Community Water System · PWSID AZ0415002

Cienega Water Company Inc

Serves 108 peopleGroundwaterOwner: PrivateParker, Arizona
1 open treatment violation.

Open for: Lead service line inventory. EPA counts treatment-technique violations as health-based: a required protective step was not done. It is not a measurement of contamination.

On record since 2002: 132 violations. 12 over the limit · 1 treatment lapse · 81 missed or late tests · 38 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.

12Over the limit
1Treatment lapse1 open
81Missed or late test
38Notice or report6 open

More violations on record than 97% 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 · Notice or report: 12004 · Notice or report: 12005 · Notice or report: 120052006 · Missed or late test: 12006 · Notice or report: 12007 · Notice or report: 12008 · Notice or report: 12009 · Notice or report: 12010 · Missed or late test: 120102011 · Notice or report: 22012 · Notice or report: 22013 · Over the limit: 32013 · Over the limit: 32013 · Missed or late test: 32013 · Missed or late test: 32013 · Notice or report: 22014 · Missed or late test: 22014 · Notice or report: 12015 · Over the limit: 42015 · Over the limit: 42015 · Missed or late test: 92015 · Missed or late test: 92015 · Missed or late test: 92015 · Missed or late test: 92015 · Missed or late test: 920152016 · Over the limit: 32016 · Over the limit: 32016 · Missed or late test: 82016 · Missed or late test: 82016 · Missed or late test: 82016 · Missed or late test: 82017 · Missed or late test: 62017 · Missed or late test: 62017 · Missed or late test: 62018 · Missed or late test: 62018 · Missed or late test: 62018 · Missed or late test: 62019 · Missed or late test: 62019 · Missed or late test: 62019 · Missed or late test: 62019 · Notice or report: 12020 · Missed or late test: 92020 · Missed or late test: 92020 · Missed or late test: 92020 · Missed or late test: 92020 · Missed or late test: 92020 · Notice or report: 62020 · Notice or report: 62020 · Notice or report: 620202021 · Missed or late test: 62021 · Missed or late test: 62021 · Missed or late test: 62021 · Notice or report: 12022 · Missed or late test: 62022 · Missed or late test: 62022 · Missed or late test: 62022 · Notice or report: 22023 · Missed or late test: 62023 · Missed or late test: 62023 · Missed or late test: 62023 · Notice or report: 52023 · Notice or report: 52023 · Notice or report: 52024 · Over the limit: 12024 · Treatment lapse: 12024 · Missed or late test: 62024 · Missed or late test: 62024 · Missed or late test: 62024 · Notice or report: 42024 · Notice or report: 42025 · Over the limit: 12025 · Missed or late test: 62025 · Missed or late test: 62025 · Missed or late test: 62025 · Notice or report: 42025 · Notice or report: 42025
One square ≈ 2 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
9% over the limit · 12<1% treatment lapse · 161% missed or late test · 8129% notice or report · 38

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×+Fluoride2025-04-01 · Fluoride: measured 4.60 MG/L vs limit 4.00 MG/L (1.1×)2024-10-01 · Fluoride: measured 4.40 MG/L vs limit 4.00 MG/L (1.1×)2016-07-01 · Fluoride: measured 4.90 MG/L vs limit 4.00 MG/L (1.2×)2016-04-01 · Fluoride: measured 4.90 MG/L vs limit 4.00 MG/L (1.2×)2016-01-01 · Fluoride: measured 4.30 MG/L vs limit 4.00 MG/L (1.1×)2015-10-01 · Fluoride: measured 4.30 MG/L vs limit 4.00 MG/L (1.1×)2015-07-01 · Fluoride: measured 4.30 MG/L vs limit 4.00 MG/L (1.1×)2015-04-01 · Fluoride: measured 4.30 MG/L vs limit 4.00 MG/L (1.1×)2015-01-01 · Fluoride: measured 4.30 MG/L vs limit 4.00 MG/L (1.1×)2013-07-01 · Fluoride: measured 4.70 MG/L vs limit 4.00 MG/L (1.2×)2013-04-01 · Fluoride: measured 5.40 MG/L vs limit 4.00 MG/L (1.4×)2013-01-01 · Fluoride: measured 4.50 MG/L vs limit 4.00 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 7 results on file · action level 15 ppb

