Transient Non-Community · PWSID CA3302102

Anza Petroleum Inc

Serves 115 peopleGroundwaterOwner: PrivateCarlsbad, California
1 open treatment violation.

Open for: Revised Total Coliform 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 2023: 5 violations. 1 treatment lapse · 4 missed or late tests. Most recent began 2025-04-01.

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
1Treatment lapse1 open
4Missed or late test
0Notice or report

More violations on record than 76% 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

20052010201520202023 · Treatment lapse: 12025 · Missed or late test: 42025 · Missed or late test: 42025 · Missed or late test: 42025 · Missed or late test: 42025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
20% treatment lapse · 180% missed or late test · 4

Across California, 52% of violations are missed or late tests and 29% are water over a limit.

What you can do

  • Total Coliform Bacteria: If your water system has coliform violations, consider boiling water or using bottled water until the system confirms the issue is resolved. Contact your water provider for their latest test results and any boil-water advisories.

Open now (1)

  1. 2023-01-11Revised Total Coliform RuleTTOpen

Every violation on record

  1. 2025-04-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  2. 2025-03-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  3. 2025-02-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  4. 2025-01-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  5. 2023-01-11Revised Total Coliform RuleTTOpen

System details

Population served115
Service connections2
Water sourceGroundwater
System typeTransient Non-Community
OwnerPrivate
StatusActive
CityCarlsbad
EPA ZIP on file92009

Areas served

  • Riverside County

Reading this record

Anza Petroleum Inc is a transient non-community that draws from groundwater and serves about 115 people in Carlsbad, 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.