Community Water System · PWSID UTAH27006

Hildale - Colorado City

Serves 6,100 peopleGroundwaterOwner: Local GovernmentHildale, Utah
Nothing open that measures the water, but 2 open testing or paperwork violations.

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 2000: 232 violations. 2 over the limit · 1 treatment lapse · 226 missed or late tests · 3 notices or reports. Most recent began 2025-06-04.

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

2Over the limit
1Treatment lapse
226Missed or late test2 open
3Notice or report

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

The record, year by year

2000 · Missed or late test: 1200020052008 · Missed or late test: 12010 · Missed or late test: 120102011 · Missed or late test: 12014 · Missed or late test: 12014 · Notice or report: 12015 · Over the limit: 12015 · Missed or late test: 52015 · Notice or report: 120152016 · Missed or late test: 1152016 · Missed or late test: 1152016 · Missed or late test: 1152016 · Missed or late test: 1152016 · Missed or late test: 1152016 · Missed or late test: 1152016 · Missed or late test: 1152016 · Missed or late test: 1152016 · Missed or late test: 1152016 · Missed or late test: 1152016 · Missed or late test: 1152016 · Missed or late test: 1152017 · Treatment lapse: 12017 · Missed or late test: 392017 · Missed or late test: 392017 · Missed or late test: 392017 · Missed or late test: 392017 · Notice or report: 12018 · Missed or late test: 562018 · Missed or late test: 562018 · Missed or late test: 562018 · Missed or late test: 562018 · Missed or late test: 562018 · Missed or late test: 562019 · Over the limit: 12019 · Missed or late test: 120202024 · Missed or late test: 32025 · Missed or late test: 22025
One square ≈ 10 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
<1% over the limit · 2<1% treatment lapse · 197% missed or late test · 2261% notice or report · 3

Across Utah, 81% of violations are missed or late tests and 2% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Radium-2282019-01-01 · Radium-228: measured 9.40 PCI/L vs limit 5.00 PCI/L (1.9×)
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

4.2 ppb
3.7 ppb
1 ppb

Open now (2)

  1. 2025-06-04E. ColiMonitoring, Source Water (GWR)Open
  2. 2024-07-25E. ColiMonitoring, Source Water (GWR)Open

