Transient Non-Community · PWSID WY5680211

Btnf-Blackrock Work Center

Serves 50 peopleGroundwaterOwner: FederalJackson, Wyoming
Nothing open right now.

On record since 2016: 345 violations. 3 over the limit · 2 treatment lapses · 337 missed or late tests · 3 notices or reports. Most recent began 2025-05-01.

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

3Over the limit
2Treatment lapse
337Missed or late test
3Notice or report

More violations on record than 99% of active water systems in Wyoming. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2005201020152016 · Missed or late test: 32017 · Missed or late test: 42017 · Notice or report: 12018 · Missed or late test: 22019 · Missed or late test: 120202021 · Missed or late test: 22022 · Treatment lapse: 12022 · Missed or late test: 2572022 · Missed or late test: 2572022 · Missed or late test: 2572022 · Missed or late test: 2572022 · Missed or late test: 2572022 · Missed or late test: 2572022 · Missed or late test: 2572022 · Missed or late test: 2572022 · Missed or late test: 2572022 · Missed or late test: 2572022 · Missed or late test: 2572022 · Missed or late test: 2572022 · Notice or report: 22023 · Over the limit: 32023 · Missed or late test: 652023 · Missed or late test: 652023 · Missed or late test: 652024 · Treatment lapse: 12024 · Missed or late test: 22025 · Missed or late test: 12025
One square ≈ 22 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
<1% over the limit · 3<1% treatment lapse · 298% missed or late test · 337<1% notice or report · 3

How far over the limit

at the limit2×5×10×100×+Ethylene Dibromide2023-10-01 · Ethylene Dibromide: measured 0.001260 MG/L vs limit 0.000050 MG/L (25.2×)2023-07-01 · Ethylene Dibromide: measured 0.001410 MG/L vs limit 0.000050 MG/L (28.2×)2023-04-01 · Ethylene Dibromide: measured 1.80 UG/L vs limit 0.0500 UG/L (36.0×)
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 2 results on file · action level 15 ppb

