Del Dios Mutual Water Company
Published drinking-water records and contacts for Del Dios Mutual Water Company. System CA3700866. Review sources and dates; not a real-time water assessment.
- System ID
- CA3700866
- State or territory
- CA
- Published population served
- 330
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 4 — 2012-01-01 – 2023-12-31
- California DDW laboratory results: 107 — 2026-02-10 – 2026-06-30
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 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0.044 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0.004 mg/L | 2015-01-01 – 2017-12-31 | 2026Q3 |
| Lead (PB90) | 0.002 mg/L | 2012-01-01 – 2014-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| IRON | 1600 UG/L | 2026-06-30 | WELL 03 / California DDW laboratory results |
| TDS | 1300 MG/L | 2026-06-30 | WELL 02 / California DDW laboratory results |
| TDS | 960 MG/L | 2026-06-30 | WELL 06 / California DDW laboratory results |
| NITRATE | 4.8 MG/L | 2026-06-30 | WELL 03 / California DDW laboratory results |
| IRON | 1000 UG/L | 2026-06-30 | WELL 06 / California DDW laboratory results |
| TDS | 770 MG/L | 2026-06-30 | WELL 03 / California DDW laboratory results |
| TDS | 770 MG/L | 2026-03-31 | WELL 03 / California DDW laboratory results |
| TTHM | 34.04 UG/L | 2026-03-31 | DBPR Sample / California DDW laboratory results |
| RADIUM-228 | < 0.698000000 PCI/L | 2026-03-31 | WELL 06 / California DDW laboratory results |
| RADIUM-226 | < 0.410000000 PCI/L | 2026-03-31 | WELL 06 / California DDW laboratory results |
| MONOCHLOROACETIC ACID | < 2.000000000 UG/L | 2026-03-31 | DBPR Sample / California DDW laboratory results |
| TDS | 1300 MG/L | 2026-03-31 | WELL 02 / 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
25 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 |
|---|---|---|---|---|
| Consumer Confidence Rule / Consumer Confidence Report Complete Failure to Report | 2024-07-01 – — | Resolved | No | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2024-01-01 – 2024-01-31 | Archived | No | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2023-10-01 – 2023-12-31 | Archived | No | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2023-07-01 – 2023-09-30 | Archived | No | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2023-04-01 – 2023-06-30 | Archived | No | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2023-01-01 – 2023-03-31 | Archived | No | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2022-10-01 – 2022-12-31 | Archived | No | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2022-07-01 – 2022-09-30 | Archived | No | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2022-07-01 – 2022-09-30 | Archived | No | 2026Q3 |
| Revised Total Coliform Rule / Monitoring, Routine (RTCR) | 2022-04-01 – 2022-06-30 | Archived | No | 2026Q3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2022-04-01 – 2022-06-30 | Archived | No | 2026Q3 |
| Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R | 2020-10-01 – — | Resolved | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 2018-07-01 – 2018-09-30 | Resolved | No | 2026Q3 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Maximum Contaminant Level Violation, Average | 2017-10-01 – 2017-12-31 | Resolved | Yes | 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 |
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)
Foster, Rich: 760-580-5805
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.