Community Water System · PWSID OK3004907

Mcintosh Co. Rws & Swmd #9

Serves 1,761 peopleSurface Water PurchasedOwner: Local GovernmentChecotah, Oklahoma
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 1982: 53 violations. 30 over the limit · 1 treatment lapse · 20 missed or late tests · 2 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.

30Over the limit
1Treatment lapse1 open
20Missed or late test
2Notice or report1 open

More violations on record than 69% 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

1982 · Missed or late test: 119851990199520002001 · Over the limit: 1200520102014 · Over the limit: 12015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 42015 · Missed or late test: 42015 · Missed or late test: 42015 · Missed or late test: 42015 · Missed or late test: 420152016 · Over the limit: 32016 · Over the limit: 32016 · Over the limit: 32016 · Missed or late test: 22016 · Missed or late test: 22017 · Over the limit: 22017 · Over the limit: 22017 · Missed or late test: 12018 · Over the limit: 22018 · Over the limit: 22019 · Over the limit: 42019 · Over the limit: 42019 · Over the limit: 42019 · Over the limit: 42019 · Missed or late test: 32019 · Missed or late test: 32019 · Missed or late test: 32020 · Over the limit: 32020 · Over the limit: 32020 · Over the limit: 32020 · Missed or late test: 22020 · Missed or late test: 220202021 · Over the limit: 32021 · Over the limit: 32021 · Over the limit: 32021 · Missed or late test: 22021 · Missed or late test: 22022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Missed or late test: 32022 · Missed or late test: 32022 · Missed or late test: 32023 · Over the limit: 22023 · Over the limit: 22023 · Missed or late test: 22023 · Missed or late test: 22024 · Treatment lapse: 12024 · Notice or report: 12025 · Over the limit: 12025 · Notice or report: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
57% over the limit · 302% treatment lapse · 138% missed or late test · 204% notice or report · 2

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 0.0980 MG/L vs limit 0.0800 MG/L (1.2×)2023-07-01 · Trihalomethanes (TTHM): measured 0.0870 MG/L vs limit 0.0800 MG/L (1.1×)2023-01-01 · Trihalomethanes (TTHM): measured 0.0900 MG/L vs limit 0.0800 MG/L (1.1×)2022-10-01 · Trihalomethanes (TTHM): measured 0.0890 MG/L vs limit 0.0800 MG/L (1.1×)2022-07-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)2022-04-01 · Trihalomethanes (TTHM): measured 0.0840 MG/L vs limit 0.0800 MG/L (1.1×)2022-01-01 · Trihalomethanes (TTHM): measured 0.1010 MG/L vs limit 0.0800 MG/L (1.3×)2021-10-01 · Trihalomethanes (TTHM): measured 0.0970 MG/L vs limit 0.0800 MG/L (1.2×)2021-07-01 · Trihalomethanes (TTHM): measured 0.0830 MG/L vs limit 0.0800 MG/L (1.0×)2021-04-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)2020-07-01 · Trihalomethanes (TTHM): measured 0.0890 MG/L vs limit 0.0800 MG/L (1.1×)2020-04-01 · Trihalomethanes (TTHM): measured 0.1010 MG/L vs limit 0.0800 MG/L (1.3×)2020-01-01 · Trihalomethanes (TTHM): measured 0.0940 MG/L vs limit 0.0800 MG/L (1.2×)2019-07-01 · Trihalomethanes (TTHM): measured 0.0840 MG/L vs limit 0.0800 MG/L (1.1×)2019-04-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)2019-01-01 · Trihalomethanes (TTHM): measured 0.0890 MG/L vs limit 0.0800 MG/L (1.1×)2019-01-01 · Trihalomethanes (TTHM): measured 0.0820 MG/L vs limit 0.0800 MG/L (1.0×)2018-10-01 · Trihalomethanes (TTHM): measured 0.0840 MG/L vs limit 0.0800 MG/L (1.1×)2018-07-01 · Trihalomethanes (TTHM): measured 0.0820 MG/L vs limit 0.0800 MG/L (1.0×)2017-04-01 · Trihalomethanes (TTHM): measured 0.0890 MG/L vs limit 0.0800 MG/L (1.1×)2017-01-01 · Trihalomethanes (TTHM): measured 0.0890 MG/L vs limit 0.0800 MG/L (1.1×)2016-10-01 · Trihalomethanes (TTHM): measured 0.0960 MG/L vs limit 0.0800 MG/L (1.2×)2016-07-01 · Trihalomethanes (TTHM): measured 0.1000 MG/L vs limit 0.0800 MG/L (1.2×)2016-04-01 · Trihalomethanes (TTHM): measured 0.0820 MG/L vs limit 0.0800 MG/L (1.0×)2015-10-01 · Trihalomethanes (TTHM): measured 0.0900 MG/L vs limit 0.0800 MG/L (1.1×)2015-07-01 · Trihalomethanes (TTHM): measured 0.0890 MG/L vs limit 0.0800 MG/L (1.1×)2015-04-01 · Trihalomethanes (TTHM): measured 0.1010 MG/L vs limit 0.0800 MG/L (1.3×)2015-01-01 · Trihalomethanes (TTHM): measured 0.1040 MG/L vs limit 0.0800 MG/L (1.3×)2014-07-01 · Trihalomethanes (TTHM): measured 0.0840 MG/L vs limit 0.0800 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 4 results on file · action level 15 ppb