Every violation on record

  1. 2025-06-04E. ColiMonitoring, Source Water (GWR)Open
  2. 2025-05-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  3. 2024-07-25E. ColiMonitoring, Source Water (GWR)Open
  4. 2024-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  5. 2024-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  6. 2019-05-30E. ColiMonitoring, Source Water (GWR)Back in compliance
  7. 2019-01-01Radium-228MCL, Averagemeasured 9.40 PCI/L · limit 5.00 PCI/LBack in compliance
  8. 2018-07-01ChlordaneMonitoring, RegularBack in compliance
  9. 2018-07-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularBack in compliance
  10. 2018-07-01PentachlorophenolMonitoring, RegularBack in compliance
  11. 2018-07-01Benzo(a)pyreneMonitoring, RegularBack in compliance
  12. 2018-07-01HexachlorobenzeneMonitoring, RegularBack in compliance
  13. 2018-07-012, 4, 5-TpMonitoring, RegularBack in compliance
  14. 2018-07-012, 4-DMonitoring, RegularBack in compliance
  15. 2018-07-01Heptachlor epoxideMonitoring, RegularBack in compliance
  16. 2018-07-01HeptachlorMonitoring, RegularBack in compliance
  17. 2018-07-01LassoMonitoring, RegularBack in compliance
  18. 2018-07-01AtrazineMonitoring, RegularBack in compliance
  19. 2018-07-01CarbofuranMonitoring, RegularBack in compliance
  20. 2018-07-01HexachlorocyclopentadieneMonitoring, RegularBack in compliance
  21. 2018-07-01DinosebMonitoring, RegularBack in compliance
  22. 2018-07-01PicloramMonitoring, RegularBack in compliance
  23. 2018-07-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  24. 2018-07-01SimazineMonitoring, RegularBack in compliance
  25. 2018-07-01OxamylMonitoring, RegularBack in compliance
Show the other 162 entries
  1. 2018-07-01Di(2-ethylhexyl) adipateMonitoring, RegularBack in compliance
  2. 2018-07-01DalaponMonitoring, RegularBack in compliance
  3. 2018-07-01ToxapheneMonitoring, RegularBack in compliance
  4. 2018-07-01MethoxychlorMonitoring, RegularBack in compliance
  5. 2018-07-01Bhc-GammaMonitoring, RegularBack in compliance
  6. 2018-07-01EndrinMonitoring, RegularBack in compliance
  7. 2018-07-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  8. 2018-07-01Radium-228Monitoring, RegularBack in compliance
  9. 2018-07-01Radium-226Monitoring, RegularBack in compliance
  10. 2018-07-01Revised Total Coliform RuleMONBack in compliance
  11. 2018-01-01NitrateMonitoring, RegularBack in compliance
  12. 2018-01-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  13. 2018-01-01Radium-228Monitoring, RegularBack in compliance
  14. 2018-01-01Radium-226Monitoring, RegularBack in compliance
  15. 2018-01-01ChlordaneMonitoring, RegularBack in compliance
  16. 2018-01-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularBack in compliance
  17. 2018-01-01PentachlorophenolMonitoring, RegularBack in compliance
  18. 2018-01-01Benzo(a)pyreneMonitoring, RegularBack in compliance
  19. 2018-01-01HexachlorobenzeneMonitoring, RegularBack in compliance
  20. 2018-01-012, 4, 5-TpMonitoring, RegularBack in compliance
  21. 2018-01-012, 4-DMonitoring, RegularBack in compliance
  22. 2018-01-01Heptachlor epoxideMonitoring, RegularBack in compliance
  23. 2018-01-01HeptachlorMonitoring, RegularBack in compliance
  24. 2018-01-01LassoMonitoring, RegularBack in compliance
  25. 2018-01-01AtrazineMonitoring, RegularBack in compliance
  26. 2018-01-01CarbofuranMonitoring, RegularBack in compliance
  27. 2018-01-01HexachlorocyclopentadieneMonitoring, RegularBack in compliance
  28. 2018-01-01DinosebMonitoring, RegularBack in compliance
  29. 2018-01-01PicloramMonitoring, RegularBack in compliance
  30. 2018-01-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  31. 2018-01-01SimazineMonitoring, RegularBack in compliance
  32. 2018-01-01OxamylMonitoring, RegularBack in compliance
  33. 2018-01-01Di(2-ethylhexyl) adipateMonitoring, RegularBack in compliance
  34. 2018-01-01DalaponMonitoring, RegularBack in compliance
  35. 2018-01-01ToxapheneMonitoring, RegularBack in compliance
  36. 2018-01-01MethoxychlorMonitoring, RegularBack in compliance
  37. 2018-01-01Bhc-GammaMonitoring, RegularBack in compliance
  38. 2018-01-01EndrinMonitoring, RegularBack in compliance
  39. 2017-10-01Radium-226Monitoring, RegularBack in compliance
  40. 2017-10-01Radium-228Monitoring, RegularBack in compliance