1.6 ppb
1.4 ppb

Copper, 90th percentile 1 result on file · action level 1.3 mg/L

1.4 mg/L

Every violation on record

  1. 2025-05-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  2. 2024-05-31Revised Total Coliform RuleTTBack in compliance
  3. 2024-03-31Lead and Copper RuleLead Consumer NoticeBack in compliance
  4. 2024-02-01Revised Total Coliform RuleMONBack in compliance
  5. 2023-10-01Ethylene DibromideMCL, Averagemeasured 0.001260 MG/L · limit 0.000050 MG/LBack in compliance
  6. 2023-07-01Ethylene DibromideMCL, Averagemeasured 0.001410 MG/L · limit 0.000050 MG/LPeriod ended · no return to compliance on file
  7. 2023-04-01Ethylene DibromideMCL, Averagemeasured 1.80 UG/L · limit 0.0500 UG/LPeriod ended · no return to compliance on file
  8. 2023-01-01ChlordaneMonitoring, RegularPeriod ended · no return to compliance on file
  9. 2023-01-01Ethylene DibromideMonitoring, RegularPeriod ended · no return to compliance on file
  10. 2023-01-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  11. 2023-01-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularPeriod ended · no return to compliance on file
  12. 2023-01-01PentachlorophenolMonitoring, RegularPeriod ended · no return to compliance on file
  13. 2023-01-01Benzo(a)pyreneMonitoring, RegularPeriod ended · no return to compliance on file
  14. 2023-01-01HexachlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  15. 2023-01-012, 4, 5-TpMonitoring, RegularPeriod ended · no return to compliance on file
  16. 2023-01-012, 4-DMonitoring, RegularPeriod ended · no return to compliance on file
  17. 2023-01-01Heptachlor epoxideMonitoring, RegularPeriod ended · no return to compliance on file
  18. 2023-01-01HeptachlorMonitoring, RegularPeriod ended · no return to compliance on file
  19. 2023-01-01LassoMonitoring, RegularPeriod ended · no return to compliance on file
  20. 2023-01-01AtrazineMonitoring, RegularPeriod ended · no return to compliance on file
  21. 2023-01-01CarbofuranMonitoring, RegularPeriod ended · no return to compliance on file
  22. 2023-01-01HexachlorocyclopentadieneMonitoring, RegularPeriod ended · no return to compliance on file
  23. 2023-01-01DinosebMonitoring, RegularPeriod ended · no return to compliance on file
  24. 2023-01-01PicloramMonitoring, RegularPeriod ended · no return to compliance on file
  25. 2023-01-01Di(2-ethylhexyl) phthalateMonitoring, RegularPeriod ended · no return to compliance on file
Show the other 320 entries
  1. 2023-01-01SimazineMonitoring, RegularPeriod ended · no return to compliance on file
  2. 2023-01-01OxamylMonitoring, RegularPeriod ended · no return to compliance on file
  3. 2023-01-01Di(2-ethylhexyl) adipateMonitoring, RegularPeriod ended · no return to compliance on file
  4. 2023-01-01GlyphosateMonitoring, RegularPeriod ended · no return to compliance on file
  5. 2023-01-01EndothallMonitoring, RegularPeriod ended · no return to compliance on file
  6. 2023-01-01DiquatMonitoring, RegularPeriod ended · no return to compliance on file
  7. 2023-01-01DalaponMonitoring, RegularPeriod ended · no return to compliance on file
  8. 2023-01-01ToxapheneMonitoring, RegularPeriod ended · no return to compliance on file
  9. 2023-01-01MethoxychlorMonitoring, RegularPeriod ended · no return to compliance on file
  10. 2023-01-01Bhc-GammaMonitoring, RegularPeriod ended · no return to compliance on file
  11. 2023-01-01EndrinMonitoring, RegularPeriod ended · no return to compliance on file
  12. 2023-01-01StyreneMonitoring, RegularPeriod ended · no return to compliance on file
  13. 2023-01-01EthylbenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  14. 2023-01-01TolueneMonitoring, RegularPeriod ended · no return to compliance on file
  15. 2023-01-01BenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  16. 2023-01-01ChlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  17. 2023-01-01TetrachloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  18. 2023-01-011,1,2-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  19. 2023-01-01TrichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  20. 2023-01-011,2-DichloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  21. 2023-01-01Carbon tetrachlorideMonitoring, RegularPeriod ended · no return to compliance on file
  22. 2023-01-011,1,1-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  23. 2023-01-011,2-DichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  24. 2023-01-01trans-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  25. 2023-01-011,1-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  26. 2023-01-01Vinyl chlorideMonitoring, RegularPeriod ended · no return to compliance on file
