Community Water System · PWSID AZ0413348

Green Valley MHP

Serves 190 peopleGroundwaterOwner: Public/PrivateFlagstaff, Arizona
Nothing open that measures the water, but 3 open testing or paperwork violations.

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 2002: 72 violations. 21 over the limit · 14 missed or late tests · 37 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.

21Over the limit
0Treatment lapse
14Missed or late test
37Notice or report3 open

More violations on record than 92% of active water systems in Arizona. 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 · Missed or late test: 12003 · Notice or report: 12004 · Notice or report: 12005 · Notice or report: 120052006 · Missed or late test: 12006 · Notice or report: 12007 · Notice or report: 12008 · Notice or report: 12009 · Missed or late test: 12009 · Notice or report: 12010 · Missed or late test: 12010 · Notice or report: 120102011 · Notice or report: 22011 · Notice or report: 22012 · Notice or report: 22012 · Notice or report: 22013 · Missed or late test: 12013 · Notice or report: 22013 · Notice or report: 22014 · Notice or report: 22014 · Notice or report: 22015 · Missed or late test: 42015 · Missed or late test: 42015 · Missed or late test: 42015 · Missed or late test: 42015 · Notice or report: 22015 · Notice or report: 220152016 · Missed or late test: 12016 · Notice or report: 22016 · Notice or report: 22017 · Notice or report: 12018 · Missed or late test: 22018 · Missed or late test: 22018 · Notice or report: 12019 · Over the limit: 22019 · Over the limit: 22019 · Notice or report: 22019 · Notice or report: 22020 · Over the limit: 120202021 · Over the limit: 32021 · Over the limit: 32021 · Over the limit: 32021 · Missed or late test: 12021 · Notice or report: 12022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Notice or report: 22022 · Notice or report: 22023 · Over the limit: 42023 · Over the limit: 42023 · Over the limit: 42023 · Over the limit: 42023 · Notice or report: 42023 · Notice or report: 42023 · Notice or report: 42023 · Notice or report: 42024 · Over the limit: 42024 · Over the limit: 42024 · Over the limit: 42024 · Over the limit: 42024 · Missed or late test: 12024 · Notice or report: 32024 · Notice or report: 32024 · Notice or report: 32025 · Over the limit: 32025 · Over the limit: 32025 · Over the limit: 32025 · Notice or report: 22025 · Notice or report: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
29% over the limit · 2119% missed or late test · 1451% notice or report · 37

Across Arizona, 65% of violations are missed or late tests and 5% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Arsenic2025-07-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2025-04-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2025-01-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2024-10-01 · Arsenic: measured 11.00 UG/L vs limit 10.00 UG/L (1.1×)2024-07-01 · Arsenic: measured 0.0120 MG/L vs limit 0.0100 MG/L (1.2×)2024-04-01 · Arsenic: measured 0.0190 MG/L vs limit 0.0100 MG/L (1.9×)2024-01-01 · Arsenic: measured 0.0190 MG/L vs limit 0.0100 MG/L (1.9×)2023-10-01 · Arsenic: measured 0.0310 MG/L vs limit 0.0100 MG/L (3.1×)2023-07-01 · Arsenic: measured 0.0430 MG/L vs limit 0.0100 MG/L (4.3×)2023-04-01 · Arsenic: measured 0.0430 MG/L vs limit 0.0100 MG/L (4.3×)2023-01-01 · Arsenic: measured 0.0560 MG/L vs limit 0.0100 MG/L (5.6×)2022-10-01 · Arsenic: measured 0.0540 MG/L vs limit 0.0100 MG/L (5.4×)2022-07-01 · Arsenic: measured 0.0500 MG/L vs limit 0.0100 MG/L (5.0×)2022-04-01 · Arsenic: measured 0.0480 MG/L vs limit 0.0100 MG/L (4.8×)2022-01-01 · Arsenic: measured 0.0410 MG/L vs limit 0.0100 MG/L (4.1×)2021-10-01 · Arsenic: measured 0.0260 MG/L vs limit 0.0100 MG/L (2.6×)2021-07-01 · Arsenic: measured 18.90 UG/L vs limit 10.00 UG/L (1.9×)2021-04-01 · Arsenic: measured 0.0310 MG/L vs limit 0.0100 MG/L (3.1×)2020-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2019-07-01 · Arsenic: measured 0.0110 MG/L vs limit 0.0100 MG/L (1.1×)2019-04-01 · 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 4 results on file · action level 15 ppb

