Community Water System · PWSID OK3005913

Pawnee Co Rwd #4

Serves 415 peopleSurface Water PurchasedOwner: Local GovernmentPawnee, Oklahoma
Nothing open right now.

On record since 1998: 51 violations. 31 over the limit · 17 missed or late tests · 3 notices or reports. Most recent began 2023-01-01.

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

31Over the limit
0Treatment lapse
17Missed or late test
3Notice or report

More violations on record than 68% 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

1998 · Missed or late test: 21998 · Missed or late test: 21999 · Missed or late test: 1200020052006 · Notice or report: 12007 · Notice or report: 12008 · Notice or report: 1201020152016 · Over the limit: 42016 · Over the limit: 42016 · Over the limit: 42016 · Over the limit: 42017 · Over the limit: 12018 · Over the limit: 32018 · Over the limit: 32018 · Over the limit: 32018 · Missed or late test: 22018 · Missed or late test: 22019 · Over the limit: 52019 · Over the limit: 52019 · Over the limit: 52019 · Over the limit: 52019 · Over the limit: 52019 · Missed or late test: 52019 · Missed or late test: 52019 · Missed or late test: 52019 · Missed or late test: 52019 · Missed or late test: 52020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 82020 · Missed or late test: 42020 · Missed or late test: 42020 · Missed or late test: 42020 · Missed or late test: 420202021 · Over the limit: 62021 · Over the limit: 62021 · Over the limit: 62021 · Over the limit: 62021 · Over the limit: 62021 · Over the limit: 62022 · Over the limit: 32022 · Over the limit: 32022 · Over the limit: 32022 · Missed or late test: 32022 · Missed or late test: 32022 · Missed or late test: 32023 · Over the limit: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
61% over the limit · 3133% missed or late test · 176% notice or report · 3

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)Total Haloacetic Acids (HAA5)2023-01-01 · Trihalomethanes (TTHM): measured 0.0810 MG/L vs limit 0.0800 MG/L (1.0×)2022-07-01 · Trihalomethanes (TTHM): measured 0.0810 MG/L vs limit 0.0800 MG/L (1.0×)2022-04-01 · Trihalomethanes (TTHM): measured 0.0830 MG/L vs limit 0.0800 MG/L (1.0×)2022-01-01 · Trihalomethanes (TTHM): measured 0.1030 MG/L vs limit 0.0800 MG/L (1.3×)2021-10-01 · Trihalomethanes (TTHM): measured 0.1180 MG/L vs limit 0.0800 MG/L (1.5×)2021-07-01 · Trihalomethanes (TTHM): measured 0.1230 MG/L vs limit 0.0800 MG/L (1.5×)2021-04-01 · Trihalomethanes (TTHM): measured 0.1450 MG/L vs limit 0.0800 MG/L (1.8×)2021-04-01 · Total Haloacetic Acids (HAA5): measured 0.0620 MG/L vs limit 0.0600 MG/L (1.0×)2021-01-01 · Trihalomethanes (TTHM): measured 0.1570 MG/L vs limit 0.0800 MG/L (2.0×)2021-01-01 · Total Haloacetic Acids (HAA5): measured 0.0680 MG/L vs limit 0.0600 MG/L (1.1×)2020-10-01 · Trihalomethanes (TTHM): measured 0.1760 MG/L vs limit 0.0800 MG/L (2.2×)2020-10-01 · Total Haloacetic Acids (HAA5): measured 0.0800 MG/L vs limit 0.0600 MG/L (1.3×)2020-07-01 · Trihalomethanes (TTHM): measured 0.1700 MG/L vs limit 0.0800 MG/L (2.1×)2020-07-01 · Total Haloacetic Acids (HAA5): measured 0.0900 MG/L vs limit 0.0600 MG/L (1.5×)2020-04-01 · Total Haloacetic Acids (HAA5): measured 0.0790 MG/L vs limit 0.0600 MG/L (1.3×)2020-04-01 · Trihalomethanes (TTHM): measured 0.1730 MG/L vs limit 0.0800 MG/L (2.2×)2020-01-01 · Trihalomethanes (TTHM): measured 0.1580 MG/L vs limit 0.0800 MG/L (2.0×)2020-01-01 · Total Haloacetic Acids (HAA5): measured 0.0740 MG/L vs limit 0.0600 MG/L (1.2×)2019-10-01 · Trihalomethanes (TTHM): measured 0.1300 MG/L vs limit 0.0800 MG/L (1.6×)2019-07-01 · Trihalomethanes (TTHM): measured 0.1330 MG/L vs limit 0.0800 MG/L (1.7×)2019-04-01 · Trihalomethanes (TTHM): measured 0.1320 MG/L vs limit 0.0800 MG/L (1.7×)2019-04-01 · Total Haloacetic Acids (HAA5): measured 0.0650 MG/L vs limit 0.0600 MG/L (1.1×)2019-01-01 · Trihalomethanes (TTHM): measured 0.1250 MG/L vs limit 0.0800 MG/L (1.6×)2018-10-01 · Trihalomethanes (TTHM): measured 0.1510 MG/L vs limit 0.0800 MG/L (1.9×)2018-07-01 · Trihalomethanes (TTHM): measured 0.1980 MG/L vs limit 0.0800 MG/L (2.5×)2018-07-01 · Total Haloacetic Acids (HAA5): measured 0.0620 MG/L vs limit 0.0600 MG/L (1.0×)2017-01-01 · Trihalomethanes (TTHM): measured 0.0830 MG/L vs limit 0.0800 MG/L (1.0×)2016-10-01 · Total Haloacetic Acids (HAA5): measured 0.0670 MG/L vs limit 0.0600 MG/L (1.1×)2016-10-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)2016-07-01 · Total Haloacetic Acids (HAA5): measured 0.0700 MG/L vs limit 0.0600 MG/L (1.2×)2016-07-01 · Trihalomethanes (TTHM): measured 0.0980 MG/L vs limit 0.0800 MG/L (1.2×)
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 5 results on file · action level 15 ppb