  27. 2023-01-01p-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  28. 2023-01-01o-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  29. 2023-01-01DichloromethaneMonitoring, RegularPeriod ended · no return to compliance on file
  30. 2023-01-01Xylenes, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  31. 2023-01-01cis-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  32. 2023-01-011,2,4-TrichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  33. 2023-01-01SeleniumMonitoring, RegularPeriod ended · no return to compliance on file
  34. 2023-01-01Thallium, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  35. 2023-01-01Beryllium, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  36. 2023-01-01Antimony, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  37. 2023-01-01SodiumMonitoring, RegularPeriod ended · no return to compliance on file
  38. 2023-01-01NickelMonitoring, RegularPeriod ended · no return to compliance on file
  39. 2023-01-01MercuryMonitoring, RegularPeriod ended · no return to compliance on file
  40. 2023-01-01FluorideMonitoring, RegularPeriod ended · no return to compliance on file
  41. 2023-01-01CyanideMonitoring, RegularPeriod ended · no return to compliance on file
  42. 2023-01-01ChromiumMonitoring, RegularPeriod ended · no return to compliance on file
  43. 2023-01-01CadmiumMonitoring, RegularPeriod ended · no return to compliance on file
  44. 2023-01-01BariumMonitoring, RegularPeriod ended · no return to compliance on file
  45. 2023-01-01ArsenicMonitoring, RegularPeriod ended · no return to compliance on file
  46. 2023-01-01AsbestosMonitoring, RegularPeriod ended · no return to compliance on file
  47. 2023-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  48. 2022-10-01CarbofuranMonitoring, RegularPeriod ended · no return to compliance on file
  49. 2022-10-01Di(2-ethylhexyl) adipateMonitoring, RegularPeriod ended · no return to compliance on file
  50. 2022-10-01Bhc-GammaMonitoring, RegularPeriod ended · no return to compliance on file
  51. 2022-10-01DiquatMonitoring, RegularPeriod ended · no return to compliance on file
  52. 2022-10-01EndothallMonitoring, RegularPeriod ended · no return to compliance on file
  53. 2022-10-01Di(2-ethylhexyl) phthalateMonitoring, RegularPeriod ended · no return to compliance on file
  54. 2022-10-01PicloramMonitoring, RegularPeriod ended · no return to compliance on file
  55. 2022-10-01HexachlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  56. 2022-10-01OxamylMonitoring, RegularPeriod ended · no return to compliance on file
  57. 2022-10-01LassoMonitoring, RegularPeriod ended · no return to compliance on file
  58. 2022-10-012, 4-DMonitoring, RegularPeriod ended · no return to compliance on file
  59. 2022-10-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  60. 2022-10-01ToxapheneMonitoring, RegularPeriod ended · no return to compliance on file
  61. 2022-10-01AtrazineMonitoring, RegularPeriod ended · no return to compliance on file
  62. 2022-10-01Heptachlor epoxideMonitoring, RegularPeriod ended · no return to compliance on file
  63. 2022-10-01MethoxychlorMonitoring, RegularPeriod ended · no return to compliance on file
  64. 2022-10-01GlyphosateMonitoring, RegularPeriod ended · no return to compliance on file
  65. 2022-10-01DinosebMonitoring, RegularPeriod ended · no return to compliance on file
  66. 2022-10-01Benzo(a)pyreneMonitoring, RegularPeriod ended · no return to compliance on file
  67. 2022-10-01DalaponMonitoring, RegularPeriod ended · no return to compliance on file
  68. 2022-10-01HexachlorocyclopentadieneMonitoring, RegularPeriod ended · no return to compliance on file
  69. 2022-10-01SimazineMonitoring, RegularPeriod ended · no return to compliance on file
  70. 2022-10-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularPeriod ended · no return to compliance on file
  71. 2022-10-01HeptachlorMonitoring, RegularPeriod ended · no return to compliance on file
  72. 2022-10-01ChlordaneMonitoring, RegularPeriod ended · no return to compliance on file
  73. 2022-10-01EndrinMonitoring, RegularPeriod ended · no return to compliance on file
  74. 2022-10-012, 4, 5-TpMonitoring, RegularPeriod ended · no return to compliance on file
  75. 2022-10-01PentachlorophenolMonitoring, RegularPeriod ended · no return to compliance on file
  76. 2022-10-01Ethylene DibromideMonitoring, RegularPeriod ended · no return to compliance on file
  77. 2022-10-01ChromiumMonitoring, RegularPeriod ended · no return to compliance on file
  78. 2022-10-01NickelMonitoring, RegularPeriod ended · no return to compliance on file
