Golden State Water Company - Lake Marie
Published drinking-water records and contacts for Golden State Water Company - Lake Marie. System CA4210022. Review sources and dates; not a real-time water assessment.
- System ID
- CA4210022
- State or territory
- CA
- Published population served
- 545
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 24 — 1993-01-01 – 2026-12-31
- California DDW laboratory results: 97 — 2026-02-05 – 2026-05-19
Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.
Published testing results
Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.
“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example
Lead and copper: 90th-percentile summaries
These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile
| Substance | Published 90th percentile | Monitoring period | Source quarter |
|---|---|---|---|
| Lead (PB90) | 0.0033 mg/L | 2024-01-01 – 2026-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0.0019 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2015-01-01 – 2017-12-31 | 2026Q3 |
| Lead (PB90) | 0.0015 mg/L | 2012-01-01 – 2014-12-31 | 2026Q3 |
| Lead (PB90) | 0.0041 mg/L | 2009-01-01 – 2011-12-31 | 2026Q3 |
| Lead (PB90) | 0.0029 mg/L | 2006-01-01 – 2008-12-31 | 2026Q3 |
| Lead (PB90) | 0.015 mg/L | 2005-01-01 – 2007-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| PERFLUORO PFEESA | < 2.000000000 NG/L | 2026-05-19 | VINEYARD WELL 06 / California DDW laboratory results |
| PERFLUOROPENTANESULFONIC ACID (PFPES) | < 2.000000000 NG/L | 2026-05-19 | VINEYARD WELL 06 / California DDW laboratory results |
| PERFLUOROHEXANE SULFONIC ACID (PFHxS) | < 2.000000000 NG/L | 2026-05-19 | VINEYARD WELL 06 / California DDW laboratory results |
| ADONA | < 2.000000000 NG/L | 2026-05-19 | LAKE MARIE WELL 4 / California DDW laboratory results |
| PERFLUOROBUTANE SULFONIC ACID (PFBS) | < 2.000000000 NG/L | 2026-05-19 | LAKE MARIE WELL 4 / California DDW laboratory results |
| PERFLUORO PFMBA | < 2.000000000 NG/L | 2026-05-19 | LAKE MARIE WELL 4 / California DDW laboratory results |
| 9CL-PF3ONS | < 2.000000000 NG/L | 2026-05-19 | VINEYARD WELL 06 / California DDW laboratory results |
| PERFLUOROPENTANOIC ACID (PFPEA) | < 2.000000000 NG/L | 2026-05-19 | VINEYARD WELL 06 / California DDW laboratory results |
| 11CL-PF3OUDS | < 2.000000000 NG/L | 2026-05-19 | LAKE MARIE WELL 4 / California DDW laboratory results |
| PERFLUORODECANOIC ACID (PFDA) | < 2.000000000 NG/L | 2026-05-19 | VINEYARD WELL 06 / California DDW laboratory results |
| PERFLUOROCTANOIC ACID (PFOA) | < 2.000000000 NG/L | 2026-05-19 | VINEYARD WELL 06 / California DDW laboratory results |
| PERFLUORO PFMBA | < 2.000000000 NG/L | 2026-05-19 | VINEYARD WELL 06 / California DDW laboratory results |
State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.
Download state records with source notes (CSV)
Published compliance history
0 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
Source dates and refresh checks
A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.
- EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
- EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
- EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17
- California DDW laboratory results — last successful check: 2026-10-17
Administrative contact (EPA filing)
White, Dawn: 916-853-3615
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.