Community Water System · PWSID OK2000806

Apache

Serves 1,521 peopleGroundwaterOwner: Local GovernmentApache, 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 1979: 65 violations. 24 over the limit · 1 treatment lapse · 38 missed or late tests · 2 notices or reports. Most recent began 2025-04-01.

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

24Over the limit
1Treatment lapse1 open
38Missed or late test
2Notice or report1 open

More violations on record than 75% 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: 11980 · Missed or late test: 21980 · Missed or late test: 219801985 · Over the limit: 119851986 · Over the limit: 119901995 · Over the limit: 21995 · Over the limit: 21995 · Missed or late test: 119951996 · Over the limit: 11998 · Over the limit: 21998 · Over the limit: 220002001 · Over the limit: 120052009 · Missed or late test: 120102014 · Over the limit: 32014 · Over the limit: 32014 · Over the limit: 32015 · Over the limit: 52015 · Over the limit: 52015 · Over the limit: 52015 · Over the limit: 52015 · Over the limit: 520152016 · Over the limit: 52016 · Over the limit: 52016 · Over the limit: 52016 · Over the limit: 52016 · Over the limit: 52017 · Over the limit: 12017 · Missed or late test: 52017 · Missed or late test: 52017 · Missed or late test: 52017 · Missed or late test: 52017 · Missed or late test: 52017 · Notice or report: 12018 · Missed or late test: 12019 · Missed or late test: 12020 · Missed or late test: 120202022 · Over the limit: 12022 · Missed or late test: 112022 · Missed or late test: 112022 · Missed or late test: 112022 · Missed or late test: 112022 · Missed or late test: 112022 · Missed or late test: 112022 · Missed or late test: 112022 · Missed or late test: 112022 · Missed or late test: 112022 · Missed or late test: 112022 · Missed or late test: 112023 · Missed or late test: 42023 · Missed or late test: 42023 · Missed or late test: 42023 · Missed or late test: 42024 · Treatment lapse: 12024 · Missed or late test: 52024 · Missed or late test: 52024 · Missed or late test: 52024 · Missed or late test: 52024 · Missed or late test: 52024 · Notice or report: 12025 · Over the limit: 12025 · Missed or late test: 52025 · Missed or late test: 52025 · Missed or late test: 52025 · Missed or late test: 52025 · Missed or late test: 52025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
37% over the limit · 242% treatment lapse · 158% missed or late test · 383% 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×+Nitrate-NitriteCombined UraniumGross Alpha, Excl. Radon and U2025-01-01 · Nitrate-Nitrite: measured 27.00 MG/L vs limit 10.00 MG/L (2.7×)2022-07-01 · Combined Uranium: measured 31.00 UG/L vs limit 30.00 UG/L (1.0×)2017-04-01 · Nitrate-Nitrite: measured 30.00 MG/L vs limit 10.00 MG/L (3.0×)2016-10-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2016-04-01 · Gross Alpha, Excl. Radon and U: measured 22.00 PCI/L vs limit 15.00 PCI/L (1.5×)2016-04-01 · Combined Uranium: measured 37.00 UG/L vs limit 30.00 UG/L (1.2×)2016-01-01 · Combined Uranium: measured 44.00 UG/L vs limit 30.00 UG/L (1.5×)2016-01-01 · Gross Alpha, Excl. Radon and U: measured 29.00 PCI/L vs limit 15.00 PCI/L (1.9×)2015-10-01 · Combined Uranium: measured 53.00 UG/L vs limit 30.00 UG/L (1.8×)2015-10-01 · Gross Alpha, Excl. Radon and U: measured 36.00 PCI/L vs limit 15.00 PCI/L (2.4×)2015-07-01 · Combined Uranium: measured 36.00 UG/L vs limit 30.00 UG/L (1.2×)2015-07-01 · Gross Alpha, Excl. Radon and U: measured 40.00 PCI/L vs limit 15.00 PCI/L (2.7×)2015-04-01 · Combined Uranium: measured 31.00 UG/L vs limit 30.00 UG/L (1.0×)2014-10-01 · Combined Uranium: measured 32.00 UG/L vs limit 30.00 UG/L (1.1×)2014-07-01 · Combined Uranium: measured 31.00 UG/L vs limit 30.00 UG/L (1.0×)2014-04-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/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 3 results on file · action level 15 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. 2025-04-01Gross Beta Particle ActivityMonitoring, RegularPeriod ended · no return to compliance on file
  2. 2025-04-01Combined Radium (-226 and -228)Monitoring, RegularPeriod ended · no return to compliance on file
  3. 2025-04-01Combined UraniumMonitoring, RegularPeriod ended · no return to compliance on file
  4. 2025-04-01Gross Alpha, Excl. Radon and UMonitoring, RegularPeriod ended · no return to compliance on file
  5. 2025-04-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  6. 2025-01-01Nitrate-NitriteMCL, Single Samplemeasured 27.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  7. 2024-10-17Lead service line inventoryRPTOpen
  8. 2024-10-17Lead service line inventoryTTOpen
  9. 2024-09-01Revised Total Coliform RuleMONBack in compliance