  79. 2022-10-01BariumMonitoring, RegularPeriod ended · no return to compliance on file
  80. 2022-10-01FluorideMonitoring, RegularPeriod ended · no return to compliance on file
  81. 2022-10-01SodiumMonitoring, RegularPeriod ended · no return to compliance on file
  82. 2022-10-01CyanideMonitoring, RegularPeriod ended · no return to compliance on file
  83. 2022-10-01Beryllium, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  84. 2022-10-01Thallium, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  85. 2022-10-01ArsenicMonitoring, RegularPeriod ended · no return to compliance on file
  86. 2022-10-01CadmiumMonitoring, RegularPeriod ended · no return to compliance on file
  87. 2022-10-01SeleniumMonitoring, RegularPeriod ended · no return to compliance on file
  88. 2022-10-01Antimony, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  89. 2022-10-01MercuryMonitoring, RegularPeriod ended · no return to compliance on file
  90. 2022-10-01StyreneMonitoring, RegularPeriod ended · no return to compliance on file
  91. 2022-10-01EthylbenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  92. 2022-10-01TolueneMonitoring, RegularPeriod ended · no return to compliance on file
  93. 2022-10-01BenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  94. 2022-10-01ChlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  95. 2022-10-01TetrachloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  96. 2022-10-011,1,2-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  97. 2022-10-01TrichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  98. 2022-10-011,2-DichloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  99. 2022-10-01Carbon tetrachlorideMonitoring, RegularPeriod ended · no return to compliance on file
  100. 2022-10-011,1,1-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  101. 2022-10-011,2-DichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  102. 2022-10-01trans-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  103. 2022-10-011,1-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  104. 2022-10-01Vinyl chlorideMonitoring, RegularPeriod ended · no return to compliance on file
  105. 2022-10-01p-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  106. 2022-10-01o-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  107. 2022-10-01DichloromethaneMonitoring, RegularPeriod ended · no return to compliance on file
  108. 2022-10-01Xylenes, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  109. 2022-10-01cis-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  110. 2022-10-011,2,4-TrichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  111. 2022-10-01AsbestosMonitoring, RegularPeriod ended · no return to compliance on file
  112. 2022-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  113. 2022-07-01CarbofuranMonitoring, RegularBack in compliance
  114. 2022-07-01Di(2-ethylhexyl) adipateMonitoring, RegularBack in compliance
  115. 2022-07-01Bhc-GammaMonitoring, RegularBack in compliance
  116. 2022-07-01DiquatMonitoring, RegularBack in compliance
  117. 2022-07-01EndothallMonitoring, RegularBack in compliance
  118. 2022-07-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  119. 2022-07-01PicloramMonitoring, RegularBack in compliance
  120. 2022-07-01HexachlorobenzeneMonitoring, RegularBack in compliance
  121. 2022-07-01OxamylMonitoring, RegularBack in compliance
  122. 2022-07-01LassoMonitoring, RegularBack in compliance
  123. 2022-07-012, 4-DMonitoring, RegularBack in compliance
  124. 2022-07-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularBack in compliance
  125. 2022-07-01ToxapheneMonitoring, RegularBack in compliance
  126. 2022-07-01AtrazineMonitoring, RegularBack in compliance
  127. 2022-07-01Heptachlor epoxideMonitoring, RegularBack in compliance
  128. 2022-07-01MethoxychlorMonitoring, RegularBack in compliance
  129. 2022-07-01GlyphosateMonitoring, RegularBack in compliance
  130. 2022-07-01DinosebMonitoring, RegularBack in compliance
  131. 2022-07-01Benzo(a)pyreneMonitoring, RegularBack in compliance
  132. 2022-07-01DalaponMonitoring, RegularBack in compliance
  133. 2022-07-01HexachlorocyclopentadieneMonitoring, RegularBack in compliance
  134. 2022-07-01SimazineMonitoring, RegularBack in compliance
  135. 2022-07-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularBack in compliance
  136. 2022-07-01HeptachlorMonitoring, RegularBack in compliance
  137. 2022-07-01ChlordaneMonitoring, RegularBack in compliance
  138. 2022-07-01EndrinMonitoring, RegularBack in compliance
  139. 2022-07-012, 4, 5-TpMonitoring, RegularBack in compliance
