Community Water System · PWSID 090600148

Santa Rosa Rancheria

Serves 1,000 peopleGroundwater PurchasedOwner: Native AmericanLemoore, California
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 1996: 44 violations. 31 missed or late tests · 13 notices or reports. Most recent began 2025-07-01.

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
0Treatment lapse
31Missed or late test
13Notice or report3 open

More violations on record than 97% of active water systems in California. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1996 · Missed or late test: 22000 · Missed or late test: 12000 · Notice or report: 120002001 · Notice or report: 12002 · Notice or report: 12004 · Notice or report: 12005 · Notice or report: 1200520102015 · Missed or late test: 120152017 · Missed or late test: 220202021 · Missed or late test: 22022 · Missed or late test: 12023 · Missed or late test: 62023 · Missed or late test: 62023 · Missed or late test: 62023 · Notice or report: 12024 · Missed or late test: 102024 · Missed or late test: 102024 · Missed or late test: 102024 · Missed or late test: 102024 · Missed or late test: 102024 · Notice or report: 42024 · Notice or report: 42025 · Missed or late test: 62025 · Missed or late test: 62025 · Missed or late test: 62025 · Notice or report: 32025 · Notice or report: 32025
One square ≈ 2 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
70% missed or late test · 3130% notice or report · 13

Across California, 52% of violations are missed or late tests and 29% 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 5 ppb
below 5 ppb
3.4 ppb
1.5 ppb

Open now (3)

  1. 2025-04-01Public NoticePN Violation for NPDWR ViolationOpen
  2. 2025-03-01Public NoticePN Violation for NPDWR ViolationOpen
  3. 2025-02-01Public NoticePN Violation for NPDWR ViolationOpen

Every violation on record

  1. 2025-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  2. 2025-04-01Public NoticePN Violation for NPDWR ViolationOpen
  3. 2025-04-01Revised Total Coliform RuleMONBack in compliance
  4. 2025-04-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  5. 2025-03-01Public NoticePN Violation for NPDWR ViolationOpen
  6. 2025-03-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  7. 2025-02-01Public NoticePN Violation for NPDWR ViolationOpen
  8. 2025-02-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  9. 2025-01-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  10. 2024-11-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  11. 2024-10-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  12. 2024-10-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  13. 2024-09-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  14. 2024-09-01Revised Total Coliform RuleMONBack in compliance
  15. 2024-08-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  16. 2024-08-01Revised Total Coliform RuleMONBack in compliance
  17. 2024-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  18. 2024-06-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  19. 2024-06-01Revised Total Coliform RuleMONBack in compliance
  20. 2024-04-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  21. 2024-04-01Revised Total Coliform RuleMONBack in compliance
  22. 2024-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  23. 2024-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  24. 2023-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  25. 2023-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
Show the other 19 entries
  1. 2023-04-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  2. 2023-01-01Trihalomethanes (TTHM)Monitoring, Routine (IDSE)Period ended · no return to compliance on file
  3. 2023-01-01Total Haloacetic Acids (HAA5)Monitoring, Routine (IDSE)Period ended · no return to compliance on file
  4. 2023-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  5. 2023-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  6. 2022-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  7. 2021-01-01Trihalomethanes (TTHM)Monitoring, Routine (IDSE)Back in compliance
  8. 2021-01-01Total Haloacetic Acids (HAA5)Monitoring, Routine (IDSE)Back in compliance
  9. 2017-01-01Trihalomethanes (TTHM)Monitoring, Routine (IDSE)Back in compliance
  10. 2017-01-01Total Haloacetic Acids (HAA5)Monitoring, Routine (IDSE)Back in compliance
  11. 2015-08-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  12. 2005-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  13. 2004-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  14. 2002-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  15. 2001-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  16. 2000-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  17. 2000-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  18. 1996-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  19. 1996-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served1,000
Service connections251
Water sourceGroundwater Purchased
System typeCommunity Water System
OwnerNative American
StatusActive
CityLemoore
EPA ZIP on file93245

Areas served

  • Santa Rosa Rancheria

Reading this record

Santa Rosa Rancheria is a community water system that draws from groundwater purchased and serves about 1,000 people in Lemoore, California. 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.