Community Water System · PWSID OK1021621

Cherokee Co. Rwd #1 (Ft Gibson)

Serves 710 peopleSurface WaterOwner: Local GovernmentFort Gibson, Oklahoma
Nothing open that measures the water, but 4 open testing or paperwork violations.

A missed test is not evidence of bad water. It also is not evidence of good water: for that period nobody checked.

On record since 1991: 93 violations. 13 over the limit · 42 treatment lapses · 36 missed or late tests · 2 notices or reports. Most recent began 2025-09-29.

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

13Over the limit
42Treatment lapse
36Missed or late test3 open
2Notice or report1 open

More violations on record than 84% 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: 119951997 · Missed or late test: 11998 · Missed or late test: 21999 · Missed or late test: 12000 · Missed or late test: 220002005201020152016 · Treatment lapse: 22017 · Missed or late test: 12018 · Treatment lapse: 22019 · Treatment lapse: 52019 · Treatment lapse: 52019 · Missed or late test: 12020 · Treatment lapse: 132020 · Treatment lapse: 132020 · Treatment lapse: 132020 · Treatment lapse: 132020 · Treatment lapse: 132020 · Missed or late test: 132020 · Missed or late test: 132020 · Missed or late test: 132020 · Missed or late test: 132020 · Missed or late test: 1320202021 · Treatment lapse: 182021 · Treatment lapse: 182021 · Treatment lapse: 182021 · Treatment lapse: 182021 · Treatment lapse: 182021 · Treatment lapse: 182021 · Missed or late test: 32021 · Notice or report: 12022 · Over the limit: 22022 · Treatment lapse: 22022 · Missed or late test: 22023 · Over the limit: 12023 · Missed or late test: 22024 · Over the limit: 42024 · Over the limit: 42024 · Missed or late test: 42024 · Missed or late test: 42025 · Over the limit: 62025 · Over the limit: 62025 · Missed or late test: 22025 · Notice or report: 12025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
14% over the limit · 1345% treatment lapse · 4239% missed or late test · 362% 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)Total Haloacetic Acids (HAA5)2025-07-01 · Trihalomethanes (TTHM): measured 0.0960 MG/L vs limit 0.0800 MG/L (1.2×)2025-07-01 · Trihalomethanes (TTHM): measured 0.0960 MG/L vs limit 0.0800 MG/L (1.2×)2025-04-01 · Trihalomethanes (TTHM): measured 0.1080 MG/L vs limit 0.0800 MG/L (1.3×)2025-04-01 · Trihalomethanes (TTHM): measured 0.1070 MG/L vs limit 0.0800 MG/L (1.3×)2025-01-01 · Trihalomethanes (TTHM): measured 0.1040 MG/L vs limit 0.0800 MG/L (1.3×)2025-01-01 · Trihalomethanes (TTHM): measured 0.1030 MG/L vs limit 0.0800 MG/L (1.3×)2024-10-01 · Trihalomethanes (TTHM): measured 0.0890 MG/L vs limit 0.0800 MG/L (1.1×)2024-10-01 · Trihalomethanes (TTHM): measured 0.0870 MG/L vs limit 0.0800 MG/L (1.1×)2024-07-01 · Trihalomethanes (TTHM): measured 0.0860 MG/L vs limit 0.0800 MG/L (1.1×)2024-04-01 · Trihalomethanes (TTHM): measured 0.0870 MG/L vs limit 0.0800 MG/L (1.1×)2023-01-01 · Total Haloacetic Acids (HAA5): measured 0.0610 MG/L vs limit 0.0600 MG/L (1.0×)2022-10-01 · Total Haloacetic Acids (HAA5): measured 0.0610 MG/L vs limit 0.0600 MG/L (1.0×)2022-07-01 · Total Haloacetic Acids (HAA5): measured 0.0610 MG/L vs limit 0.0600 MG/L (1.0×)
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

2.2 ppb
0 ppb
0 ppb

Open now (4)

  1. 2025-09-29Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptOpen
  2. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  3. 2025-06-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptOpen
  4. 2024-12-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptOpen

Every violation on record

  1. 2025-09-29Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptOpen
  2. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  3. 2025-07-01Trihalomethanes (TTHM) ×2MCL, Averagemeasured 0.0960 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  4. 2025-06-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptOpen
  5. 2025-04-01Trihalomethanes (TTHM) ×2MCL, Averagemeasured 0.1080 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  6. 2025-01-01Trihalomethanes (TTHM) ×2MCL, Averagemeasured 0.1040 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2024-12-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptOpen
  8. 2024-10-01Trihalomethanes (TTHM) ×2MCL, Averagemeasured 0.0890 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  9. 2024-09-29Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  10. 2024-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0860 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  11. 2024-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0870 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  12. 2024-03-31Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  13. 2024-01-01SodiumMonitoring, RegularPeriod ended · no return to compliance on file
  14. 2023-12-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  15. 2023-04-01Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  16. 2023-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0610 MG/L · limit 0.0600 MG/LBack in compliance
  17. 2022-12-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  18. 2022-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0610 MG/L · limit 0.0600 MG/LBack in compliance
  19. 2022-09-29Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  20. 2022-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0610 MG/L · limit 0.0600 MG/LBack in compliance
  21. 2022-01-01Nitrate-NitriteMonitoring, RegularBack in compliance
  22. 2022-01-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  23. 2021-11-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  24. 2021-11-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  25. 2021-09-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
Show the other 61 entries
  1. 2021-09-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  2. 2021-08-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  3. 2021-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  4. 2021-07-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  5. 2021-06-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  6. 2021-06-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  7. 2021-05-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  8. 2021-05-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  9. 2021-04-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  10. 2021-04-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  11. 2021-04-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  12. 2021-03-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  13. 2021-03-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  14. 2021-02-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  15. 2021-02-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  16. 2021-02-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  17. 2021-01-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  18. 2021-01-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  19. 2021-01-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  20. 2020-12-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  21. 2020-11-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  22. 2020-10-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  23. 2020-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  24. 2020-08-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  25. 2020-07-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  26. 2020-06-01Surface water treatment (SWTR) ×2Treatment Technique (SWTR and GWR)Period ended · no return to compliance on file
  27. 2020-06-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  28. 2020-06-01Surface water filtration (IESWTR) ×2Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  29. 2020-05-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  30. 2020-05-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  31. 2020-05-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Period ended · no return to compliance on file
  32. 2020-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  33. 2020-02-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  34. 2020-02-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  35. 2020-02-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Period ended · no return to compliance on file
  36. 2020-02-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  37. 2020-02-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  38. 2020-01-01Surface water filtration (IESWTR) ×2Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  39. 2020-01-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  40. 2020-01-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Period ended · no return to compliance on file
  41. 2020-01-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  42. 2020-01-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  43. 2019-11-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  44. 2019-10-01Carbon, TotalTreatment Technique Precursor RemovalBack in compliance
  45. 2019-02-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  46. 2019-02-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Period ended · no return to compliance on file
  47. 2019-01-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Period ended · no return to compliance on file
  48. 2019-01-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  49. 2018-12-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  50. 2018-11-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Period ended · no return to compliance on file
  51. 2017-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  52. 2016-02-01Surface water filtration (IESWTR)Single Turbidity Exceed (Enhanced SWTR)Back in compliance
  53. 2016-02-01Surface water filtration (IESWTR)Monthly Turbidity Exceed (Enhanced SWTR)Back in compliance
  54. 2000-01-01NitriteMonitoring, RegularBack in compliance
  55. 2000-01-01NitrateMonitoring, RegularBack in compliance
  56. 1999-10-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  57. 1998-12-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  58. 1998-03-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  59. 1997-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  60. 1994-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  61. 1991-06-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance

System details

Population served710
Service connections354
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityFort Gibson
EPA ZIP on file74434

Areas served

  • Cherokee County

Reading this record

Cherokee Co. Rwd #1 (Ft Gibson) is a community water system that draws from surface water and serves about 710 people in Fort Gibson, 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.