Community Water System · PWSID NM3571119

Twin Forks Mdwca

Serves 1,274 peopleGroundwaterOwner: Local GovernmentMayhill, New Mexico
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 1999: 68 violations. 3 treatment lapses · 51 missed or late tests · 14 notices or reports. Most recent began 2025-07-01.

None of them is a measurement of contaminated water.

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

0Over the limit
3Treatment lapse
51Missed or late test1 open
14Notice or report

More violations on record than 89% of active water systems in New Mexico. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1999 · Notice or report: 120002005 · Missed or late test: 120052006 · Missed or late test: 22007 · Missed or late test: 22008 · Treatment lapse: 22008 · Missed or late test: 22008 · Notice or report: 12009 · Missed or late test: 22010 · Treatment lapse: 12010 · Missed or late test: 32010 · Notice or report: 120102012 · Notice or report: 12014 · Missed or late test: 332014 · Missed or late test: 332014 · Missed or late test: 332014 · Missed or late test: 332014 · Missed or late test: 332014 · Missed or late test: 332014 · Missed or late test: 332014 · Missed or late test: 332014 · Missed or late test: 332014 · Missed or late test: 332014 · Missed or late test: 332014 · Notice or report: 12015 · Notice or report: 320152016 · Missed or late test: 22016 · Notice or report: 22017 · Notice or report: 12019 · Missed or late test: 22020 · Missed or late test: 220202021 · Notice or report: 12022 · Notice or report: 12025 · Notice or report: 12025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
4% treatment lapse · 375% missed or late test · 5121% notice or report · 14

Across New Mexico, 40% of violations are missed or late tests and 6% are water over a limit.

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 1 result on file · action level 15 ppb

3.6 ppb

Open now (1)

  1. 2010-07-02Dbp Stage 2Failure Submit IDSE/Subpart V Plan RptOpen

Every violation on record

  1. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  2. 2022-06-03Public NoticePN Violation for NPDWR ViolationBack in compliance
  3. 2021-11-20Public NoticePN Violation for NPDWR ViolationBack in compliance
  4. 2020-05-01Revised Total Coliform RuleMONBack in compliance
  5. 2020-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  6. 2019-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  7. 2019-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  8. 2017-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  9. 2016-12-04Public NoticePN Violation for NPDWR ViolationBack in compliance
  10. 2016-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  11. 2016-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  12. 2016-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  13. 2015-11-07Public NoticePN Violation for NPDWR ViolationBack in compliance
  14. 2015-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  15. 2015-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  16. 2014-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  17. 2014-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  18. 2014-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  19. 2014-01-01ChlordaneMonitoring, RegularPeriod ended · no return to compliance on file
  20. 2014-01-01Ethylene DibromideMonitoring, RegularPeriod ended · no return to compliance on file
  21. 2014-01-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  22. 2014-01-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularPeriod ended · no return to compliance on file
  23. 2014-01-01PentachlorophenolMonitoring, RegularPeriod ended · no return to compliance on file
  24. 2014-01-01Benzo(a)pyreneMonitoring, RegularPeriod ended · no return to compliance on file
  25. 2014-01-01HexachlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
Show the other 43 entries
  1. 2014-01-012, 4, 5-TpMonitoring, RegularPeriod ended · no return to compliance on file
  2. 2014-01-012, 4-DMonitoring, RegularPeriod ended · no return to compliance on file
  3. 2014-01-01Heptachlor epoxideMonitoring, RegularPeriod ended · no return to compliance on file
  4. 2014-01-01HeptachlorMonitoring, RegularPeriod ended · no return to compliance on file
  5. 2014-01-01LassoMonitoring, RegularPeriod ended · no return to compliance on file
  6. 2014-01-01AtrazineMonitoring, RegularPeriod ended · no return to compliance on file
  7. 2014-01-01CarbofuranMonitoring, RegularPeriod ended · no return to compliance on file
  8. 2014-01-01HexachlorocyclopentadieneMonitoring, RegularPeriod ended · no return to compliance on file
  9. 2014-01-01DinosebMonitoring, RegularPeriod ended · no return to compliance on file
  10. 2014-01-01PicloramMonitoring, RegularPeriod ended · no return to compliance on file
  11. 2014-01-01Di(2-ethylhexyl) phthalateMonitoring, RegularPeriod ended · no return to compliance on file
  12. 2014-01-01SimazineMonitoring, RegularPeriod ended · no return to compliance on file
  13. 2014-01-01OxamylMonitoring, RegularPeriod ended · no return to compliance on file
  14. 2014-01-01Di(2-ethylhexyl) adipateMonitoring, RegularPeriod ended · no return to compliance on file
  15. 2014-01-01GlyphosateMonitoring, RegularPeriod ended · no return to compliance on file
  16. 2014-01-01EndothallMonitoring, RegularPeriod ended · no return to compliance on file
  17. 2014-01-01DiquatMonitoring, RegularPeriod ended · no return to compliance on file
  18. 2014-01-01DalaponMonitoring, RegularPeriod ended · no return to compliance on file
  19. 2014-01-01ToxapheneMonitoring, RegularPeriod ended · no return to compliance on file
  20. 2014-01-01MethoxychlorMonitoring, RegularPeriod ended · no return to compliance on file
  21. 2014-01-01Bhc-GammaMonitoring, RegularPeriod ended · no return to compliance on file
  22. 2014-01-01EndrinMonitoring, RegularPeriod ended · no return to compliance on file
  23. 2014-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  24. 2014-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  25. 2012-11-23Public NoticePN Violation for NPDWR ViolationBack in compliance
  26. 2010-09-08Groundwater RuleFailure To Address DeficiencyBack in compliance
  27. 2010-07-02Dbp Stage 2Failure Submit IDSE/Subpart V Plan RptOpen
  28. 2010-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  29. 2010-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  30. 2010-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  31. 2009-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  32. 2009-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  33. 2008-11-06Public NoticePN Violation for NPDWR ViolationBack in compliance
  34. 2008-07-25Surface water treatment (SWTR)Failure to Filter (SWTR)Back in compliance
  35. 2008-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  36. 2008-07-01Surface water treatment (SWTR)Failure to Filter (SWTR)Back in compliance
  37. 2008-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  38. 2007-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  39. 2007-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  40. 2006-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  41. 2006-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  42. 2005-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  43. 1999-10-19Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served1,274
Service connections479
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityMayhill
EPA ZIP on file88339

Areas served

  • Mayhill, Otero County

Reading this record

Twin Forks Mdwca is a community water system that draws from groundwater and serves about 1,274 people in Mayhill, New Mexico. 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.