-01DichloromethaneMonitoring, RegularPeriod ended · no return to compliance on file
  16. 2024-04-01Xylenes, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  17. 2024-04-01cis-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  18. 2024-04-011,2,4-TrichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  19. 2024-04-01Radium-228Monitoring, RegularPeriod ended · no return to compliance on file
  20. 2024-04-01Radium-226Monitoring, RegularPeriod ended · no return to compliance on file
  21. 2024-04-01Combined Radium (-226 and -228)Monitoring, RegularPeriod ended · no return to compliance on file
  22. 2024-04-01Combined UraniumMonitoring, RegularPeriod ended · no return to compliance on file
  23. 2024-04-01Gross Alpha, Excl. Radon and UMonitoring, RegularPeriod ended · no return to compliance on file
  24. 2024-01-01ArsenicMonitoring, RegularBack in compliance
  25. 2023-07-01NitrateMonitoring, RegularPeriod ended · no return to compliance on file
  26. 2023-04-01Arsenic ×3Monitoring, RegularBack in compliance
  27. 2023-04-01Nitrate ×4Monitoring, RegularBack in compliance
  28. 2023-01-01StyreneMonitoring, RegularBack in compliance
  29. 2023-01-01EthylbenzeneMonitoring, RegularBack in compliance
  30. 2023-01-01TolueneMonitoring, RegularBack in compliance
  31. 2023-01-01BenzeneMonitoring, RegularBack in compliance
  32. 2023-01-01ChlorobenzeneMonitoring, RegularBack in compliance
  33. 2023-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
  34. 2023-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  35. 2023-01-01TrichloroethyleneMonitoring, RegularBack in compliance
  36. 2023-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
  37. 2023-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  38. 2023-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  39. 2023-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
  40. 2023-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  41. 2023-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  42. 2023-01-01Vinyl chlorideMonitoring, RegularBack in compliance
  43. 2023-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  44. 2023-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  45. 2023-01-01DichloromethaneMonitoring, RegularBack in compliance
  46. 2023-01-01Xylenes, TotalMonitoring, RegularBack in compliance
  47. 2023-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  48. 2023-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  49. 2022-01-01Aroclor 1254Monitoring, RegularBack in compliance
  50. 2022-01-01Aroclor 1016Monitoring, RegularBack in compliance
  51. 2022-01-01Aroclor 1242Monitoring, RegularBack in compliance
  52. 2022-01-01Aroclor 1221Monitoring, RegularBack in compliance
  53. 2022-01-01Aroclor 1260Monitoring, RegularBack in compliance
  54. 2022-01-01Aroclor 1248Monitoring, RegularBack in compliance
  55. 2022-01-01Aroclor 1232Monitoring, RegularBack in compliance
  56. 2022-01-01Radium-228Monitoring, RegularPeriod ended · no return to compliance on file
  57. 2022-01-01Radium-226Monitoring, RegularPeriod ended · no return to compliance on file
  58. 2022-01-01Combined Radium (-226 and -228)Monitoring, RegularPeriod ended · no return to compliance on file
  59. 2022-01-01Combined UraniumMonitoring, RegularPeriod ended · no return to compliance on file
  60. 2022-01-01Gross Alpha, Excl. Radon and UMonitoring, RegularPeriod ended · no return to compliance on file
  61. 2022-01-01StyreneMonitoring, RegularPeriod ended · no return to compliance on file
  62. 2022-01-01EthylbenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  63. 2022-01-01TolueneMonitoring, RegularPeriod ended · no return to compliance on file
  64. 2022-01-01BenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  65. 2022-01-01ChlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  66. 2022-01-01TetrachloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  67. 2022-01-011,1,2-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  68. 2022-01-01TrichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  69. 2022-01-011,2-DichloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  70. 2022-01-01Carbon tetrachlorideMonitoring, RegularPeriod ended · no return to compliance on file
  71. 2022-01-011,1,1-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  72. 2022-01-011,2-DichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  73. 2022-01-01trans-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  74. 2022-01-011,1-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  75. 2022-01-01Vinyl chlorideMonitoring, RegularPeriod ended · no return to compliance on file
  76. 2022-01-01p-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  77. 2022-01-01o-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  78. 2022-01-01DichloromethaneMonitoring, RegularPeriod ended · no return to compliance on file
  79. 2022-01-01Xylenes, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  80. 2022-01-01cis-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  81. 2022-01-011,2,4-TrichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  82. 2019-07-01StyreneMonitoring, RegularPeriod ended · no return to compliance on file
  83. 2019-07-01EthylbenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  84. 2019-07-01TolueneMonitoring, RegularPeriod ended · no return to compliance on file
  85. 2019-07-01BenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  86. 2019-07-01ChlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  87. 2019-07-01TetrachloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  88. 2019-07-011,1,2-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  89. 2019-07-01TrichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  90. 2019-07-011,2-DichloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  91. 2019-07-01Carbon tetrachlorideMonitoring, RegularPeriod ended · no return to compliance on file