0 ppb
0 ppb
0 ppb
0 ppb

Open now (3)

  1. 2025-02-27Public Notice ×2PN Violation for NPDWR ViolationOpen
  2. 2024-10-05Public NoticePN Violation for NPDWR ViolationOpen

Every violation on record

  1. 2025-07-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  2. 2025-04-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  3. 2025-02-27Public Notice ×2PN Violation for NPDWR ViolationOpen
  4. 2025-01-01ArsenicMCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  5. 2024-10-05Public NoticePN Violation for NPDWR ViolationOpen
  6. 2024-10-01ArsenicMCL, Averagemeasured 11.00 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  7. 2024-10-01Revised Total Coliform RuleMONBack in compliance
  8. 2024-07-01ArsenicMCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  9. 2024-06-09Public NoticePN Violation for NPDWR ViolationBack in compliance
  10. 2024-04-01ArsenicMCL, Averagemeasured 0.0190 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  11. 2024-02-24Public NoticePN Violation for NPDWR ViolationBack in compliance
  12. 2024-01-01ArsenicMCL, Averagemeasured 0.0190 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  13. 2023-11-03Public NoticePN Violation for NPDWR ViolationBack in compliance
  14. 2023-10-02Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  15. 2023-10-01ArsenicMCL, Averagemeasured 0.0310 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  16. 2023-07-28Public NoticePN Violation for NPDWR ViolationBack in compliance
  17. 2023-07-01ArsenicMCL, Averagemeasured 0.0430 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  18. 2023-06-08Public NoticePN Violation for NPDWR ViolationBack in compliance
  19. 2023-04-01ArsenicMCL, Averagemeasured 0.0430 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  20. 2023-01-01ArsenicMCL, Averagemeasured 0.0560 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  21. 2022-12-02Public NoticePN Violation for NPDWR ViolationBack in compliance
  22. 2022-10-01ArsenicMCL, Averagemeasured 0.0540 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  23. 2022-07-01ArsenicMCL, Averagemeasured 0.0500 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  24. 2022-04-01ArsenicMCL, Averagemeasured 0.0480 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  25. 2022-03-20Public NoticePN Violation for NPDWR ViolationBack in compliance
Show the other 46 entries
  1. 2022-01-01ArsenicMCL, Averagemeasured 0.0410 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  2. 2021-10-01ArsenicMCL, Averagemeasured 0.0260 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  3. 2021-09-01Revised Total Coliform RuleRPTBack in compliance
  4. 2021-07-01ArsenicMCL, Averagemeasured 18.90 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  5. 2021-07-01ArsenicMonitoring, RegularBack in compliance
  6. 2021-04-01ArsenicMCL, Averagemeasured 0.0310 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  7. 2020-07-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  8. 2019-08-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  9. 2019-07-01ArsenicMCL, Averagemeasured 0.0110 MG/L · limit 0.0100 MG/LBack in compliance
  10. 2019-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  11. 2019-04-01ArsenicMCL, Averagemeasured 0.0120 MG/L · limit 0.0100 MG/LBack in compliance
  12. 2018-10-01ArsenicMonitoring, RegularBack in compliance
  13. 2018-07-01ArsenicMonitoring, RegularBack in compliance
  14. 2018-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  15. 2017-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  16. 2016-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  17. 2016-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  18. 2016-04-01ArsenicMonitoring, RegularBack in compliance
  19. 2015-12-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  20. 2015-11-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  21. 2015-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  22. 2015-10-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  23. 2015-09-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  24. 2015-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  25. 2014-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  26. 2014-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  27. 2013-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  28. 2013-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  29. 2013-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  30. 2012-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  31. 2012-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  32. 2011-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  33. 2011-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  34. 2010-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  35. 2010-08-25E. ColiMonitoring, Source Water (GWR)Back in compliance
  36. 2009-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  37. 2009-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  38. 2008-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  39. 2007-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  40. 2006-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  41. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  42. 2005-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  43. 2004-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  44. 2003-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  45. 2003-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  46. 2002-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served190
Service connections76
Water sourceGroundwater
System typeCommunity Water System
OwnerPublic/Private
StatusActive
CityFlagstaff
EPA ZIP on file86004

Areas served

  • Camp Verde, Yavapai County

Reading this record

Green Valley MHP is a community water system that draws from groundwater and serves about 190 people in Flagstaff, Arizona. 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.