Community Water System · PWSID 090400111

Scua Lower Peridot Bush

Serves 342 peopleGroundwaterOwner: Native AmericanSan Carlos, Arizona
3 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 2013: 29 violations. 6 treatment lapses · 12 missed or late tests · 11 notices or reports. Most recent began 2025-07-31.

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
6Treatment lapse3 open
12Missed or late test
11Notice or report1 open

More violations on record than 75% 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: 12014 · Missed or late test: 22014 · Missed or late test: 22015 · Missed or late test: 42015 · Missed or late test: 42015 · Missed or late test: 42015 · Missed or late test: 42015 · Notice or report: 120152016 · Missed or late test: 12018 · Missed or late test: 22018 · Missed or late test: 22018 · Notice or report: 32018 · Notice or report: 32018 · Notice or report: 32019 · Missed or late test: 12019 · Notice or report: 32019 · Notice or report: 32019 · Notice or report: 320202022 · Missed or late test: 12022 · Notice or report: 22022 · Notice or report: 22023 · Treatment lapse: 32023 · Treatment lapse: 32023 · Treatment lapse: 32023 · Notice or report: 12024 · Notice or report: 12025 · Treatment lapse: 32025 · Treatment lapse: 32025 · Treatment lapse: 32025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
21% treatment lapse · 641% missed or late test · 1238% notice or report · 11

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 5 results on file · action level 15 ppb

below 5 ppb
below 5 ppb
below 5 ppb
below 1 ppb
below 1 ppb

Open now (4)

  1. 2025-07-31Groundwater Rule ×3Failure To Address DeficiencyOpen
  2. 2024-11-16Lead service line inventoryRPTOpen

Every violation on record

  1. 2025-07-31Groundwater Rule ×3Failure To Address DeficiencyOpen
  2. 2024-11-16Lead service line inventoryRPTOpen
  3. 2023-06-30Groundwater Rule ×3Failure To Address DeficiencyBack in compliance
  4. 2023-02-01Revised Total Coliform RuleRPTBack in compliance
  5. 2022-12-01Revised Total Coliform RuleMONBack in compliance
  6. 2022-08-01Revised Total Coliform RuleRPTBack in compliance
  7. 2022-07-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  8. 2019-03-01Revised Total Coliform RuleRPTBack in compliance
  9. 2019-02-01Revised Total Coliform RuleRPTBack in compliance
  10. 2019-01-01Revised Total Coliform RuleRPTBack in compliance
  11. 2019-01-01NitrateMonitoring, RegularBack in compliance
  12. 2018-12-01Revised Total Coliform RuleRPTBack in compliance
  13. 2018-11-01Revised Total Coliform RuleRPTBack in compliance
  14. 2018-10-01Revised Total Coliform RuleRPTBack in compliance
  15. 2018-09-01E. ColiMonitoring, Source Water (GWR)Back in compliance
  16. 2018-01-01NitrateMonitoring, RegularBack in compliance
  17. 2016-03-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  18. 2015-12-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  19. 2015-11-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  20. 2015-10-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  21. 2015-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  22. 2015-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  23. 2014-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  24. 2014-01-01DichloromethaneMonitoring, RegularBack in compliance
  25. 2013-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served342
Service connections58
Water sourceGroundwater
System typeCommunity Water System
OwnerNative American
StatusActive
CitySan Carlos
EPA ZIP on file85550

Areas served

    Reading this record

    Scua Lower Peridot Bush is a community water system that draws from groundwater and serves about 342 people in San Carlos, 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.