Community Water System · PWSID OK3000901

Canadian Co Rws & Swmd #5

Serves 316 peopleGUPOwner: Local GovernmentEl Reno, Oklahoma
Nothing open right now.

On record since 1980: 32 violations. 9 over the limit · 23 missed or late tests. Most recent began 2025-01-01.

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

9Over the limit
0Treatment lapse
23Missed or late test
0Notice or report

More violations on record than 53% 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

1980 · Over the limit: 11980 · Missed or late test: 21980 · Missed or late test: 219801982 · Missed or late test: 11983 · Over the limit: 11983 · Missed or late test: 31983 · Missed or late test: 31983 · Missed or late test: 31984 · Missed or late test: 21984 · Missed or late test: 2198519901994 · Missed or late test: 11995200020052006 · Missed or late test: 22006 · Missed or late test: 220102015 · Missed or late test: 120152016 · Missed or late test: 22016 · Missed or late test: 22017 · Missed or late test: 32017 · Missed or late test: 32017 · Missed or late test: 32019 · Missed or late test: 22019 · Missed or late test: 22020 · Over the limit: 12020 · Missed or late test: 22020 · Missed or late test: 220202023 · Over the limit: 42023 · Over the limit: 42023 · Over the limit: 42023 · Over the limit: 42024 · Over the limit: 22024 · Over the limit: 22025 · Missed or late test: 22025 · Missed or late test: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
28% over the limit · 972% missed or late test · 23

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)2024-04-01 · Trihalomethanes (TTHM): measured 0.0880 MG/L vs limit 0.0800 MG/L (1.1×)2024-01-01 · Trihalomethanes (TTHM): measured 0.0950 MG/L vs limit 0.0800 MG/L (1.2×)2023-10-01 · Trihalomethanes (TTHM): measured 0.0920 MG/L vs limit 0.0800 MG/L (1.1×)2023-07-01 · Trihalomethanes (TTHM): measured 0.0990 MG/L vs limit 0.0800 MG/L (1.2×)2023-04-01 · Trihalomethanes (TTHM): measured 0.0910 MG/L vs limit 0.0800 MG/L (1.1×)2023-01-01 · Trihalomethanes (TTHM): measured 0.0840 MG/L vs limit 0.0800 MG/L (1.1×)2020-07-01 · Trihalomethanes (TTHM): measured 0.0820 MG/L vs limit 0.0800 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 4 results on file · action level 15 ppb

3.2 ppb
0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2025-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  2. 2025-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  3. 2024-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0880 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  4. 2024-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0950 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  5. 2023-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0920 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  6. 2023-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0990 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2023-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0910 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  8. 2023-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0840 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  9. 2020-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0820 MG/L · limit 0.0800 MG/LBack in compliance
  10. 2020-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  11. 2020-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  12. 2019-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  13. 2019-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  14. 2017-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  15. 2017-01-01Revised Total Coliform RuleMONBack in compliance
  16. 2017-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  17. 2016-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  18. 2016-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  19. 2015-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  20. 2006-07-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  21. 2006-04-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  22. 1994-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  23. 1984-07-01Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  24. 1984-03-01Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  25. 1983-11-01Coliform (Pre-TCR)Monitoring, Check/Repeat/ConfirmationBack in compliance
Show the other 7 entries
  1. 1983-11-01Coliform (Pre-TCR)MCL, Averagemeasured 2.00 Back in compliance
  2. 1983-07-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  3. 1983-06-30Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  4. 1982-07-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  5. 1980-09-30Coliform (Pre-TCR)MCL, Averagemeasured 27.00 · limit 1.00 Back in compliance
  6. 1980-09-30Coliform (Pre-TCR)Monitoring, Check/Repeat/ConfirmationBack in compliance
  7. 1980-04-30Coliform (Pre-TCR)Monitoring, RegularBack in compliance

System details

Population served316
Service connections296
Water sourceGUP
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityEl Reno
EPA ZIP on file73036

Areas served

  • Canadian County

Reading this record

Canadian Co Rws & Swmd #5 is a community water system that draws from gup and serves about 316 people in El Reno, 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.