0 ppb
0 ppb
0 ppb
0 ppb

Open now (2)

  1. 2024-10-17Lead service line inventoryRPTOpen
  2. 2024-10-17Lead service line inventoryTTOpen

Every violation on record

  1. 2025-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0980 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  2. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  3. 2024-10-17Lead service line inventoryRPTOpen
  4. 2024-10-17Lead service line inventoryTTOpen
  5. 2023-12-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  6. 2023-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0870 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2023-04-01Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  8. 2023-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0900 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  9. 2022-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0890 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  10. 2022-09-29Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  11. 2022-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  12. 2022-06-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  13. 2022-06-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  14. 2022-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0840 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  15. 2022-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1010 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  16. 2021-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0970 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  17. 2021-09-29Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  18. 2021-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0830 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  19. 2021-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  20. 2021-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  21. 2020-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0890 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  22. 2020-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  23. 2020-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1010 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  24. 2020-03-31Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  25. 2020-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0940 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
Show the other 27 entries
  1. 2019-12-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  2. 2019-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  3. 2019-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0840 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  4. 2019-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  5. 2019-04-01Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  6. 2019-01-01Trihalomethanes (TTHM) ×2MCL, Averagemeasured 0.0890 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2018-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0840 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  8. 2018-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0820 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  9. 2017-12-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  10. 2017-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0890 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  11. 2017-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0890 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  12. 2016-12-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  13. 2016-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0960 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  14. 2016-09-29Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  15. 2016-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1000 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  16. 2016-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0820 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  17. 2015-12-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  18. 2015-12-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  19. 2015-12-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  20. 2015-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0900 MG/L · limit 0.0800 MG/LBack in compliance
  21. 2015-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0890 MG/L · limit 0.0800 MG/LBack in compliance
  22. 2015-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1010 MG/L · limit 0.0800 MG/LBack in compliance
  23. 2015-04-01Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  24. 2015-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1040 MG/L · limit 0.0800 MG/LBack in compliance
  25. 2014-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0840 MG/L · limit 0.0800 MG/LBack in compliance
  26. 2001-05-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  27. 1982-08-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance

System details

Population served1,761
Service connections592
Water sourceSurface Water Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityChecotah
EPA ZIP on file74426

Areas served

  • Mcintosh County

Reading this record

Mcintosh Co. Rws & Swmd #9 is a community water system that draws from surface water purchased and serves about 1,761 people in Checotah, 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.