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Del Dios Mutual Water Company

EPA monitoring tested this supplier for 69 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
6
detected
330
people served
3
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
SWP
Ownership
Private
Counties served
San Diego

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

3
health-based violations
27
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2017-10-01 → 2017-12-31
MCL Health-based Resolved 2007-10-01 → 2007-10-31
MCL Health-based Resolved 2007-10-01 → 2007-10-31
Other Monitoring Resolved 2024-07-01
Other Monitoring Resolved 2024-07-01
MON Monitoring Archived 2022-07-01 → 2022-09-30
MON Monitoring Archived 2022-04-01 → 2022-06-30
MR Monitoring Resolved 2020-10-01
MR Monitoring Resolved 2020-10-01
MR Monitoring Resolved 2018-07-01 → 2018-09-30

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
8800 µg/L 88%
of the EPA limit 10000 µg/L
 28/30 SYR4 2017–2019
Combined Uranium
30.396 µg/L 101%
of the EPA limit, in the worst sample — 30 µg/L
 10/10 SYR4 2016–2019
Arsenic
6.1 µg/L 61%
of the EPA limit 10 µg/L
 5/11 SYR4 2017–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 4/4 LCR 2023
Fluoride
350 µg/L 8.8%
of the EPA limit 4000 µg/L
 3/3 SYR4 2019
Nitrate-Nitrite
350 µg/L 3.5%
of the EPA limit 10000 µg/L
 1/1 SYR4 2018
63 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
FOSTER, RICH
Phone
760-580-5805
Email
Richfoster1@cox.net

Frequently asked questions about Del Dios Mutual Water Company

Is Del Dios Mutual Water Company tap water safe to drink?

EPA monitoring detected 6 contaminants in Del Dios Mutual Water Company's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Del Dios Mutual Water Company's water?

EPA monitoring detected Nitrate, Combined Uranium, Arsenic, Lead, Fluoride, and others. The full list with the level and data source for each is above.

How many people does Del Dios Mutual Water Company serve?

Del Dios Mutual Water Company reports serving 330 people in California, per its EPA record.

Has Del Dios Mutual Water Company had any water quality violations?

The EPA has 27 violations on file for Del Dios Mutual Water Company, of which 3 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.