Community Water System · PWSID CA1910022

Calif State Polytechnical Univ - Pomona

Serves 29,854 peopleSurface WaterOwner: StatePomona, CaliforniaServes a school or daycare
1 open treatment violation.

Open for: Lead service line inventory. 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 2017: 32 violations. 2 over the limit · 1 treatment lapse · 28 missed or late tests · 1 notice or report. Most recent began 2024-10-17.

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

2Over the limit
1Treatment lapse1 open
28Missed or late test
1Notice or report1 open

More violations on record than 95% 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

2005201020152017 · Over the limit: 12020 · Missed or late test: 120202021 · Missed or late test: 272021 · Missed or late test: 272021 · Missed or late test: 272021 · Missed or late test: 272021 · Missed or late test: 272021 · Missed or late test: 272021 · Missed or late test: 272021 · Missed or late test: 272021 · Missed or late test: 272024 · Over the limit: 12024 · Treatment lapse: 12024 · Notice or report: 12025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
6% over the limit · 23% treatment lapse · 188% missed or late test · 283% notice or report · 1

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 8 results on file · action level 15 ppb

6 ppb
2.5 ppb
1.8 ppb
0.79 ppb
0 ppb
0 ppb
0 ppb
0 ppb

Open now (2)

  1. 2024-10-17Lead service line inventoryTTOpen
  2. 2024-10-17Lead service line inventoryRPTOpen

Every violation on record

  1. 2024-10-17Lead service line inventoryTTOpen
  2. 2024-10-17Lead service line inventoryRPTOpen
  3. 2024-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0810 MG/LPeriod ended · no return to compliance on file
  4. 2021-01-01StyreneMonitoring, RegularPeriod ended · no return to compliance on file
  5. 2021-01-01EthylbenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  6. 2021-01-01TolueneMonitoring, RegularPeriod ended · no return to compliance on file
  7. 2021-01-01BenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  8. 2021-01-01ChlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  9. 2021-01-011,1,2,2-TetrachloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  10. 2021-01-01TetrachloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  11. 2021-01-011,1,2-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  12. 2021-01-01TrichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  13. 2021-01-011,2-DichloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  14. 2021-01-01Carbon tetrachlorideMonitoring, RegularPeriod ended · no return to compliance on file
  15. 2021-01-011,1,1-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  16. 2021-01-011,2-DichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  17. 2021-01-01trans-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  18. 2021-01-011,1-DichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
  19. 2021-01-011,1-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  20. 2021-01-01Vinyl chlorideMonitoring, RegularPeriod ended · no return to compliance on file
  21. 2021-01-01p-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  22. 2021-01-01o-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  23. 2021-01-01DichloromethaneMonitoring, RegularPeriod ended · no return to compliance on file
  24. 2021-01-01Xylenes, TotalMonitoring, RegularPeriod ended · no return to compliance on file
  25. 2021-01-01TrichlorotrifluoroethaneMonitoring, RegularPeriod ended · no return to compliance on file
Show the other 7 entries
  1. 2021-01-011, 3-DichloropropeneMonitoring, RegularPeriod ended · no return to compliance on file
  2. 2021-01-01cis-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
  3. 2021-01-011,2,4-TrichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  4. 2021-01-01Methyl Tert-Butyl EtherMonitoring, RegularPeriod ended · no return to compliance on file
  5. 2021-01-01TrichlorofluoromethaneMonitoring, RegularPeriod ended · no return to compliance on file
  6. 2020-01-011,2,3-TrichloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  7. 2017-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0820 MG/LBack in compliance

System details

Population served29,854
Service connections148
Water sourceSurface Water
System typeCommunity Water System
OwnerState
StatusActive
CityPomona
EPA ZIP on file91768

Areas served

  • Los Angeles County

Reading this record

Calif State Polytechnical Univ - Pomona is a community water system that draws from surface water and serves about 29,854 people in Pomona, 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.