  92. 2019-07-011,1,1-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  93. 2019-07-011,2-DichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  94. 2019-07-01trans-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  95. 2019-07-011,1-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  96. 2019-07-01Vinyl chlorideMonitoring, RegularPeriod ended · no return to compliance on file
  97. 2019-07-01p-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  98. 2019-07-01o-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  99. 2019-07-01DichloromethaneMonitoring, RegularPeriod ended · no return to compliance on file
  100. 2019-07-01Xylenes, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  101. 2019-07-01cis-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  102. 2019-07-011,2,4-TrichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  103. 2019-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LBack in compliance
  104. 2018-10-01DalaponMonitoring, RegularBack in compliance
  105. 2018-10-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  106. 2018-01-01Aroclor 1254Monitoring, RegularBack in compliance
  107. 2018-01-01DalaponMonitoring, RegularBack in compliance
  108. 2018-01-01Aroclor 1016Monitoring, RegularBack in compliance
  109. 2018-01-01ChlordaneMonitoring, RegularBack in compliance
  110. 2018-01-01ToxapheneMonitoring, RegularBack in compliance
  111. 2018-01-01Aroclor 1242Monitoring, RegularBack in compliance
  112. 2018-01-01Aroclor 1232Monitoring, RegularBack in compliance
  113. 2018-01-01Aroclor 1248Monitoring, RegularBack in compliance
  114. 2018-01-01Aroclor 1221Monitoring, RegularBack in compliance
  115. 2018-01-01Aroclor 1260Monitoring, RegularBack in compliance
  116. 2018-01-01StyreneMonitoring, RegularBack in compliance
  117. 2018-01-01EthylbenzeneMonitoring, RegularBack in compliance
  118. 2018-01-01TolueneMonitoring, RegularBack in compliance
  119. 2018-01-01BenzeneMonitoring, RegularBack in compliance
  120. 2018-01-01ChlorobenzeneMonitoring, RegularBack in compliance
  121. 2018-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
  122. 2018-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  123. 2018-01-01TrichloroethyleneMonitoring, RegularBack in compliance
  124. 2018-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
  125. 2018-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  126. 2018-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  127. 2018-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
  128. 2018-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  129. 2018-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  130. 2018-01-01Vinyl chlorideMonitoring, RegularBack in compliance
  131. 2018-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  132. 2018-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  133. 2018-01-01DichloromethaneMonitoring, RegularBack in compliance
  134. 2018-01-01Xylenes, TotalMonitoring, RegularBack in compliance
  135. 2018-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  136. 2018-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  137. 2017-07-01Radium-228 ×2Monitoring, RegularBack in compliance
  138. 2017-07-01Radium-226 ×2Monitoring, RegularBack in compliance
  139. 2017-07-01Combined Radium (-226 and -228) ×2Monitoring, RegularBack in compliance
  140. 2017-07-01Combined Uranium ×2Monitoring, RegularBack in compliance
  141. 2017-07-01Gross Alpha, Excl. Radon and U ×2Monitoring, RegularBack in compliance
  142. 2017-07-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  143. 2017-07-01StyreneMonitoring, RegularBack in compliance
  144. 2017-07-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  145. 2017-07-01Xylenes, TotalMonitoring, RegularBack in compliance
  146. 2017-07-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  147. 2017-07-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  148. 2017-07-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  149. 2017-07-011,2-DichloropropaneMonitoring, RegularBack in compliance
  150. 2017-07-01ChlorobenzeneMonitoring, RegularBack in compliance
  151. 2017-07-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  152. 2017-07-011,2-DichloroethaneMonitoring, RegularBack in compliance
  153. 2017-07-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  154. 2017-07-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  155. 2017-07-01TolueneMonitoring, RegularBack in compliance
  156. 2017-07-01EthylbenzeneMonitoring, RegularBack in compliance
  157. 2017-07-01BenzeneMonitoring, RegularBack in compliance
  158. 2017-07-01TrichloroethyleneMonitoring, RegularBack in compliance
  159. 2017-07-01DichloromethaneMonitoring, RegularBack in compliance
  160. 2017-07-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  161. 2017-07-01TetrachloroethyleneMonitoring, RegularBack in compliance
  162. 2017-01-01NitrateMonitoring, RegularBack in compliance
  163. 2015-01-01AsbestosMonitoring, RegularBack in compliance
  164. 2005-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  165. 2005-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  166. 2004-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  167. 2004-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  168. 2003-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  169. 2003-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  170. 2002-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served247,328
Service connections81,165
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityChandler
EPA ZIP on file85244-4008

Areas served

  • Chandler, Maricopa County

Reading this record

Chandler City of is a community water system that draws from surface water and serves about 247,328 people in Chandler, Arizona. 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.