Community Water System · PWSID TX1550037

M S Wsc

Serves 744 peopleGroundwaterOwner: Local GovernmentRiesel, Texas
Nothing open right now.

On record since 2007: 84 violations. 54 over the limit · 1 treatment lapse · 10 missed or late tests · 19 notices or reports. Most recent began 2024-10-17.

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

54Over the limit
1Treatment lapse
10Missed or late test
19Notice or report

More violations on record than 95% of active water systems in Texas. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

20052007 · Notice or report: 120102011 · Notice or report: 12012 · Missed or late test: 12012 · Notice or report: 52012 · Notice or report: 52012 · Notice or report: 52012 · Notice or report: 52012 · Notice or report: 52013 · Over the limit: 22013 · Over the limit: 22014 · Over the limit: 42014 · Over the limit: 42014 · Over the limit: 42014 · Over the limit: 42015 · Over the limit: 72015 · Over the limit: 72015 · Over the limit: 72015 · Over the limit: 72015 · Over the limit: 72015 · Over the limit: 72015 · Over the limit: 72015 · Missed or late test: 12015 · Notice or report: 32015 · Notice or report: 32015 · Notice or report: 320152016 · Over the limit: 62016 · Over the limit: 62016 · Over the limit: 62016 · Over the limit: 62016 · Over the limit: 62016 · Over the limit: 62016 · Missed or late test: 12016 · Notice or report: 22016 · Notice or report: 22017 · Over the limit: 52017 · Over the limit: 52017 · Over the limit: 52017 · Over the limit: 52017 · Over the limit: 52018 · Over the limit: 62018 · Over the limit: 62018 · Over the limit: 62018 · Over the limit: 62018 · Over the limit: 62018 · Over the limit: 62018 · Notice or report: 32018 · Notice or report: 32018 · Notice or report: 32019 · Over the limit: 12019 · Missed or late test: 12019 · Notice or report: 12020 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 420202021 · Over the limit: 62021 · Over the limit: 62021 · Over the limit: 62021 · Over the limit: 62021 · Over the limit: 62021 · Over the limit: 62021 · Missed or late test: 12022 · Over the limit: 72022 · Over the limit: 72022 · Over the limit: 72022 · Over the limit: 72022 · Over the limit: 72022 · Over the limit: 72022 · Over the limit: 72022 · Missed or late test: 52022 · Missed or late test: 52022 · Missed or late test: 52022 · Missed or late test: 52022 · Missed or late test: 52023 · Over the limit: 32023 · Over the limit: 32023 · Over the limit: 32024 · Over the limit: 32024 · Over the limit: 32024 · Over the limit: 32024 · Treatment lapse: 12024 · Notice or report: 32024 · Notice or report: 32024 · Notice or report: 32025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
64% over the limit · 541% treatment lapse · 112% missed or late test · 1023% notice or report · 19

Across Texas, 60% of violations are missed or late tests and 10% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Arsenic2024-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2024-04-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2024-01-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2023-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2023-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2023-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2022-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2022-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2022-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2022-04-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2022-04-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2022-01-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2022-01-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2021-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2021-10-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2021-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2021-07-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2021-04-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2021-01-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2020-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2020-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2020-04-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2020-01-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2019-01-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2018-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2018-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2018-04-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2018-04-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2018-01-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2018-01-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2017-10-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2017-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2017-07-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2017-04-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2017-01-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2016-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2016-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2016-04-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2016-04-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2016-01-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2016-01-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2015-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2015-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2015-07-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2015-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2015-04-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2015-04-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2015-01-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2014-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2014-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2014-04-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2014-01-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2013-10-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2013-07-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/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 2 results on file · action level 15 ppb

0 ppb
0 ppb

Every violation on record

  1. 2024-10-17Lead service line inventoryRPTBack in compliance
  2. 2024-10-17Lead service line inventoryTTBack in compliance
  3. 2024-07-09Public NoticePN Violation for NPDWR ViolationBack in compliance
  4. 2024-07-02Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  5. 2024-07-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  6. 2024-04-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  7. 2024-01-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  8. 2023-10-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  9. 2023-10-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  10. 2023-07-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  11. 2022-10-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  12. 2022-07-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  13. 2022-07-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  14. 2022-04-01ArsenicMCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  15. 2022-04-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  16. 2022-01-01AldicarbMonitoring, RegularPeriod ended · no return to compliance on file
  17. 2022-01-01CarbofuranMonitoring, RegularPeriod ended · no return to compliance on file
  18. 2022-01-01Aldicarb sulfoneMonitoring, RegularPeriod ended · no return to compliance on file
  19. 2022-01-01Aldicarb sulfoxideMonitoring, RegularPeriod ended · no return to compliance on file
  20. 2022-01-01OxamylMonitoring, RegularPeriod ended · no return to compliance on file
  21. 2022-01-01Arsenic ×2MCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  22. 2021-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  23. 2021-10-01Arsenic ×2MCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  24. 2021-07-01Arsenic ×2MCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  25. 2021-04-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
Show the other 46 entries
  1. 2021-01-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  2. 2020-10-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  3. 2020-07-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  4. 2020-04-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  5. 2020-01-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  6. 2019-12-30Lead and Copper RuleLead Consumer NoticeBack in compliance
  7. 2019-07-22Public NoticePN Violation for NPDWR ViolationBack in compliance
  8. 2019-01-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  9. 2018-10-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  10. 2018-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  11. 2018-07-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  12. 2018-04-01Arsenic ×2MCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  13. 2018-03-20Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  14. 2018-01-01Arsenic ×2MCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  15. 2017-10-01Arsenic ×2MCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LBack in compliance
  16. 2017-07-01ArsenicMCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LBack in compliance
  17. 2017-04-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  18. 2017-01-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  19. 2016-12-30Lead and Copper RuleLead Consumer NoticeBack in compliance
  20. 2016-10-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  21. 2016-07-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  22. 2016-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  23. 2016-04-01Arsenic ×2MCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  24. 2016-02-08Public NoticePN Violation for NPDWR ViolationBack in compliance
  25. 2016-01-01Arsenic ×2MCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  26. 2015-10-01Arsenic ×2MCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  27. 2015-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  28. 2015-09-04Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  29. 2015-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  30. 2015-07-01Arsenic ×2MCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LBack in compliance
  31. 2015-04-01Arsenic ×2MCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LBack in compliance
  32. 2015-01-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  33. 2014-10-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  34. 2014-07-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  35. 2014-04-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  36. 2014-01-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  37. 2013-10-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  38. 2013-07-01ArsenicMCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LBack in compliance
  39. 2012-11-13Public NoticePN Violation for NPDWR ViolationBack in compliance
  40. 2012-10-10Public NoticePN Violation for NPDWR ViolationBack in compliance
  41. 2012-10-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  42. 2012-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  43. 2012-06-28E. ColiMonitoring, Source Water (GWR)Back in compliance
  44. 2012-06-13Groundwater RuleFailure to Notify Other PWSBack in compliance
  45. 2011-11-17Public NoticePN Violation for NPDWR ViolationBack in compliance
  46. 2007-11-01Public NoticePN Violation for NPDWR ViolationBack in compliance

System details

Population served744
Service connections248
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityRiesel
EPA ZIP on file76682-3312

Areas served

  • Mclennan County

Reading this record

M S Wsc is a community water system that draws from groundwater and serves about 744 people in Riesel, Texas. 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.