  140. 2022-07-01PentachlorophenolMonitoring, RegularBack in compliance
  141. 2022-07-01Ethylene DibromideMonitoring, RegularBack in compliance
  142. 2022-07-01StyreneMonitoring, RegularBack in compliance
  143. 2022-07-01EthylbenzeneMonitoring, RegularBack in compliance
  144. 2022-07-01TolueneMonitoring, RegularBack in compliance
  145. 2022-07-01BenzeneMonitoring, RegularBack in compliance
  146. 2022-07-01ChlorobenzeneMonitoring, RegularBack in compliance
  147. 2022-07-01TetrachloroethyleneMonitoring, RegularBack in compliance
  148. 2022-07-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  149. 2022-07-01TrichloroethyleneMonitoring, RegularBack in compliance
  150. 2022-07-011,2-DichloropropaneMonitoring, RegularBack in compliance
  151. 2022-07-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  152. 2022-07-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  153. 2022-07-011,2-DichloroethaneMonitoring, RegularBack in compliance
  154. 2022-07-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  155. 2022-07-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  156. 2022-07-01Vinyl chlorideMonitoring, RegularBack in compliance
  157. 2022-07-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  158. 2022-07-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  159. 2022-07-01DichloromethaneMonitoring, RegularBack in compliance
  160. 2022-07-01Xylenes, TotalMonitoring, RegularBack in compliance
  161. 2022-07-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  162. 2022-07-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  163. 2022-07-01ChromiumMonitoring, RegularBack in compliance
  164. 2022-07-01NickelMonitoring, RegularBack in compliance
  165. 2022-07-01BariumMonitoring, RegularBack in compliance
  166. 2022-07-01FluorideMonitoring, RegularBack in compliance
  167. 2022-07-01SodiumMonitoring, RegularBack in compliance
  168. 2022-07-01CyanideMonitoring, RegularBack in compliance
  169. 2022-07-01Beryllium, TotalMonitoring, RegularBack in compliance
  170. 2022-07-01Thallium, TotalMonitoring, RegularBack in compliance
  171. 2022-07-01ArsenicMonitoring, RegularBack in compliance
  172. 2022-07-01CadmiumMonitoring, RegularBack in compliance
  173. 2022-07-01SeleniumMonitoring, RegularBack in compliance
  174. 2022-07-01Antimony, TotalMonitoring, RegularBack in compliance
  175. 2022-07-01MercuryMonitoring, RegularBack in compliance
  176. 2022-07-01AsbestosMonitoring, RegularBack in compliance
  177. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  178. 2022-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  179. 2022-04-01CarbofuranMonitoring, RegularBack in compliance
  180. 2022-04-01LassoMonitoring, RegularBack in compliance
  181. 2022-04-01HeptachlorMonitoring, RegularBack in compliance
  182. 2022-04-01ChlordaneMonitoring, RegularBack in compliance
  183. 2022-04-01EndrinMonitoring, RegularBack in compliance
  184. 2022-04-01DiquatMonitoring, RegularBack in compliance
  185. 2022-04-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  186. 2022-04-01Benzo(a)pyreneMonitoring, RegularBack in compliance
  187. 2022-04-01EndothallMonitoring, RegularBack in compliance
  188. 2022-04-01OxamylMonitoring, RegularBack in compliance
  189. 2022-04-01HexachlorobenzeneMonitoring, RegularBack in compliance
  190. 2022-04-01DalaponMonitoring, RegularBack in compliance
  191. 2022-04-01MethoxychlorMonitoring, RegularBack in compliance
  192. 2022-04-01GlyphosateMonitoring, RegularBack in compliance
  193. 2022-04-01PicloramMonitoring, RegularBack in compliance
  194. 2022-04-01AtrazineMonitoring, RegularBack in compliance
  195. 2022-04-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularBack in compliance
  196. 2022-04-01Di(2-ethylhexyl) adipateMonitoring, RegularBack in compliance
  197. 2022-04-01HexachlorocyclopentadieneMonitoring, RegularBack in compliance
  198. 2022-04-012, 4, 5-TpMonitoring, RegularBack in compliance
  199. 2022-04-01Bhc-GammaMonitoring, RegularBack in compliance
  200. 2022-04-01Heptachlor epoxideMonitoring, RegularBack in compliance
  201. 2022-04-012, 4-DMonitoring, RegularBack in compliance
  202. 2022-04-01PentachlorophenolMonitoring, RegularBack in compliance
  203. 2022-04-01ToxapheneMonitoring, RegularBack in compliance
  204. 2022-04-01SimazineMonitoring, RegularBack in compliance
  205. 2022-04-01DinosebMonitoring, RegularBack in compliance
  206. 2022-04-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularBack in compliance
  207. 2022-04-01Ethylene DibromideMonitoring, RegularBack in compliance
  208. 2022-04-01ArsenicMonitoring, RegularBack in compliance