  41. 2017-10-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  42. 2017-10-01Revised Total Coliform RuleOtherBack in compliance
  43. 2017-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  44. 2017-08-20Revised Total Coliform RuleTTBack in compliance
  45. 2017-08-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  46. 2017-08-01Revised Total Coliform RuleMONBack in compliance
  47. 2017-07-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  48. 2017-07-01ChlordaneMonitoring, RegularBack in compliance
  49. 2017-07-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularBack in compliance
  50. 2017-07-01PentachlorophenolMonitoring, RegularBack in compliance
  51. 2017-07-01Benzo(a)pyreneMonitoring, RegularBack in compliance
  52. 2017-07-01HexachlorobenzeneMonitoring, RegularBack in compliance
  53. 2017-07-012, 4, 5-TpMonitoring, RegularBack in compliance
  54. 2017-07-012, 4-DMonitoring, RegularBack in compliance
  55. 2017-07-01Heptachlor epoxideMonitoring, RegularBack in compliance
  56. 2017-07-01HeptachlorMonitoring, RegularBack in compliance
  57. 2017-07-01LassoMonitoring, RegularBack in compliance
  58. 2017-07-01AtrazineMonitoring, RegularBack in compliance
  59. 2017-07-01CarbofuranMonitoring, RegularBack in compliance
  60. 2017-07-01HexachlorocyclopentadieneMonitoring, RegularBack in compliance
  61. 2017-07-01DinosebMonitoring, RegularBack in compliance
  62. 2017-07-01PicloramMonitoring, RegularBack in compliance
  63. 2017-07-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  64. 2017-07-01SimazineMonitoring, RegularBack in compliance
  65. 2017-07-01OxamylMonitoring, RegularBack in compliance
  66. 2017-07-01Di(2-ethylhexyl) adipateMonitoring, RegularBack in compliance
  67. 2017-07-01DalaponMonitoring, RegularBack in compliance
  68. 2017-07-01ToxapheneMonitoring, RegularBack in compliance
  69. 2017-07-01MethoxychlorMonitoring, RegularBack in compliance
  70. 2017-07-01Bhc-GammaMonitoring, RegularBack in compliance
  71. 2017-07-01EndrinMonitoring, RegularBack in compliance
  72. 2017-06-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  73. 2017-05-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  74. 2017-04-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  75. 2017-04-01Radium-228Monitoring, RegularBack in compliance
  76. 2017-04-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  77. 2017-03-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  78. 2017-02-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  79. 2017-01-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  80. 2016-07-01ChlordaneMonitoring, RegularBack in compliance
  81. 2016-07-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularBack in compliance
  82. 2016-07-01PentachlorophenolMonitoring, RegularBack in compliance
  83. 2016-07-01Benzo(a)pyreneMonitoring, RegularBack in compliance
  84. 2016-07-01HexachlorobenzeneMonitoring, RegularBack in compliance
  85. 2016-07-012, 4, 5-TpMonitoring, RegularBack in compliance
  86. 2016-07-012, 4-DMonitoring, RegularBack in compliance
  87. 2016-07-01Heptachlor epoxideMonitoring, RegularBack in compliance
  88. 2016-07-01HeptachlorMonitoring, RegularBack in compliance
  89. 2016-07-01LassoMonitoring, RegularBack in compliance
  90. 2016-07-01AtrazineMonitoring, RegularBack in compliance
  91. 2016-07-01CarbofuranMonitoring, RegularBack in compliance
  92. 2016-07-01HexachlorocyclopentadieneMonitoring, RegularBack in compliance
  93. 2016-07-01DinosebMonitoring, RegularBack in compliance
  94. 2016-07-01PicloramMonitoring, RegularBack in compliance
  95. 2016-07-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  96. 2016-07-01SimazineMonitoring, RegularBack in compliance
  97. 2016-07-01OxamylMonitoring, RegularBack in compliance
  98. 2016-07-01Di(2-ethylhexyl) adipateMonitoring, RegularBack in compliance
  99. 2016-07-01DalaponMonitoring, RegularBack in compliance
  100. 2016-07-01ToxapheneMonitoring, RegularBack in compliance
  101. 2016-07-01MethoxychlorMonitoring, RegularBack in compliance
  102. 2016-07-01Bhc-GammaMonitoring, RegularBack in compliance
  103. 2016-07-01EndrinMonitoring, RegularBack in compliance
  104. 2016-05-01Revised Total Coliform RuleMONBack in compliance
  105. 2016-04-01Chlordane ×2Monitoring, RegularBack in compliance
  106. 2016-04-01Total Polychlorinated Biphenyls (PCB) ×2Monitoring, RegularBack in compliance