0.9 ppb
0 ppb
0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2023-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0810 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  2. 2022-12-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  3. 2022-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0810 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  4. 2022-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0830 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  5. 2022-03-01Revised Total Coliform RuleMONBack in compliance
  6. 2022-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  7. 2022-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1030 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  8. 2021-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1180 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  9. 2021-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1230 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  10. 2021-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1450 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  11. 2021-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0620 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  12. 2021-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1570 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  13. 2021-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0680 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  14. 2020-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1760 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  15. 2020-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0800 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  16. 2020-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1700 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  17. 2020-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0900 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  18. 2020-06-30Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  19. 2020-06-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  20. 2020-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0790 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  21. 2020-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1730 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  22. 2020-03-31Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  23. 2020-03-31Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  24. 2020-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1580 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  25. 2020-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0740 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
Show the other 25 entries
  1. 2019-10-01Chlorine ×2Monitoring and Reporting (DBP)Back in compliance
  2. 2019-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1300 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  3. 2019-09-29Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  4. 2019-09-01Revised Total Coliform RuleMONBack in compliance
  5. 2019-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1330 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  6. 2019-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  7. 2019-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1320 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  8. 2019-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0650 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  9. 2019-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1250 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  10. 2018-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1510 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  11. 2018-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1980 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  12. 2018-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0620 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  13. 2018-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  14. 2018-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  15. 2017-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0830 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  16. 2016-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0670 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  17. 2016-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  18. 2016-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0700 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  19. 2016-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0980 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  20. 2008-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  21. 2007-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  22. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  23. 1999-01-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  24. 1998-12-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  25. 1998-11-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance

System details

Population served415
Service connections372
Water sourceSurface Water Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityPawnee
EPA ZIP on file74058

Areas served

  • Pawnee County

Reading this record

Pawnee Co Rwd #4 is a community water system that draws from surface water purchased and serves about 415 people in Pawnee, 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.