Community Water System · PWSID NM3507829

Upper Arroyo Hondo Mdwca

Serves 195 peopleGroundwaterOwner: Local GovernmentArroyo Hondo, New Mexico
4 open treatment violations.

Open for: Lead service line inventory, Groundwater Rule. EPA counts treatment-technique violations as health-based: a required protective step was not done. It is not a measurement of contamination.

On record since 1999: 86 violations. 30 over the limit · 7 treatment lapses · 15 missed or late tests · 34 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.

30Over the limit
7Treatment lapse4 open
15Missed or late test
34Notice or report2 open

More violations on record than 93% 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: 120002002 · Notice or report: 12003 · Notice or report: 12004 · Notice or report: 12005 · Notice or report: 52005 · Notice or report: 52005 · Notice or report: 52005 · Notice or report: 52005 · Notice or report: 520052006 · Notice or report: 12007 · Notice or report: 22007 · Notice or report: 22008 · Over the limit: 22008 · Over the limit: 22009 · Over the limit: 52009 · Over the limit: 52009 · Over the limit: 52009 · Over the limit: 52009 · Over the limit: 52009 · Notice or report: 32009 · Notice or report: 32009 · Notice or report: 32010 · Over the limit: 32010 · Over the limit: 32010 · Over the limit: 32010 · Notice or report: 120102011 · Over the limit: 42011 · Over the limit: 42011 · Over the limit: 42011 · Over the limit: 42012 · Over the limit: 42012 · Over the limit: 42012 · Over the limit: 42012 · Over the limit: 42012 · Notice or report: 12013 · Over the limit: 42013 · Over the limit: 42013 · Over the limit: 42013 · Over the limit: 42014 · Over the limit: 42014 · Over the limit: 42014 · Over the limit: 42014 · Over the limit: 42014 · Treatment lapse: 12014 · Missed or late test: 22014 · Missed or late test: 22014 · Notice or report: 12015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 42015 · Notice or report: 22015 · Notice or report: 220152016 · Missed or late test: 42016 · Missed or late test: 42016 · Missed or late test: 42016 · Missed or late test: 42016 · Notice or report: 12017 · Missed or late test: 32017 · Missed or late test: 32017 · Missed or late test: 32017 · Notice or report: 42017 · Notice or report: 42017 · Notice or report: 42017 · Notice or report: 42018 · Missed or late test: 22018 · Missed or late test: 22018 · Notice or report: 12019 · Missed or late test: 22019 · Missed or late test: 22020 · Notice or report: 120202021 · Notice or report: 12022 · Missed or late test: 22022 · Missed or late test: 22022 · Notice or report: 32022 · Notice or report: 32022 · Notice or report: 32023 · Treatment lapse: 52023 · Treatment lapse: 52023 · Treatment lapse: 52023 · Treatment lapse: 52023 · Treatment lapse: 52023 · Notice or report: 12024 · Treatment lapse: 12024 · Notice or report: 22024 · Notice or report: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
35% over the limit · 308% treatment lapse · 717% missed or late test · 1540% notice or report · 34

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×+Combined Uranium2015-10-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2015-07-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2015-04-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2015-01-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2014-10-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2014-07-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2014-04-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2014-01-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2013-10-01 · Combined Uranium: measured 36.00 UG/L vs limit 30.00 UG/L (1.2×)2013-07-01 · Combined Uranium: measured 36.00 UG/L vs limit 30.00 UG/L (1.2×)2013-04-01 · Combined Uranium: measured 36.00 UG/L vs limit 30.00 UG/L (1.2×)2013-01-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2012-10-01 · Combined Uranium: measured 36.00 UG/L vs limit 30.00 UG/L (1.2×)2012-07-01 · Combined Uranium: measured 36.00 UG/L vs limit 30.00 UG/L (1.2×)2012-04-01 · Combined Uranium: measured 36.00 UG/L vs limit 30.00 UG/L (1.2×)2012-01-01 · Combined Uranium: measured 36.00 UG/L vs limit 30.00 UG/L (1.2×)2011-10-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2011-07-01 · Combined Uranium: measured 34.00 UG/L vs limit 30.00 UG/L (1.1×)2011-04-01 · Combined Uranium: measured 34.00 UG/L vs limit 30.00 UG/L (1.1×)2011-01-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2010-10-01 · Combined Uranium: measured 34.00 UG/L vs limit 30.00 UG/L (1.1×)2010-07-01 · Combined Uranium: measured 35.00 UG/L vs limit 30.00 UG/L (1.2×)2010-04-01 · Combined Uranium: measured 31.00 UG/L vs limit 30.00 UG/L (1.0×)2009-07-01 · Combined Uranium: measured 32.00 UG/L vs limit 30.00 UG/L (1.1×)2009-04-01 · Combined Uranium: measured 32.00 UG/L vs limit 30.00 UG/L (1.1×)2009-04-01 · Combined Uranium: measured 31.00 UG/L vs limit 30.00 UG/L (1.0×)2009-01-01 · Combined Uranium: measured 32.00 UG/L vs limit 30.00 UG/L (1.1×)2009-01-01 · Combined Uranium: measured 31.00 UG/L vs limit 30.00 UG/L (1.0×)2008-10-01 · Combined Uranium: measured 32.00 UG/L vs limit 30.00 UG/L (1.1×)2008-10-01 · Combined Uranium: measured 33.00 UG/L vs limit 30.00 UG/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 3 results on file · action level 15 ppb