  209. 2022-04-01BariumMonitoring, RegularBack in compliance
  210. 2022-04-01MercuryMonitoring, RegularBack in compliance
  211. 2022-04-01NickelMonitoring, RegularBack in compliance
  212. 2022-04-01SeleniumMonitoring, RegularBack in compliance
  213. 2022-04-01Beryllium, TotalMonitoring, RegularBack in compliance
  214. 2022-04-01Thallium, TotalMonitoring, RegularBack in compliance
  215. 2022-04-01FluorideMonitoring, RegularBack in compliance
  216. 2022-04-01CadmiumMonitoring, RegularBack in compliance
  217. 2022-04-01ChromiumMonitoring, RegularBack in compliance
  218. 2022-04-01SodiumMonitoring, RegularBack in compliance
  219. 2022-04-01Antimony, TotalMonitoring, RegularBack in compliance
  220. 2022-04-01CyanideMonitoring, RegularBack in compliance
  221. 2022-04-01StyreneMonitoring, RegularBack in compliance
  222. 2022-04-01EthylbenzeneMonitoring, RegularBack in compliance
  223. 2022-04-01TolueneMonitoring, RegularBack in compliance
  224. 2022-04-01BenzeneMonitoring, RegularBack in compliance
  225. 2022-04-01ChlorobenzeneMonitoring, RegularBack in compliance
  226. 2022-04-01TetrachloroethyleneMonitoring, RegularBack in compliance
  227. 2022-04-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  228. 2022-04-01TrichloroethyleneMonitoring, RegularBack in compliance
  229. 2022-04-011,2-DichloropropaneMonitoring, RegularBack in compliance
  230. 2022-04-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  231. 2022-04-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  232. 2022-04-011,2-DichloroethaneMonitoring, RegularBack in compliance
  233. 2022-04-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  234. 2022-04-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  235. 2022-04-01Vinyl chlorideMonitoring, RegularBack in compliance
  236. 2022-04-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  237. 2022-04-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  238. 2022-04-01DichloromethaneMonitoring, RegularBack in compliance
  239. 2022-04-01Xylenes, TotalMonitoring, RegularBack in compliance
  240. 2022-04-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  241. 2022-04-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  242. 2022-04-01AsbestosMonitoring, RegularBack in compliance
  243. 2022-01-07Groundwater RuleFailure To Address DeficiencyBack in compliance
  244. 2022-01-01CarbofuranMonitoring, RegularPeriod ended · no return to compliance on file
  245. 2022-01-01LassoMonitoring, RegularPeriod ended · no return to compliance on file
  246. 2022-01-01HeptachlorMonitoring, RegularPeriod ended · no return to compliance on file
  247. 2022-01-01ChlordaneMonitoring, RegularPeriod ended · no return to compliance on file
  248. 2022-01-01EndrinMonitoring, RegularPeriod ended · no return to compliance on file
  249. 2022-01-01DiquatMonitoring, RegularPeriod ended · no return to compliance on file
  250. 2022-01-01Di(2-ethylhexyl) phthalateMonitoring, RegularPeriod ended · no return to compliance on file
  251. 2022-01-01Benzo(a)pyreneMonitoring, RegularPeriod ended · no return to compliance on file
  252. 2022-01-01EndothallMonitoring, RegularPeriod ended · no return to compliance on file
  253. 2022-01-01OxamylMonitoring, RegularPeriod ended · no return to compliance on file
  254. 2022-01-01HexachlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  255. 2022-01-01DalaponMonitoring, RegularPeriod ended · no return to compliance on file
  256. 2022-01-01MethoxychlorMonitoring, RegularPeriod ended · no return to compliance on file
  257. 2022-01-01GlyphosateMonitoring, RegularPeriod ended · no return to compliance on file
  258. 2022-01-01PicloramMonitoring, RegularPeriod ended · no return to compliance on file
  259. 2022-01-01AtrazineMonitoring, RegularPeriod ended · no return to compliance on file
  260. 2022-01-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularPeriod ended · no return to compliance on file
  261. 2022-01-01Di(2-ethylhexyl) adipateMonitoring, RegularPeriod ended · no return to compliance on file
  262. 2022-01-01HexachlorocyclopentadieneMonitoring, RegularPeriod ended · no return to compliance on file
  263. 2022-01-012, 4, 5-TpMonitoring, RegularPeriod ended · no return to compliance on file
  264. 2022-01-01Bhc-GammaMonitoring, RegularPeriod ended · no return to compliance on file
  265. 2022-01-01Heptachlor epoxideMonitoring, RegularPeriod ended · no return to compliance on file
  266. 2022-01-012, 4-DMonitoring, RegularPeriod ended · no return to compliance on file
  267. 2022-01-01PentachlorophenolMonitoring, RegularPeriod ended · no return to compliance on file