  10. 2024-04-01Gross Beta Particle ActivityMonitoring, RegularBack in compliance
  11. 2024-04-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  12. 2024-04-01Combined UraniumMonitoring, RegularBack in compliance
  13. 2024-04-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  14. 2023-07-01Gross Beta Particle ActivityMonitoring, RegularBack in compliance
  15. 2023-07-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  16. 2023-07-01Combined UraniumMonitoring, RegularBack in compliance
  17. 2023-07-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  18. 2022-10-01Gross Beta Particle ActivityMonitoring, RegularBack in compliance
  19. 2022-10-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  20. 2022-10-01Combined UraniumMonitoring, RegularBack in compliance
  21. 2022-10-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  22. 2022-07-01Combined UraniumMCL, Averagemeasured 31.00 UG/L · limit 30.00 UG/LPeriod ended · no return to compliance on file
  23. 2022-04-01Gross Beta Particle ActivityMonitoring, RegularBack in compliance
  24. 2022-04-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  25. 2022-04-01Combined UraniumMonitoring, RegularBack in compliance
Show the other 38 entries
  1. 2022-04-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  2. 2022-01-01Nitrate-Nitrite ×3Monitoring, RegularBack in compliance
  3. 2020-01-01NitriteMonitoring, RegularBack in compliance
  4. 2019-12-05E. ColiMonitoring, Source Water (GWR)Back in compliance
  5. 2018-07-05E. ColiMonitoring, Source Water (GWR)Back in compliance
  6. 2017-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  7. 2017-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  8. 2017-07-01Gross Beta Particle ActivityMonitoring, RegularBack in compliance
  9. 2017-07-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  10. 2017-07-01Combined UraniumMonitoring, RegularBack in compliance
  11. 2017-07-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  12. 2017-04-01Nitrate-NitriteMCL, Single Samplemeasured 30.00 MG/L · limit 10.00 MG/LBack in compliance
  13. 2016-10-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LBack in compliance
  14. 2016-04-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 22.00 PCI/L · limit 15.00 PCI/LBack in compliance
  15. 2016-04-01Combined UraniumMCL, Averagemeasured 37.00 UG/L · limit 30.00 UG/LBack in compliance
  16. 2016-01-01Combined UraniumMCL, Averagemeasured 44.00 UG/L · limit 30.00 UG/LBack in compliance
  17. 2016-01-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 29.00 PCI/L · limit 15.00 PCI/LBack in compliance
  18. 2015-10-01Combined UraniumMCL, Averagemeasured 53.00 UG/L · limit 30.00 UG/LBack in compliance
  19. 2015-10-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 36.00 PCI/L · limit 15.00 PCI/LBack in compliance
  20. 2015-07-01Combined UraniumMCL, Averagemeasured 36.00 UG/L · limit 30.00 UG/LBack in compliance
  21. 2015-07-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 40.00 PCI/L · limit 15.00 PCI/LBack in compliance
  22. 2015-04-01Combined UraniumMCL, Averagemeasured 31.00 UG/L · limit 30.00 UG/LBack in compliance
  23. 2014-10-01Combined UraniumMCL, Averagemeasured 32.00 UG/L · limit 30.00 UG/LBack in compliance
  24. 2014-07-01Combined UraniumMCL, Averagemeasured 31.00 UG/L · limit 30.00 UG/LBack in compliance
  25. 2014-04-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  26. 2009-10-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  27. 2001-01-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  28. 1998-08-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  29. 1998-07-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  30. 1996-04-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  31. 1995-11-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  32. 1995-10-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  33. 1995-08-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  34. 1986-08-01Coliform (Pre-TCR)MCL, Averagemeasured 2.00 Back in compliance
  35. 1985-08-01Coliform (Pre-TCR)MCL, Averagemeasured 9.00 Back in compliance
  36. 1980-06-30Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  37. 1980-01-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  38. 1979-11-30Coliform (Pre-TCR)Monitoring, RegularBack in compliance

System details

Population served1,521
Service connections780
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityApache
EPA ZIP on file73006

Areas served

  • Caddo County

Reading this record

Apache is a community water system that draws from groundwater and serves about 1,521 people in Apache, 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.