4.6 ppb
0.6 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb

Open now (7)

  1. 2025-07-30Public NoticePN Violation for NPDWR ViolationOpen
  2. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  3. 2025-04-01Public NoticePN Violation for NPDWR ViolationOpen
  4. 2025-01-16Public NoticePN Violation for NPDWR ViolationOpen
  5. 2024-12-20Public NoticePN Violation for NPDWR ViolationOpen
  6. 2024-10-17Lead service line inventoryRPTOpen
  7. 2024-10-17Lead service line inventoryTTOpen

Every violation on record

  1. 2025-09-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  2. 2025-09-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  3. 2025-07-30Public NoticePN Violation for NPDWR ViolationOpen
  4. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  5. 2025-05-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  6. 2025-04-01Public NoticePN Violation for NPDWR ViolationOpen
  7. 2025-04-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  8. 2025-04-01FluorideMCL, Averagemeasured 4.60 MG/L · limit 4.00 MG/LPeriod ended · no return to compliance on file
  9. 2025-01-16Public NoticePN Violation for NPDWR ViolationOpen
  10. 2025-01-01FluorideMonitoring, RegularPeriod ended · no return to compliance on file
  11. 2025-01-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  12. 2024-12-20Public NoticePN Violation for NPDWR ViolationOpen
  13. 2024-12-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  14. 2024-10-17Lead service line inventoryRPTOpen
  15. 2024-10-17Lead service line inventoryTTOpen
  16. 2024-10-01FluorideMCL, Averagemeasured 4.40 MG/L · limit 4.00 MG/LPeriod ended · no return to compliance on file
  17. 2024-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  18. 2024-09-01Revised Total Coliform RuleRPTBack in compliance
  19. 2024-06-01Revised Total Coliform RuleMONBack in compliance
  20. 2024-04-01FluorideMonitoring, RegularBack in compliance
  21. 2024-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  22. 2024-03-29Public NoticePN Violation without NPDWR ViolationBack in compliance
  23. 2024-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  24. 2023-10-02Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  25. 2023-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
Show the other 105 entries
  1. 2023-10-01Revised Total Coliform RuleMONBack in compliance
  2. 2023-07-20Public NoticePN Violation without NPDWR ViolationBack in compliance
  3. 2023-04-21Public NoticePN Violation without NPDWR ViolationBack in compliance
  4. 2023-04-08Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  5. 2023-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  6. 2023-04-01Revised Total Coliform RuleMONBack in compliance
  7. 2023-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  8. 2023-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  9. 2022-12-01Revised Total Coliform RuleMONBack in compliance
  10. 2022-10-02Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  11. 2022-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  12. 2022-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  13. 2022-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  14. 2022-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  15. 2022-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  16. 2021-10-01FluorideMonitoring, RegularBack in compliance
  17. 2021-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  18. 2021-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  19. 2021-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  20. 2021-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  21. 2021-01-12Public NoticePN Violation without NPDWR ViolationBack in compliance
  22. 2021-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  23. 2020-11-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  24. 2020-11-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  25. 2020-10-02Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  26. 2020-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  27. 2020-09-14Public NoticePN Violation without NPDWR ViolationBack in compliance
  28. 2020-08-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  29. 2020-07-12Public NoticePN Violation without NPDWR ViolationBack in compliance
  30. 2020-07-01FluorideMonitoring, RegularBack in compliance
  31. 2020-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  32. 2020-05-01Revised Total Coliform RuleMONBack in compliance
  33. 2020-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  34. 2020-03-01Revised Total Coliform RuleMONBack in compliance
  35. 2020-01-29Public NoticePN Violation for NPDWR ViolationBack in compliance
  36. 2020-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  37. 2020-01-01Revised Total Coliform RuleRPTBack in compliance
  38. 2019-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  39. 2019-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  40. 2019-07-01Revised Total Coliform RuleMONBack in compliance