  268. 2022-01-01ToxapheneMonitoring, RegularPeriod ended · no return to compliance on file
  269. 2022-01-01SimazineMonitoring, RegularPeriod ended · no return to compliance on file
  270. 2022-01-01DinosebMonitoring, RegularPeriod ended · no return to compliance on file
  271. 2022-01-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  272. 2022-01-01Ethylene DibromideMonitoring, RegularPeriod ended · no return to compliance on file
  273. 2022-01-01StyreneMonitoring, RegularPeriod ended · no return to compliance on file
  274. 2022-01-01EthylbenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  275. 2022-01-01TolueneMonitoring, RegularPeriod ended · no return to compliance on file
  276. 2022-01-01BenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  277. 2022-01-01ChlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  278. 2022-01-01TetrachloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  279. 2022-01-011,1,2-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  280. 2022-01-01TrichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  281. 2022-01-011,2-DichloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  282. 2022-01-01Carbon tetrachlorideMonitoring, RegularPeriod ended · no return to compliance on file
  283. 2022-01-011,1,1-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  284. 2022-01-011,2-DichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  285. 2022-01-01trans-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  286. 2022-01-011,1-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  287. 2022-01-01Vinyl chlorideMonitoring, RegularPeriod ended · no return to compliance on file
  288. 2022-01-01p-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  289. 2022-01-01o-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  290. 2022-01-01DichloromethaneMonitoring, RegularPeriod ended · no return to compliance on file
  291. 2022-01-01Xylenes, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  292. 2022-01-01cis-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  293. 2022-01-011,2,4-TrichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  294. 2022-01-01ArsenicMonitoring, RegularPeriod ended · no return to compliance on file
  295. 2022-01-01BariumMonitoring, RegularPeriod ended · no return to compliance on file
  296. 2022-01-01MercuryMonitoring, RegularPeriod ended · no return to compliance on file
  297. 2022-01-01NickelMonitoring, RegularPeriod ended · no return to compliance on file
  298. 2022-01-01SeleniumMonitoring, RegularPeriod ended · no return to compliance on file
  299. 2022-01-01Beryllium, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  300. 2022-01-01Thallium, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  301. 2022-01-01FluorideMonitoring, RegularPeriod ended · no return to compliance on file
  302. 2022-01-01CadmiumMonitoring, RegularPeriod ended · no return to compliance on file
  303. 2022-01-01ChromiumMonitoring, RegularPeriod ended · no return to compliance on file
  304. 2022-01-01SodiumMonitoring, RegularPeriod ended · no return to compliance on file
  305. 2022-01-01Antimony, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  306. 2022-01-01CyanideMonitoring, RegularPeriod ended · no return to compliance on file
  307. 2022-01-01AsbestosMonitoring, RegularPeriod ended · no return to compliance on file
  308. 2021-09-01Revised Total Coliform RuleMONBack in compliance
  309. 2021-01-01Nitrate-NitriteMonitoring, RegularBack in compliance
  310. 2019-01-01Nitrate-NitriteMonitoring, RegularBack in compliance
  311. 2018-01-01Nitrate-NitriteMonitoring, RegularBack in compliance
  312. 2018-01-01Revised Total Coliform RuleMONBack in compliance
  313. 2017-11-22Revised Total Coliform RuleOtherBack in compliance
  314. 2017-11-21E. ColiMonitoring, Source Water (GWR)Back in compliance
  315. 2017-10-01Revised Total Coliform RuleMONBack in compliance
  316. 2017-08-01Revised Total Coliform RuleMONBack in compliance
  317. 2017-01-01Nitrate-NitriteMonitoring, RegularBack in compliance
  318. 2016-09-01Revised Total Coliform RuleMONBack in compliance
  319. 2016-06-01Revised Total Coliform RuleMONBack in compliance
  320. 2016-04-01Revised Total Coliform RuleMONBack in compliance

System details

Population served50
Service connections19
Water sourceGroundwater
System typeTransient Non-Community
OwnerFederal
StatusActive
CityJackson
EPA ZIP on file83001

Areas served

  • Moran JCT, Teton County

Reading this record

Btnf-Blackrock Work Center is a transient non-community that draws from groundwater and serves about 50 people in Jackson, Wyoming. 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.