Community Water System · PWSID OK2003703

Okarche

Serves 1,110 peopleGroundwaterOwner: Local GovernmentOkarche, Oklahoma
Nothing open right now.

On record since 1991: 47 violations. 42 over the limit · 4 missed or late tests · 1 notice or report. 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.

42Over the limit
0Treatment lapse
4Missed or late test
1Notice or report

More violations on record than 65% 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

1991 · Missed or late test: 11994 · Missed or late test: 1199520002001 · Over the limit: 32001 · Over the limit: 32001 · Over the limit: 320052010 · Missed or late test: 120102015 · Notice or report: 120152016 · Over the limit: 42016 · Over the limit: 42016 · Over the limit: 42016 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Missed or late test: 12018 · Over the limit: 42018 · Over the limit: 42018 · Over the limit: 42018 · Over the limit: 42019 · Over the limit: 42019 · Over the limit: 42019 · Over the limit: 42019 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 420202021 · Over the limit: 42021 · Over the limit: 42021 · Over the limit: 42021 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42023 · Over the limit: 42023 · Over the limit: 42023 · Over the limit: 42023 · Over the limit: 42024 · Over the limit: 42024 · Over the limit: 42024 · Over the limit: 42024 · Over the limit: 42025 · Over the limit: 32025 · Over the limit: 32025 · Over the limit: 32025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
89% over the limit · 429% missed or late test · 42% notice or report · 1

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×+Nitrate-NitriteNitrate2025-07-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2025-04-01 · Nitrate-Nitrite: measured 17.00 MG/L vs limit 10.00 MG/L (1.7×)2025-01-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2024-10-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2024-07-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2024-04-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2024-01-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2023-10-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2023-07-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2023-04-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2023-01-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2022-10-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2022-07-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2022-04-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2022-01-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2021-10-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2021-07-01 · Nitrate-Nitrite: measured 15.00 MG/L vs limit 10.00 MG/L (1.5×)2021-04-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2021-01-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2020-10-01 · Nitrate-Nitrite: measured 15.00 MG/L vs limit 10.00 MG/L (1.5×)2020-07-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2020-04-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2020-01-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2019-10-01 · Nitrate-Nitrite: measured 15.00 MG/L vs limit 10.00 MG/L (1.5×)2019-07-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2019-04-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2019-01-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2018-10-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2018-07-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2018-04-01 · Nitrate-Nitrite: measured 15.00 MG/L vs limit 10.00 MG/L (1.5×)2018-01-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2017-10-01 · Nitrate-Nitrite: measured 15.00 MG/L vs limit 10.00 MG/L (1.5×)2017-07-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2017-04-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2017-01-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2016-10-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2016-07-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2016-04-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2016-01-01 · Nitrate-Nitrite: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2001-10-01 · Nitrate: measured 10.80 vs limit 10.00 (1.1×)2001-07-01 · Nitrate: measured 11.39 vs limit 10.00 (1.1×)2001-04-01 · Nitrate: measured 10.65 vs limit 10.00 (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 3 results on file · action level 15 ppb

7.4 ppb
0 ppb
0 ppb

Every violation on record

  1. 2025-07-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  2. 2025-04-01Nitrate-NitriteMCL, Single Samplemeasured 17.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  3. 2025-01-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  4. 2024-10-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  5. 2024-07-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  6. 2024-04-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  7. 2024-01-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  8. 2023-10-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  9. 2023-07-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  10. 2023-04-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  11. 2023-01-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  12. 2022-10-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  13. 2022-07-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  14. 2022-04-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  15. 2022-01-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  16. 2021-10-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  17. 2021-07-01Nitrate-NitriteMCL, Single Samplemeasured 15.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  18. 2021-04-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  19. 2021-01-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  20. 2020-10-01Nitrate-NitriteMCL, Single Samplemeasured 15.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  21. 2020-07-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  22. 2020-04-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  23. 2020-01-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  24. 2019-10-01Nitrate-NitriteMCL, Single Samplemeasured 15.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  25. 2019-07-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
Show the other 22 entries
  1. 2019-04-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  2. 2019-01-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  3. 2018-10-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  4. 2018-07-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  5. 2018-04-01Nitrate-NitriteMCL, Single Samplemeasured 15.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  6. 2018-01-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  7. 2017-10-01Nitrate-NitriteMCL, Single Samplemeasured 15.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  8. 2017-07-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  9. 2017-04-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  10. 2017-03-02E. ColiMonitoring, Source Water (GWR)Back in compliance
  11. 2017-01-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  12. 2016-10-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  13. 2016-07-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  14. 2016-04-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  15. 2016-01-01Nitrate-NitriteMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  16. 2015-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  17. 2010-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  18. 2001-10-01NitrateMCL, Averagemeasured 10.80 · limit 10.00 Back in compliance
  19. 2001-07-01NitrateMCL, Averagemeasured 11.39 · limit 10.00 Back in compliance
  20. 2001-04-01NitrateMCL, Averagemeasured 10.65 · limit 10.00 Back in compliance
  21. 1994-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  22. 1991-06-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance

System details

Population served1,110
Service connections641
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityOkarche
EPA ZIP on file73762

Areas served

  • Kingfisher County

Reading this record

Okarche is a community water system that draws from groundwater and serves about 1,110 people in Okarche, 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.