Transient Non-Community · PWSID AZ0409053

303 Dwid

Serves 75 peopleGroundwaterOwner: PrivateSt Johns, Arizona
4 open treatment violations.

Open for: 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 2003: 26 violations. 5 treatment lapses · 11 missed or late tests · 10 notices or reports. Most recent began 2025-07-22.

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
5Treatment lapse4 open
11Missed or late test1 open
10Notice or report5 open

More violations on record than 72% 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

2003 · Notice or report: 120052007 · Notice or report: 12008 · Notice or report: 12009 · Notice or report: 120102013 · Missed or late test: 12014 · Missed or late test: 12015 · Missed or late test: 120152016 · Missed or late test: 32016 · Missed or late test: 32016 · Missed or late test: 32017 · Missed or late test: 12018 · Missed or late test: 12018 · Notice or report: 12020 · Missed or late test: 12020 · Notice or report: 120202022 · Treatment lapse: 12022 · Missed or late test: 12022 · Notice or report: 22022 · Notice or report: 22023 · Notice or report: 22023 · Notice or report: 22024 · Missed or late test: 12025 · Treatment lapse: 42025 · Treatment lapse: 42025 · Treatment lapse: 42025 · Treatment lapse: 42025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
19% treatment lapse · 542% missed or late test · 1138% notice or report · 10

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

Open now (10)

  1. 2025-07-22Groundwater Rule ×2Failure To Address DeficiencyOpen
  2. 2025-07-07Groundwater Rule ×2Failure To Address DeficiencyOpen
  3. 2023-10-15Public NoticePN Violation for NPDWR ViolationOpen
  4. 2023-02-17Public NoticePN Violation for NPDWR ViolationOpen
  5. 2022-12-29Public NoticePN Violation for NPDWR ViolationOpen
  6. 2022-08-17E. ColiMonitoring, Source Water (GWR)Open
  7. 2022-02-19Public NoticePN Violation for NPDWR ViolationOpen
  8. 2020-02-13Public NoticePN Violation for NPDWR ViolationOpen

Every violation on record

  1. 2025-07-22Groundwater Rule ×2Failure To Address DeficiencyOpen
  2. 2025-07-07Groundwater Rule ×2Failure To Address DeficiencyOpen
  3. 2024-01-01NitrateMonitoring, RegularPeriod ended · no return to compliance on file
  4. 2023-10-15Public NoticePN Violation for NPDWR ViolationOpen
  5. 2023-02-17Public NoticePN Violation for NPDWR ViolationOpen
  6. 2022-12-29Public NoticePN Violation for NPDWR ViolationOpen
  7. 2022-09-04Revised Total Coliform RuleTTBack in compliance
  8. 2022-08-17E. ColiMonitoring, Source Water (GWR)Open
  9. 2022-02-19Public NoticePN Violation for NPDWR ViolationOpen
  10. 2020-02-13Public NoticePN Violation for NPDWR ViolationOpen
  11. 2020-01-01NitrateMonitoring, RegularBack in compliance
  12. 2018-08-01Revised Total Coliform RuleRPTBack in compliance
  13. 2018-01-01NitrateMonitoring, RegularBack in compliance
  14. 2017-12-01Revised Total Coliform RuleMONBack in compliance
  15. 2016-09-16E. ColiMonitoring, Source Water (GWR)Back in compliance
  16. 2016-02-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  17. 2016-01-01NitrateMonitoring, RegularBack in compliance
  18. 2015-01-01NitrateMonitoring, RegularBack in compliance
  19. 2014-10-09E. ColiMonitoring, Source Water (GWR)Back in compliance
  20. 2013-01-01NitriteMonitoring, RegularPeriod ended · no return to compliance on file
  21. 2009-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  22. 2008-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  23. 2007-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  24. 2003-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served75
Service connections17
Water sourceGroundwater
System typeTransient Non-Community
OwnerPrivate
StatusActive
CitySt Johns
EPA ZIP on file85936

Areas served

  • Adamana, Navajo County

Reading this record

303 Dwid is a transient non-community that draws from groundwater and serves about 75 people in St Johns, 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.