Community Water System · PWSID NM3536724

Navajo Dam Domestic Water Consumers Inc

Serves 545 peopleSurface WaterOwner: Local GovernmentNavajo Dam, New Mexico
Nothing open right now.

On record since 2004: 64 violations. 27 over the limit · 1 treatment lapse · 11 missed or late tests · 25 notices or reports. Most recent began 2023-01-01.

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

27Over the limit
1Treatment lapse
11Missed or late test
25Notice or report

More violations on record than 88% 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

2004 · Notice or report: 120052007 · Notice or report: 12010 · Treatment lapse: 12010 · Missed or late test: 22010 · Notice or report: 120102014 · Missed or late test: 52014 · Missed or late test: 52014 · Missed or late test: 52014 · Notice or report: 22015 · Over the limit: 22015 · Missed or late test: 220152016 · Over the limit: 22016 · Notice or report: 12017 · Over the limit: 22017 · Notice or report: 12018 · Over the limit: 22018 · Notice or report: 12019 · Notice or report: 22020 · Over the limit: 52020 · Over the limit: 52020 · Over the limit: 52020 · Notice or report: 32020 · Notice or report: 320202021 · Over the limit: 92021 · Over the limit: 92021 · Over the limit: 92021 · Over the limit: 92021 · Over the limit: 92021 · Missed or late test: 22021 · Notice or report: 82021 · Notice or report: 82021 · Notice or report: 82021 · Notice or report: 82022 · Over the limit: 42022 · Over the limit: 42022 · Notice or report: 42022 · Notice or report: 42023 · Over the limit: 12025
One square ≈ 2 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
42% over the limit · 272% treatment lapse · 117% missed or late test · 1139% notice or report · 25

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

How far over the limit

at the limit2×5×10×100×+Trihalomethanes (TTHM)Total Haloacetic Acids (HAA5)2023-01-01 · Trihalomethanes (TTHM): measured 0.0860 MG/L vs limit 0.0800 MG/L (1.1×)2022-10-01 · Trihalomethanes (TTHM): measured 0.0910 MG/L vs limit 0.0800 MG/L (1.1×)2022-07-01 · Trihalomethanes (TTHM): measured 0.1000 MG/L vs limit 0.0800 MG/L (1.2×)2022-04-01 · Trihalomethanes (TTHM): measured 0.0960 MG/L vs limit 0.0800 MG/L (1.2×)2022-01-01 · Trihalomethanes (TTHM): measured 0.1180 MG/L vs limit 0.0800 MG/L (1.5×)2021-10-01 · Trihalomethanes (TTHM): measured 0.1140 MG/L vs limit 0.0800 MG/L (1.4×)2021-10-01 · Trihalomethanes (TTHM): measured 0.1710 MG/L vs limit 0.0800 MG/L (2.1×)2021-10-01 · Total Haloacetic Acids (HAA5): measured 0.1290 MG/L vs limit 0.0600 MG/L (2.2×)2021-07-01 · Trihalomethanes (TTHM): measured 0.1790 MG/L vs limit 0.0800 MG/L (2.2×)2021-07-01 · Total Haloacetic Acids (HAA5): measured 0.1340 MG/L vs limit 0.0600 MG/L (2.2×)2021-04-01 · Trihalomethanes (TTHM): measured 0.1780 MG/L vs limit 0.0800 MG/L (2.2×)2021-04-01 · Total Haloacetic Acids (HAA5): measured 0.1330 MG/L vs limit 0.0600 MG/L (2.2×)2021-01-01 · Trihalomethanes (TTHM): measured 0.1780 MG/L vs limit 0.0800 MG/L (2.2×)2021-01-01 · Total Haloacetic Acids (HAA5): measured 0.1360 MG/L vs limit 0.0600 MG/L (2.3×)2020-10-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)2020-10-01 · Trihalomethanes (TTHM): measured 0.1020 MG/L vs limit 0.0800 MG/L (1.3×)2020-07-01 · Trihalomethanes (TTHM): measured 0.0980 MG/L vs limit 0.0800 MG/L (1.2×)2020-04-01 · Trihalomethanes (TTHM): measured 0.0830 MG/L vs limit 0.0800 MG/L (1.0×)2020-01-01 · Trihalomethanes (TTHM): measured 0.0810 MG/L vs limit 0.0800 MG/L (1.0×)2018-04-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)2018-01-01 · Trihalomethanes (TTHM): measured 0.0860 MG/L vs limit 0.0800 MG/L (1.1×)2017-10-01 · Trihalomethanes (TTHM): measured 0.0830 MG/L vs limit 0.0800 MG/L (1.0×)2017-07-01 · Trihalomethanes (TTHM): measured 0.0820 MG/L vs limit 0.0800 MG/L (1.0×)2016-07-01 · Trihalomethanes (TTHM): measured 0.0970 MG/L vs limit 0.0800 MG/L (1.2×)2016-04-01 · Trihalomethanes (TTHM): measured 0.0950 MG/L vs limit 0.0800 MG/L (1.2×)2015-10-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)2015-10-01 · Trihalomethanes (TTHM): measured 0.0940 MG/L vs limit 0.0800 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 1 result on file · action level 15 ppb