  107. 2016-04-01Pentachlorophenol ×2Monitoring, RegularBack in compliance
  108. 2016-04-01Benzo(a)pyrene ×2Monitoring, RegularBack in compliance
  109. 2016-04-01Hexachlorobenzene ×2Monitoring, RegularBack in compliance
  110. 2016-04-012, 4, 5-Tp ×2Monitoring, RegularBack in compliance
  111. 2016-04-012, 4-D ×2Monitoring, RegularBack in compliance
  112. 2016-04-01Heptachlor epoxide ×2Monitoring, RegularBack in compliance
  113. 2016-04-01Heptachlor ×2Monitoring, RegularBack in compliance
  114. 2016-04-01Lasso ×2Monitoring, RegularBack in compliance
  115. 2016-04-01Atrazine ×2Monitoring, RegularBack in compliance
  116. 2016-04-01Carbofuran ×2Monitoring, RegularBack in compliance
  117. 2016-04-01Hexachlorocyclopentadiene ×2Monitoring, RegularBack in compliance
  118. 2016-04-01Dinoseb ×2Monitoring, RegularBack in compliance
  119. 2016-04-01Picloram ×2Monitoring, RegularBack in compliance
  120. 2016-04-01Di(2-ethylhexyl) phthalate ×2Monitoring, RegularBack in compliance
  121. 2016-04-01Simazine ×2Monitoring, RegularBack in compliance
  122. 2016-04-01Oxamyl ×2Monitoring, RegularBack in compliance
  123. 2016-04-01Di(2-ethylhexyl) adipate ×2Monitoring, RegularBack in compliance
  124. 2016-04-01Dalapon ×2Monitoring, RegularBack in compliance
  125. 2016-04-01Toxaphene ×2Monitoring, RegularBack in compliance
  126. 2016-04-01Methoxychlor ×2Monitoring, RegularBack in compliance
  127. 2016-04-01Bhc-Gamma ×2Monitoring, RegularBack in compliance
  128. 2016-04-01Endrin ×2Monitoring, RegularBack in compliance
  129. 2016-04-01Styrene ×2Monitoring, RegularBack in compliance
  130. 2016-04-01Ethylbenzene ×2Monitoring, RegularBack in compliance
  131. 2016-04-01Toluene ×2Monitoring, RegularBack in compliance
  132. 2016-04-01Benzene ×2Monitoring, RegularBack in compliance
  133. 2016-04-01Chlorobenzene ×2Monitoring, RegularBack in compliance
  134. 2016-04-01Tetrachloroethylene ×2Monitoring, RegularBack in compliance
  135. 2016-04-011,1,2-Trichloroethane ×2Monitoring, RegularBack in compliance
  136. 2016-04-01Trichloroethylene ×2Monitoring, RegularBack in compliance
  137. 2016-04-011,2-Dichloropropane ×2Monitoring, RegularBack in compliance
  138. 2016-04-01Carbon tetrachloride ×2Monitoring, RegularBack in compliance
  139. 2016-04-011,1,1-Trichloroethane ×2Monitoring, RegularBack in compliance
  140. 2016-04-011,2-Dichloroethane ×2Monitoring, RegularBack in compliance
  141. 2016-04-01trans-1,2-Dichloroethylene ×2Monitoring, RegularBack in compliance
  142. 2016-04-011,1-Dichloroethylene ×2Monitoring, RegularBack in compliance
  143. 2016-04-01Vinyl chloride ×2Monitoring, RegularBack in compliance
  144. 2016-04-01p-Dichlorobenzene ×2Monitoring, RegularBack in compliance
  145. 2016-04-01o-Dichlorobenzene ×2Monitoring, RegularBack in compliance
  146. 2016-04-01Dichloromethane ×2Monitoring, RegularBack in compliance
  147. 2016-04-01Xylenes, Total ×2Monitoring, RegularBack in compliance
  148. 2016-04-01cis-1,2-Dichloroethylene ×2Monitoring, RegularBack in compliance
  149. 2016-04-011,2,4-Trichlorobenzene ×2Monitoring, RegularBack in compliance
  150. 2015-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  151. 2015-09-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  152. 2015-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  153. 2015-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  154. 2015-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  155. 2015-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  156. 2015-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  157. 2014-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  158. 2014-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  159. 2011-10-01E. ColiMonitoring, Source Water (GWR)Back in compliance
  160. 2010-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  161. 2008-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  162. 2000-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served6,100
Service connections1,214
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityHildale
EPA ZIP on file84784

Areas served

  • Washington County

Reading this record

Hildale - Colorado City is a community water system that draws from groundwater and serves about 6,100 people in Hildale, Utah. 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.