3.8 ppb
1 ppb
0.9 ppb

Open now (6)

  1. 2024-10-17Lead service line inventoryTTOpen
  2. 2024-10-17Lead service line inventoryRPTOpen
  3. 2023-02-02Groundwater Rule ×3Failure To Address DeficiencyOpen
  4. 2022-11-07Groundwater RuleFailure to Consult with StateOpen

Every violation on record

  1. 2024-10-17Lead service line inventoryTTOpen
  2. 2024-10-17Lead service line inventoryRPTOpen
  3. 2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  4. 2023-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  5. 2023-02-02Groundwater Rule ×3Failure To Address DeficiencyOpen
  6. 2023-02-02Groundwater Rule ×2Failure To Address DeficiencyBack in compliance
  7. 2022-11-07Groundwater RuleFailure to Consult with StateOpen
  8. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  9. 2022-06-03Public NoticePN Violation for NPDWR ViolationBack in compliance
  10. 2022-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  11. 2022-04-01Revised Total Coliform RuleMONBack in compliance
  12. 2021-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  13. 2020-04-23Public NoticePN Violation for NPDWR ViolationBack in compliance
  14. 2019-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  15. 2019-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  16. 2018-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  17. 2018-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  18. 2018-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  19. 2017-12-02Public NoticePN Violation for NPDWR ViolationBack in compliance
  20. 2017-10-26Public NoticePN Violation for NPDWR ViolationBack in compliance
  21. 2017-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  22. 2017-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  23. 2017-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  24. 2017-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  25. 2017-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
Show the other 54 entries
  1. 2016-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  2. 2016-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  3. 2016-07-01Revised Total Coliform RuleMONBack in compliance
  4. 2016-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  5. 2016-06-01Revised Total Coliform RuleMONBack in compliance
  6. 2015-10-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  7. 2015-07-27Public NoticePN Violation for NPDWR ViolationBack in compliance
  8. 2015-07-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  9. 2015-04-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  10. 2015-03-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  11. 2015-01-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  12. 2014-10-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  13. 2014-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  14. 2014-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  15. 2014-07-24Groundwater RuleFailure To Address DeficiencyBack in compliance
  16. 2014-07-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  17. 2014-04-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  18. 2014-01-24Public NoticePN Violation for NPDWR ViolationBack in compliance
  19. 2014-01-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  20. 2013-10-01Combined UraniumMCL, Averagemeasured 36.00 UG/L · limit 30.00 UG/LBack in compliance
  21. 2013-07-01Combined UraniumMCL, Averagemeasured 36.00 UG/L · limit 30.00 UG/LBack in compliance
  22. 2013-04-01Combined UraniumMCL, Averagemeasured 36.00 UG/L · limit 30.00 UG/LBack in compliance
  23. 2013-01-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  24. 2012-10-01Combined UraniumMCL, Averagemeasured 36.00 UG/L · limit 30.00 UG/LBack in compliance
  25. 2012-07-01Combined UraniumMCL, Averagemeasured 36.00 UG/L · limit 30.00 UG/LBack in compliance
  26. 2012-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  27. 2012-04-01Combined UraniumMCL, Averagemeasured 36.00 UG/L · limit 30.00 UG/LBack in compliance
  28. 2012-01-01Combined UraniumMCL, Averagemeasured 36.00 UG/L · limit 30.00 UG/LBack in compliance
  29. 2011-10-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  30. 2011-07-01Combined UraniumMCL, Averagemeasured 34.00 UG/L · limit 30.00 UG/LBack in compliance
  31. 2011-04-01Combined UraniumMCL, Averagemeasured 34.00 UG/L · limit 30.00 UG/LBack in compliance
  32. 2011-01-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  33. 2010-10-01Combined UraniumMCL, Averagemeasured 34.00 UG/L · limit 30.00 UG/LBack in compliance
  34. 2010-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  35. 2010-07-01Combined UraniumMCL, Averagemeasured 35.00 UG/L · limit 30.00 UG/LBack in compliance
  36. 2010-04-01Combined UraniumMCL, Averagemeasured 31.00 UG/L · limit 30.00 UG/LBack in compliance
  37. 2009-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  38. 2009-09-06Public NoticePN Violation for NPDWR ViolationBack in compliance
  39. 2009-07-03Public NoticePN Violation for NPDWR ViolationBack in compliance
  40. 2009-07-01Combined UraniumMCL, Averagemeasured 32.00 UG/L · limit 30.00 UG/LBack in compliance
  41. 2009-04-01Combined Uranium ×2MCL, Averagemeasured 32.00 UG/L · limit 30.00 UG/LBack in compliance
  42. 2009-01-01Combined Uranium ×2MCL, Averagemeasured 32.00 UG/L · limit 30.00 UG/LBack in compliance
  43. 2008-10-01Combined Uranium ×2MCL, Averagemeasured 32.00 UG/L · limit 30.00 UG/LBack in compliance
  44. 2007-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  45. 2007-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  46. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  47. 2005-11-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  48. 2005-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  49. 2005-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  50. 2005-02-21Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  51. 2004-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  52. 2003-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  53. 2002-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  54. 1999-10-19Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served195
Service connections65
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityArroyo Hondo
EPA ZIP on file87513

Areas served

  • Arroyo Hondo, Taos County

Reading this record

Upper Arroyo Hondo Mdwca is a community water system that draws from groundwater and serves about 195 people in Arroyo Hondo, 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.