0 ppb

Every violation on record

  1. 2023-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0860 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  2. 2022-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0910 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  3. 2022-09-24Public NoticePN Violation for NPDWR ViolationBack in compliance
  4. 2022-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1000 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  5. 2022-07-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  6. 2022-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0960 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2022-01-28Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  8. 2022-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1180 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  9. 2021-11-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  10. 2021-11-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  11. 2021-10-30Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  12. 2021-10-01Trihalomethanes (TTHM) ×2MCL, Averagemeasured 0.1140 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  13. 2021-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.1290 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  14. 2021-08-07Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  15. 2021-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1790 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  16. 2021-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.1340 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  17. 2021-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  18. 2021-05-30Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  19. 2021-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1780 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  20. 2021-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.1330 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  21. 2021-02-28Public NoticePN Violation for NPDWR ViolationBack in compliance
  22. 2021-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1780 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  23. 2021-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.1360 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  24. 2020-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  25. 2020-10-01Trihalomethanes (TTHM) ×2MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
Show the other 32 entries
  1. 2020-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0980 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  2. 2020-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  3. 2020-05-31Public NoticePN Violation for NPDWR ViolationBack in compliance
  4. 2020-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0830 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  5. 2020-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0810 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  6. 2019-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  7. 2019-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  8. 2018-11-16Public NoticePN Violation for NPDWR ViolationBack in compliance
  9. 2018-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LBack in compliance
  10. 2018-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0860 MG/L · limit 0.0800 MG/LBack in compliance
  11. 2017-11-30Public NoticePN Violation for NPDWR ViolationBack in compliance
  12. 2017-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0830 MG/L · limit 0.0800 MG/LBack in compliance
  13. 2017-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0820 MG/L · limit 0.0800 MG/LBack in compliance
  14. 2016-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0970 MG/L · limit 0.0800 MG/LBack in compliance
  15. 2016-06-02Revised Total Coliform RuleOtherBack in compliance
  16. 2016-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0950 MG/L · limit 0.0800 MG/LBack in compliance
  17. 2015-10-01Trihalomethanes (TTHM) ×2MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LBack in compliance
  18. 2015-02-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  19. 2015-02-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  20. 2014-11-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  21. 2014-11-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  22. 2014-10-23Public NoticePN Violation for NPDWR ViolationBack in compliance
  23. 2014-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  24. 2014-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  25. 2014-03-20Public NoticePN Violation for NPDWR ViolationBack in compliance
  26. 2014-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  27. 2010-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  28. 2010-07-02Dbp Stage 2Failure Submit IDSE/Subpart V Plan RptBack in compliance
  29. 2010-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  30. 2010-04-01Surface water treatment (LT2)Failure Submit Treatment Requirement RptBack in compliance
  31. 2007-10-23Public NoticePN Violation without NPDWR ViolationBack in compliance
  32. 2004-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance

System details

Population served545
Service connections183
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityNavajo Dam
EPA ZIP on file87419

Areas served

  • Navajo Dam, San Juan County

Reading this record

Navajo Dam Domestic Water Consumers Inc is a community water system that draws from surface water and serves about 545 people in Navajo Dam, 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.