Community Water System · PWSID OK2005202

Red Rock

Serves 293 peopleSurface Water PurchasedOwner: Local GovernmentRed Rock, Oklahoma
Nothing open right now.

On record since 1979: 154 violations. 20 over the limit · 116 missed or late tests · 18 notices or reports. Most recent began 2025-07-01.

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

20Over the limit
0Treatment lapse
116Missed or late test
18Notice or report

More violations on record than 92% of active water systems in Oklahoma. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1979 · Missed or late test: 119801981 · Missed or late test: 21982 · Missed or late test: 31983 · Missed or late test: 11985 · Over the limit: 219851986 · Over the limit: 21987 · Over the limit: 11990 · Over the limit: 119901991 · Over the limit: 11992 · Over the limit: 11993 · Over the limit: 21993 · Missed or late test: 21994 · Missed or late test: 11995 · Over the limit: 11995 · Missed or late test: 219951996 · Missed or late test: 21997 · Missed or late test: 21998 · Missed or late test: 2200020052010 · Missed or late test: 22010 · Notice or report: 120102011 · Notice or report: 12012 · Notice or report: 12013 · Notice or report: 12014 · Notice or report: 120152016 · Notice or report: 12017 · Notice or report: 12019 · Missed or late test: 82019 · Missed or late test: 82019 · Missed or late test: 82019 · Notice or report: 12020 · Missed or late test: 32020 · Notice or report: 120202021 · Missed or late test: 162021 · Missed or late test: 162021 · Missed or late test: 162021 · Missed or late test: 162021 · Missed or late test: 162021 · Missed or late test: 162021 · Notice or report: 12022 · Missed or late test: 222022 · Missed or late test: 222022 · Missed or late test: 222022 · Missed or late test: 222022 · Missed or late test: 222022 · Missed or late test: 222022 · Missed or late test: 222022 · Missed or late test: 222023 · Over the limit: 32023 · 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 · Missed or late test: 292023 · Missed or late test: 292023 · Missed or late test: 292023 · Missed or late test: 292023 · Notice or report: 22024 · Over the limit: 42024 · Over the limit: 42024 · Missed or late test: 152024 · Missed or late test: 152024 · Missed or late test: 152024 · Missed or late test: 152024 · Missed or late test: 152024 · Notice or report: 62024 · Notice or report: 62025 · Over the limit: 22025 · Missed or late test: 32025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
13% over the limit · 2075% missed or late test · 11612% notice or report · 18

Across Oklahoma, 73% of violations are missed or late tests and 19% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Trihalomethanes (TTHM)2025-07-01 · Trihalomethanes (TTHM): measured 0.0840 MG/L vs limit 0.0800 MG/L (1.1×)2025-01-01 · Trihalomethanes (TTHM): measured 0.0970 MG/L vs limit 0.0800 MG/L (1.2×)2024-10-01 · Trihalomethanes (TTHM): measured 0.1080 MG/L vs limit 0.0800 MG/L (1.3×)2024-07-01 · Trihalomethanes (TTHM): measured 0.1120 MG/L vs limit 0.0800 MG/L (1.4×)2024-04-01 · Trihalomethanes (TTHM): measured 0.1040 MG/L vs limit 0.0800 MG/L (1.3×)2024-01-01 · Trihalomethanes (TTHM): measured 0.1050 MG/L vs limit 0.0800 MG/L (1.3×)2023-10-01 · Trihalomethanes (TTHM): measured 0.1050 MG/L vs limit 0.0800 MG/L (1.3×)2023-07-01 · Trihalomethanes (TTHM): measured 0.1080 MG/L vs limit 0.0800 MG/L (1.3×)2023-04-01 · Trihalomethanes (TTHM): measured 0.1040 MG/L vs limit 0.0800 MG/L (1.3×)
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 10 results on file · action level 15 ppb

13.4 ppb
7.8 ppb
6.4 ppb
1.3 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb

