Cdfw Elkhorn Slough Ecological Reserve
Published drinking-water records and contacts for Cdfw Elkhorn Slough Ecological Reserve. System CA2702226. Review sources and dates; not a real-time water assessment.
- System ID
- CA2702226
- State or territory
- CA
- Published population served
- 650
- System type (source code)
- TNCWS
Published records and dates
- California DDW laboratory results: 24 — 2026-02-25 – 2026-02-25
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
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| SODIUM | 116 MG/L | 2026-02-25 | SOUTH WELL 02 - RAW / California DDW laboratory results |
| SULFATE | 54 MG/L | 2026-02-25 | SOUTH WELL 02 - RAW / California DDW laboratory results |
| MANGANESE | 95 UG/L | 2026-02-25 | SOUTH WELL 02 - RAW / California DDW laboratory results |
| PH | 6.4 PH | 2026-02-25 | SOUTH WELL 02 - RAW / California DDW laboratory results |
| ALKALINITY, TOTAL | 112 MG/L | 2026-02-25 | SOUTH WELL 02 - RAW / California DDW laboratory results |
| ALKALINITY, CARBONATE | < 1.000000000 MG/L | 2026-02-25 | SOUTH WELL 02 - RAW / California DDW laboratory results |
| IRON | 357 UG/L | 2026-02-25 | SOUTH WELL 02 - RAW / California DDW laboratory results |
| COPPER, FREE | 6 UG/L | 2026-02-25 | SOUTH WELL 02 - RAW / California DDW laboratory results |
| ODOR | 1 TON | 2026-02-25 | SOUTH WELL 02 - RAW / California DDW laboratory results |
| SILVER | < 5.000000000 UG/L | 2026-02-25 | SOUTH WELL 02 - RAW / California DDW laboratory results |
| ZINC | 45 UG/L | 2026-02-25 | SOUTH WELL 02 - RAW / California DDW laboratory results |
| CALCIUM | 170 MG/L | 2026-02-25 | SOUTH WELL 02 - RAW / 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
2 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
| Rule / record | Period | Recorded status | Health-based (EPA classification) | Source quarter |
|---|---|---|---|---|
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2023-10-01 – 2023-10-31 | Resolved | No | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2023-09-01 – 2023-09-30 | Resolved | No | 2026Q3 |
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: 2026-10-18
Administrative contact (EPA filing)
Battistoni, John: 831-728-2822
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.