  41. 2019-04-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  42. 2019-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  43. 2019-04-01FluorideMonitoring, RegularBack in compliance
  44. 2019-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  45. 2018-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  46. 2018-10-01FluorideMonitoring, RegularPeriod ended · no return to compliance on file
  47. 2018-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  48. 2018-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  49. 2018-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  50. 2018-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  51. 2017-10-01FluorideMonitoring, RegularBack in compliance
  52. 2017-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  53. 2017-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  54. 2017-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  55. 2017-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  56. 2017-01-01FluorideMonitoring, RegularBack in compliance
  57. 2016-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  58. 2016-10-01FluorideMonitoring, RegularBack in compliance
  59. 2016-07-01FluorideMCL, Averagemeasured 4.90 MG/L · limit 4.00 MG/LBack in compliance
  60. 2016-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  61. 2016-07-01FluorideMonitoring, RegularBack in compliance
  62. 2016-04-01FluorideMonitoring, RegularBack in compliance
  63. 2016-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  64. 2016-04-01FluorideMCL, Averagemeasured 4.90 MG/L · limit 4.00 MG/LBack in compliance
  65. 2016-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  66. 2016-01-01FluorideMonitoring, RegularBack in compliance
  67. 2016-01-01FluorideMCL, Averagemeasured 4.30 MG/L · limit 4.00 MG/LBack in compliance
  68. 2015-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  69. 2015-10-01FluorideMonitoring, RegularBack in compliance
  70. 2015-10-01FluorideMCL, Averagemeasured 4.30 MG/L · limit 4.00 MG/LBack in compliance
  71. 2015-10-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  72. 2015-09-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  73. 2015-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  74. 2015-07-01FluorideMCL, Averagemeasured 4.30 MG/L · limit 4.00 MG/LBack in compliance
  75. 2015-07-01FluorideMonitoring, RegularBack in compliance
  76. 2015-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  77. 2015-04-01FluorideMonitoring, RegularBack in compliance
  78. 2015-04-01FluorideMCL, Single Samplemeasured 4.30 MG/L · limit 4.00 MG/LBack in compliance
  79. 2015-01-01FluorideMCL, Single Samplemeasured 4.30 MG/L · limit 4.00 MG/LBack in compliance
  80. 2015-01-01FluorideMonitoring, RegularBack in compliance
  81. 2014-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  82. 2014-07-01FluorideMonitoring, RegularBack in compliance
  83. 2014-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  84. 2013-10-01Dbp Stage 2Failure Submit IDSE/Subpart V Plan RptBack in compliance
  85. 2013-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  86. 2013-07-01FluorideMCL, Averagemeasured 4.70 MG/L · limit 4.00 MG/LBack in compliance
  87. 2013-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  88. 2013-07-01FluorideMonitoring, RegularBack in compliance
  89. 2013-04-01FluorideMCL, Averagemeasured 5.40 MG/L · limit 4.00 MG/LBack in compliance
  90. 2013-04-01FluorideMonitoring, RegularBack in compliance
  91. 2013-01-01FluorideMCL, Averagemeasured 4.50 MG/L · limit 4.00 MG/LBack in compliance
  92. 2012-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  93. 2012-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  94. 2011-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  95. 2011-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  96. 2010-04-23E. ColiMonitoring, Source Water (GWR)Back in compliance
  97. 2009-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  98. 2008-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  99. 2007-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  100. 2006-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  101. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  102. 2005-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  103. 2004-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  104. 2003-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  105. 2002-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served108
Service connections54
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityParker
EPA ZIP on file85344

Areas served

  • Parker, La Paz County

Reading this record

Cienega Water Company Inc is a community water system that draws from groundwater and serves about 108 people in Parker, 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.