Walden West
Published drinking-water records and contacts for Walden West. System CA4300764. Review sources and dates; not a real-time water assessment.
- System ID
- CA4300764
- State or territory
- CA
- Published population served
- 273
- System type (source code)
- TNCWS
Published records and dates
- California DDW laboratory results: 1 — 2026-06-18 – 2026-06-18
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 |
|---|---|---|---|
| NITRATE | < 0.100000000 MG/L | 2026-06-18 | WELL 01 / 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
27 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) | 2023-01-01 – 2023-03-31 | Resolved | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 2021-01-01 – 2021-12-31 | Resolved | No | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2018-10-01 – 2018-12-31 | Resolved | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-09-01 – 1984-09-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-08-01 – 1984-08-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-07-01 – 1984-07-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-06-01 – 1984-06-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-05-01 – 1984-05-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-04-01 – 1984-04-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-03-01 – 1984-03-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-02-01 – 1984-02-29 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1984-01-01 – 1984-01-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-12-01 – 1983-12-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-11-01 – 1983-11-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-10-01 – 1983-10-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-09-01 – 1983-09-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-08-01 – 1983-08-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-07-01 – 1983-07-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-06-01 – 1983-06-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1983-05-01 – 1983-05-31 | Archived | 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: 2026-10-17
Administrative contact (EPA filing)
Hagler, Sam: 408-453-4310
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.