Community Water System · PWSID NN4903071

Todahaidekani Ntua

Serves 301 peopleSurface Water PurchasedOwner: Native AmericanFt Defiance, Arizona
Nothing open right now.

On record since 2013: 17 violations. 8 over the limit · 3 missed or late tests · 6 notices or reports. Most recent began 2022-01-01.

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

8Over the limit
0Treatment lapse
3Missed or late test
6Notice or report

More violations on record than 59% 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

200520102013 · Missed or late test: 12013 · Notice or report: 12015 · Over the limit: 12015 · Notice or report: 120152016 · Over the limit: 32016 · Over the limit: 32016 · Over the limit: 32016 · Notice or report: 12017 · Over the limit: 12017 · Notice or report: 12018 · Over the limit: 22018 · Over the limit: 22018 · Notice or report: 12019 · Missed or late test: 12020 · Over the limit: 12020 · Notice or report: 120202022 · Missed or late test: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
47% over the limit · 818% missed or late test · 335% notice or report · 6

Across Arizona, 65% of violations are missed or late tests and 5% 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 4 results on file · action level 15 ppb

below 1 ppb
below 1 ppb
below 1 ppb
below 1 ppb

Every violation on record

  1. 2022-01-01ArsenicMonitoring, RegularBack in compliance
  2. 2020-04-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  3. 2020-04-01ArsenicMCL, Averagemeasured 0.0105 MG/LBack in compliance
  4. 2019-01-01ArsenicMonitoring, RegularBack in compliance
  5. 2018-10-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  6. 2018-10-01ArsenicMCL, Averagemeasured 0.0107 MG/LBack in compliance
  7. 2018-07-01ArsenicMCL, Averagemeasured 0.0106 MG/LBack in compliance
  8. 2017-01-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  9. 2017-01-01ArsenicMCL, Averagemeasured 0.0109 MG/LBack in compliance
  10. 2016-07-01ArsenicMCL, Averagemeasured 0.0106 MG/LBack in compliance
  11. 2016-04-01Revised Total Coliform RuleOtherBack in compliance
  12. 2016-04-01ArsenicMCL, Averagemeasured 0.0111 MG/LBack in compliance
  13. 2016-01-01ArsenicMCL, Averagemeasured 0.0111 MG/LBack in compliance
  14. 2015-10-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  15. 2015-10-01ArsenicMCL, Averagemeasured 0.0120 MG/LBack in compliance
  16. 2013-10-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  17. 2013-10-01Dbp Stage 2Failure Submit IDSE/Subpart V Plan RptBack in compliance

System details

Population served301
Service connections88
Water sourceSurface Water Purchased
System typeCommunity Water System
OwnerNative American
StatusActive
CityFt Defiance
EPA ZIP on file86504

Areas served

    Reading this record

    Todahaidekani Ntua is a community water system that draws from surface water purchased and serves about 301 people in Ft Defiance, 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.