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

1.5 mg/L

Every violation on record

  1. 2025-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0840 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  2. 2025-03-01Revised Total Coliform RuleMONBack in compliance
  3. 2025-03-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  4. 2025-02-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  5. 2025-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0970 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  6. 2024-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1080 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2024-09-09Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  8. 2024-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Period ended · no return to compliance on file
  9. 2024-09-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  10. 2024-08-19Public NoticePN Violation for NPDWR ViolationBack in compliance
  11. 2024-08-01Revised Total Coliform RuleMONBack in compliance
  12. 2024-08-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  13. 2024-07-31Public NoticePN Violation for NPDWR ViolationBack in compliance
  14. 2024-07-02Public NoticePN Violation for NPDWR ViolationBack in compliance
  15. 2024-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1120 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  16. 2024-07-01Revised Total Coliform RuleMONBack in compliance
  17. 2024-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  18. 2024-06-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  19. 2024-05-14Public NoticePN Violation for NPDWR ViolationBack in compliance
  20. 2024-05-01Revised Total Coliform RuleMONBack in compliance
  21. 2024-04-01Chlorine ×2Monitoring and Reporting (DBP)Back in compliance
  22. 2024-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1040 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  23. 2024-04-01Revised Total Coliform RuleMONBack in compliance
  24. 2024-03-01Revised Total Coliform RuleMONBack in compliance
  25. 2024-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1050 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
Show the other 105 entries
  1. 2024-01-01Chlorine ×2Monitoring and Reporting (DBP)Back in compliance
  2. 2024-01-01Revised Total Coliform RuleMONBack in compliance
  3. 2023-12-26Public NoticePN Violation for NPDWR ViolationBack in compliance
  4. 2023-12-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  5. 2023-12-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  6. 2023-11-01Revised Total Coliform RuleMONBack in compliance
  7. 2023-10-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  8. 2023-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1050 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  9. 2023-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  10. 2023-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  11. 2023-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  12. 2023-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1080 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  13. 2023-07-01Revised Total Coliform RuleMONBack in compliance
  14. 2023-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  15. 2023-06-01Revised Total Coliform RuleMONBack in compliance
  16. 2023-05-01Revised Total Coliform RuleMONBack in compliance
  17. 2023-04-01Chlorine ×3Monitoring and Reporting (DBP)Back in compliance
  18. 2023-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1040 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  19. 2023-04-01Revised Total Coliform RuleMONBack in compliance
  20. 2023-03-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  21. 2023-03-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  22. 2023-01-01Calcium ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  23. 2023-01-01Temperature (Centigrade) ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  24. 2023-01-01Alkalinity, Total ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  25. 2023-01-01pH ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  26. 2023-01-01Conductivity @ 25 C Umhos/Cm ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  27. 2023-01-01Revised Total Coliform RuleMONBack in compliance
  28. 2023-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  29. 2023-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  30. 2022-12-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  31. 2022-12-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  32. 2022-10-01Revised Total Coliform RuleMONBack in compliance
  33. 2022-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  34. 2022-09-01Revised Total Coliform RuleMONBack in compliance
  35. 2022-07-01Calcium ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  36. 2022-07-01Temperature (Centigrade) ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  37. 2022-07-01Alkalinity, Total ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  38. 2022-07-01pH ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  39. 2022-07-01Conductivity @ 25 C Umhos/Cm ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  40. 2022-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  41. 2022-06-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  42. 2022-01-01CalciumWater Quality Parameter M/RBack in compliance
  43. 2022-01-01Temperature (Centigrade)Water Quality Parameter M/RBack in compliance
  44. 2022-01-01Alkalinity, TotalWater Quality Parameter M/RBack in compliance
  45. 2022-01-01pHWater Quality Parameter M/RBack in compliance
  46. 2022-01-01Conductivity @ 25 C Umhos/CmWater Quality Parameter M/RBack in compliance
  47. 2021-07-01Calcium ×2Water Quality Parameter M/RBack in compliance
  48. 2021-07-01Temperature (Centigrade) ×2Water Quality Parameter M/RBack in compliance
  49. 2021-07-01Alkalinity, Total ×2Water Quality Parameter M/RBack in compliance
  50. 2021-07-01pH ×2Water Quality Parameter M/RBack in compliance
  51. 2021-07-01Conductivity @ 25 C Umhos/Cm ×2Water Quality Parameter M/RBack in compliance
  52. 2021-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  53. 2021-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  54. 2021-06-01Revised Total Coliform RuleMONBack in compliance
  55. 2021-04-01Chlorine ×2Monitoring and Reporting (DBP)Back in compliance
  56. 2021-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  57. 2021-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  58. 2020-10-02Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  59. 2020-10-01Revised Total Coliform RuleMONBack in compliance
  60. 2020-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  61. 2020-07-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  62. 2019-12-02Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  63. 2019-07-31E. ColiMonitoring, Source Water (GWR)Back in compliance
  64. 2019-07-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  65. 2019-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  66. 2019-04-03E. ColiMonitoring, Source Water (GWR)Back in compliance
  67. 2019-01-01Lead and Copper Rule ×4Water Quality Parameter M/RBack in compliance
  68. 2017-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  69. 2016-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  70. 2014-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  71. 2013-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  72. 2012-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  73. 2011-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  74. 2010-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  75. 2010-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  76. 2010-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  77. 1998-04-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  78. 1998-02-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  79. 1997-11-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  80. 1997-10-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  81. 1996-06-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  82. 1996-05-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  83. 1995-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  84. 1995-06-01Coliform (TCR)MCL, Acute (TCR)Back in compliance
  85. 1995-05-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  86. 1994-02-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  87. 1993-12-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  88. 1993-10-01Coliform (TCR)MCL, Acute (TCR)Back in compliance
  89. 1993-09-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  90. 1993-06-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  91. 1992-08-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  92. 1991-10-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  93. 1990-05-01Coliform (Pre-TCR)MCL, Averagemeasured 1.10 Back in compliance
  94. 1987-05-01Coliform (Pre-TCR)MCL, Averagemeasured 2.00 Back in compliance
  95. 1986-10-01Coliform (Pre-TCR)MCL, Averagemeasured 58.00 Back in compliance
  96. 1986-07-01Coliform (Pre-TCR)MCL, Averagemeasured 3.00 Back in compliance
  97. 1985-07-01Coliform (Pre-TCR)MCL, Averagemeasured 22.00 Back in compliance
  98. 1985-05-01Coliform (Pre-TCR)MCL, Averagemeasured 16.00 Back in compliance
  99. 1983-05-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  100. 1982-10-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  101. 1982-08-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  102. 1982-06-30Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  103. 1981-07-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  104. 1981-06-30Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  105. 1979-11-30Coliform (Pre-TCR)Monitoring, RegularBack in compliance

System details

Population served293
Service connections90
Water sourceSurface Water Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityRed Rock
EPA ZIP on file74651

Areas served

  • Noble County

Reading this record

Red Rock is a community water system that draws from surface water purchased and serves about 293 people in Red Rock, Oklahoma. 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.