Community Water System · PWSID OK2002806

Thirsty Water Corp

Serves 81 peopleGroundwaterOwner: Local GovernmentHollis, Oklahoma
Nothing open right now.

On record since 1979: 66 violations. 34 over the limit · 28 missed or late tests · 4 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.

34Over the limit
0Treatment lapse
28Missed or late test
4Notice or report

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: 31979 · Missed or late test: 31979 · Missed or late test: 31980 · Missed or late test: 21980 · Missed or late test: 219801983 · Missed or late test: 1198519901993 · Missed or late test: 119951998 · Missed or late test: 1200020052006 · Notice or report: 12007 · Notice or report: 12008 · Notice or report: 12010 · Over the limit: 22010 · Over the limit: 220102013 · Notice or report: 12014 · Over the limit: 12015 · Over the limit: 120152016 · Missed or late test: 52016 · Missed or late test: 52016 · Missed or late test: 52016 · Missed or late test: 52016 · Missed or late test: 52017 · Over the limit: 12018 · Over the limit: 52018 · Over the limit: 52018 · Over the limit: 52018 · Over the limit: 52018 · Over the limit: 52019 · 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: 42021 · 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: 42022 · Missed or late test: 42022 · Missed or late test: 42022 · Missed or late test: 42023 · Over the limit: 32023 · Over the limit: 32023 · Over the limit: 32024 · Over the limit: 32024 · Over the limit: 32024 · Over the limit: 32024 · Missed or late test: 92024 · Missed or late test: 92024 · Missed or late test: 92024 · Missed or late test: 92024 · Missed or late test: 92024 · Missed or late test: 92024 · Missed or late test: 92024 · Missed or late test: 92024 · Missed or late test: 92025 · Over the limit: 22025 · Over the limit: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
52% over the limit · 3442% missed or late test · 286% notice or report · 4

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-Nitrite2025-04-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2025-01-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2024-10-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2024-07-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2024-01-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2023-10-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2023-07-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2023-04-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2022-10-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2022-07-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2022-04-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2022-01-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2021-10-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2021-07-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2021-04-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2021-01-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2020-10-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2020-07-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2020-04-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2020-01-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2019-10-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2019-07-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2019-04-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2019-01-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2018-10-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2018-07-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2018-04-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2018-01-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2018-01-01 · Nitrate-Nitrite: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)2017-10-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2015-10-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2014-10-01 · Nitrate-Nitrite: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)2010-10-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 MG/L (1.1×)2010-01-01 · Nitrate-Nitrite: measured 11.00 MG/L vs limit 10.00 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 11 results on file · action level 15 ppb

12.1 ppb
0.9 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2025-04-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  2. 2025-01-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  3. 2024-10-012, 4-DMonitoring, RegularPeriod ended · no return to compliance on file
  4. 2024-10-01GlyphosateMonitoring, RegularPeriod ended · no return to compliance on file
  5. 2024-10-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  6. 2024-07-012, 4-DMonitoring, RegularBack in compliance
  7. 2024-07-01GlyphosateMonitoring, RegularBack in compliance
  8. 2024-07-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  9. 2024-04-012, 4-DMonitoring, RegularBack in compliance
  10. 2024-04-01GlyphosateMonitoring, RegularBack in compliance
  11. 2024-04-01Nitrate-NitriteMonitoring, RegularBack in compliance
  12. 2024-01-012, 4-DMonitoring, RegularPeriod ended · no return to compliance on file
  13. 2024-01-01GlyphosateMonitoring, RegularPeriod ended · no return to compliance on file
  14. 2024-01-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  15. 2023-10-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  16. 2023-07-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  17. 2023-04-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  18. 2022-10-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  19. 2022-09-01Revised Total Coliform RuleMONBack in compliance
  20. 2022-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  21. 2022-07-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  22. 2022-06-01Revised Total Coliform RuleMONBack in compliance
  23. 2022-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  24. 2022-04-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LBack in compliance
  25. 2022-01-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LBack in compliance
Show the other 41 entries
  1. 2021-10-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LBack in compliance
  2. 2021-09-01Revised Total Coliform RuleMONBack in compliance
  3. 2021-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  4. 2021-07-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LBack in compliance
  5. 2021-04-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LBack in compliance
  6. 2021-01-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LBack in compliance
  7. 2020-10-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LBack in compliance
  8. 2020-07-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LBack in compliance
  9. 2020-04-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LBack in compliance
  10. 2020-01-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LBack in compliance
  11. 2019-10-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LBack in compliance
  12. 2019-07-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LBack in compliance
  13. 2019-04-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LBack in compliance
  14. 2019-01-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LBack in compliance
  15. 2018-10-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LBack in compliance
  16. 2018-07-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LBack in compliance
  17. 2018-04-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LBack in compliance
  18. 2018-01-01Nitrate-NitriteMCL, Averagemeasured 12.00 MG/L · limit 10.00 MG/LBack in compliance
  19. 2018-01-01Nitrate-NitriteMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LBack in compliance
  20. 2017-10-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LBack in compliance
  21. 2016-07-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  22. 2016-07-01Gross Beta Particle ActivityMonitoring, RegularBack in compliance
  23. 2016-07-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  24. 2016-07-01Combined UraniumMonitoring, RegularBack in compliance
  25. 2016-07-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  26. 2015-10-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LBack in compliance
  27. 2014-10-01Nitrate-NitriteMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LBack in compliance
  28. 2013-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  29. 2010-10-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LBack in compliance
  30. 2010-01-01Nitrate-NitriteMCL, Single Samplemeasured 11.00 MG/L · limit 10.00 MG/LBack in compliance
  31. 2008-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  32. 2007-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  33. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  34. 1998-07-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  35. 1993-06-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  36. 1983-02-28Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  37. 1980-04-30Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  38. 1980-01-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  39. 1979-12-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  40. 1979-11-30Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  41. 1979-10-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance

System details

Population served81
Service connections176
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityHollis
EPA ZIP on file73550

Areas served

  • Greer County

Reading this record

Thirsty Water Corp is a community water system that draws from groundwater and serves about 81 people in Hollis, 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.