Community Water System · PWSID GA1890001

Thomson-Mcduffie Co W&S Comm

Serves 21,312 peopleSurface WaterOwner: Local GovernmentThomson, Georgia
Nothing open right now.

On record since 2002: 33 violations. 16 over the limit · 4 missed or late tests · 13 notices or reports. Most recent began 2025-07-01.

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

16Over the limit
0Treatment lapse
4Missed or late test
13Notice or report

More violations on record than 96% of active water systems in Georgia. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2002 · Notice or report: 12003 · Notice or report: 120052007 · Notice or report: 12009 · Missed or late test: 120102011 · Notice or report: 12015 · Over the limit: 32015 · Over the limit: 32015 · Over the limit: 320152016 · Over the limit: 12020 · Notice or report: 120202021 · Notice or report: 12022 · Over the limit: 32022 · Over the limit: 32022 · Over the limit: 32022 · Notice or report: 22022 · Notice or report: 22023 · Over the limit: 22023 · Over the limit: 22023 · Notice or report: 42023 · Notice or report: 42023 · Notice or report: 42023 · Notice or report: 42024 · Over the limit: 32024 · Over the limit: 32024 · Over the limit: 32024 · Missed or late test: 12024 · Notice or report: 12025 · Over the limit: 42025 · Over the limit: 42025 · Over the limit: 42025 · Over the limit: 42025 · 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.
48% over the limit · 1612% missed or late test · 439% notice or report · 13

Across Georgia, 52% of violations are missed or late tests and 7% 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 0.1020 MG/L vs limit 0.0800 MG/L (1.3×)2025-07-01 · Total Haloacetic Acids (HAA5): measured 0.0610 MG/L vs limit 0.0600 MG/L (1.0×)2025-04-01 · Trihalomethanes (TTHM): measured 0.1040 MG/L vs limit 0.0800 MG/L (1.3×)2025-01-01 · Trihalomethanes (TTHM): measured 0.0950 MG/L vs limit 0.0800 MG/L (1.2×)2024-10-01 · Trihalomethanes (TTHM): measured 0.0900 MG/L vs limit 0.0800 MG/L (1.1×)2024-07-01 · Trihalomethanes (TTHM): measured 0.0920 MG/L vs limit 0.0800 MG/L (1.1×)2024-04-01 · Trihalomethanes (TTHM): measured 0.0920 MG/L vs limit 0.0800 MG/L (1.1×)2023-07-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)2023-04-01 · Trihalomethanes (TTHM): measured 0.0910 MG/L vs limit 0.0800 MG/L (1.1×)2022-10-01 · Trihalomethanes (TTHM): measured 0.0990 MG/L vs limit 0.0800 MG/L (1.2×)2022-07-01 · Trihalomethanes (TTHM): measured 0.0950 MG/L vs limit 0.0800 MG/L (1.2×)2022-04-01 · Trihalomethanes (TTHM): measured 0.0900 MG/L vs limit 0.0800 MG/L (1.1×)2016-01-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)2015-10-01 · Trihalomethanes (TTHM): measured 0.0820 MG/L vs limit 0.0800 MG/L (1.0×)2015-07-01 · Trihalomethanes (TTHM): measured 0.0840 MG/L vs limit 0.0800 MG/L (1.1×)2015-04-01 · Trihalomethanes (TTHM): measured 0.0860 MG/L vs limit 0.0800 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 4 results on file · action level 15 ppb

2.8 ppb
2.5 ppb
1.3 ppb
0.9 ppb

Every violation on record

  1. 2025-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1020 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  2. 2025-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0610 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  3. 2025-06-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  4. 2025-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1040 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  5. 2025-03-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  6. 2025-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0950 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2024-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0900 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  8. 2024-09-01Revised Total Coliform RuleMONBack in compliance
  9. 2024-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0920 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  10. 2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  11. 2024-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0920 MG/L · limit 0.0800 MG/LBack in compliance
  12. 2023-10-01Revised Total Coliform RuleRPTBack in compliance
  13. 2023-09-01Revised Total Coliform RuleRPTBack in compliance
  14. 2023-07-01Revised Total Coliform RuleRPTBack in compliance
  15. 2023-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LBack in compliance
  16. 2023-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0910 MG/L · limit 0.0800 MG/LBack in compliance
  17. 2023-03-01Revised Total Coliform RuleRPTBack in compliance
  18. 2022-12-08Public NoticePN Violation for NPDWR ViolationBack in compliance
  19. 2022-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0990 MG/L · limit 0.0800 MG/LBack in compliance
  20. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  21. 2022-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0950 MG/L · limit 0.0800 MG/LBack in compliance
  22. 2022-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0900 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  23. 2021-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  24. 2020-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  25. 2016-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LBack in compliance
Show the other 8 entries
  1. 2015-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0820 MG/L · limit 0.0800 MG/LBack in compliance
  2. 2015-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0840 MG/L · limit 0.0800 MG/LBack in compliance
  3. 2015-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0860 MG/L · limit 0.0800 MG/LBack in compliance
  4. 2011-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  5. 2009-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  6. 2007-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  7. 2003-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  8. 2002-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served21,312
Service connections7,455
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityThomson
EPA ZIP on file30824

Areas served

  • Thomson, Mcduffie County

Reading this record

Thomson-Mcduffie Co W&S Comm is a community water system that draws from surface water and serves about 21,312 people in Thomson, Georgia. 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.