Community Water System · PWSID OK3006109

Pittsburg Co. Rwd #6 (Alderson)

Serves 300 peopleSurface Water PurchasedOwner: Local GovernmentMcalester, Oklahoma
Nothing open that measures the water, but 1 open testing or paperwork violation.

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 1980: 28 violations. 13 over the limit · 1 treatment lapse · 11 missed or late tests · 3 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
1Treatment lapse
11Missed or late test1 open
3Notice or report

More violations on record than 49% 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 · Missed or late test: 119801982 · Missed or late test: 11984 · Missed or late test: 119851986 · Over the limit: 11988 · Missed or late test: 21988 · Missed or late test: 21989 · Over the limit: 11989 · Missed or late test: 119901992 · Missed or late test: 119951997 · Missed or late test: 1200020052010 · Missed or late test: 120102012 · Notice or report: 12014 · Notice or report: 120152016 · Over the limit: 32016 · Over the limit: 32016 · Over the limit: 32017 · Over the limit: 22017 · Over the limit: 22020 · Missed or late test: 120202021 · Over the limit: 22021 · Over the limit: 22022 · Over the limit: 22022 · Over the limit: 22023 · Over the limit: 12024 · Treatment lapse: 12024 · Notice or report: 12025 · Over the limit: 12025 · Missed or late test: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
46% over the limit · 134% treatment lapse · 139% missed or late test · 1111% notice or report · 3

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×+Total Haloacetic Acids (HAA5)Trihalomethanes (TTHM)2025-07-01 · Total Haloacetic Acids (HAA5): measured 0.0620 MG/L vs limit 0.0600 MG/L (1.0×)2023-04-01 · Trihalomethanes (TTHM): measured 0.0810 MG/L vs limit 0.0800 MG/L (1.0×)2022-04-01 · Trihalomethanes (TTHM): measured 0.0930 MG/L vs limit 0.0800 MG/L (1.2×)2022-01-01 · Trihalomethanes (TTHM): measured 0.0910 MG/L vs limit 0.0800 MG/L (1.1×)2021-10-01 · Trihalomethanes (TTHM): measured 0.0890 MG/L vs limit 0.0800 MG/L (1.1×)2021-07-01 · Trihalomethanes (TTHM): measured 0.0870 MG/L vs limit 0.0800 MG/L (1.1×)2017-04-01 · Total Haloacetic Acids (HAA5): measured 0.0680 MG/L vs limit 0.0600 MG/L (1.1×)2017-01-01 · Total Haloacetic Acids (HAA5): measured 0.0720 MG/L vs limit 0.0600 MG/L (1.2×)2016-10-01 · Total Haloacetic Acids (HAA5): measured 0.0650 MG/L vs limit 0.0600 MG/L (1.1×)2016-07-01 · Total Haloacetic Acids (HAA5): measured 0.0670 MG/L vs limit 0.0600 MG/L (1.1×)2016-04-01 · Total Haloacetic Acids (HAA5): measured 0.0620 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

8 ppb
2.9 ppb
1.2 ppb

Open now (1)

  1. 2025-09-29Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptOpen

Every violation on record

  1. 2025-09-29Total Haloacetic Acids (HAA5)Failure Submit IDSE/Subpart V Plan RptOpen
  2. 2025-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0620 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  3. 2024-10-17Lead service line inventoryRPTBack in compliance
  4. 2024-10-17Lead service line inventoryTTBack in compliance
  5. 2023-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0810 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  6. 2022-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0930 MG/L · limit 0.0800 MG/LBack in compliance
  7. 2022-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0910 MG/L · limit 0.0800 MG/LBack in compliance
  8. 2021-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0890 MG/L · limit 0.0800 MG/LBack in compliance
  9. 2021-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0870 MG/L · limit 0.0800 MG/LBack in compliance
  10. 2020-12-30Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  11. 2017-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0680 MG/L · limit 0.0600 MG/LBack in compliance
  12. 2017-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0720 MG/L · limit 0.0600 MG/LBack in compliance
  13. 2016-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0650 MG/L · limit 0.0600 MG/LBack in compliance
  14. 2016-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0670 MG/L · limit 0.0600 MG/LBack in compliance
  15. 2016-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0620 MG/L · limit 0.0600 MG/LBack in compliance
  16. 2014-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  17. 2012-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  18. 2010-01-01Dbp Stage 2Failure Submit IDSE/Subpart V Plan RptBack in compliance
  19. 1997-07-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  20. 1992-08-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  21. 1989-06-01Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  22. 1989-05-01Coliform (Pre-TCR)MCL, Averagemeasured 51.00 Back in compliance
  23. 1988-07-01Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  24. 1988-03-01Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  25. 1986-10-01Coliform (Pre-TCR)MCL, Averagemeasured 10.00 Back in compliance
Show the other 3 entries
  1. 1984-01-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  2. 1982-01-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance
  3. 1980-01-31Coliform (Pre-TCR)Monitoring, RegularBack in compliance

System details

Population served300
Service connections439
Water sourceSurface Water Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityMcalester
EPA ZIP on file74501

Areas served

  • Pittsburg County

Reading this record

Pittsburg Co. Rwd #6 (Alderson) is a community water system that draws from surface water purchased and serves about 300 people in Mcalester, 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.