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Siete Robles Mutual Water Co

EPA monitoring tested this supplier for 38 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

38
contaminants tested
8
detected
323
people served
4
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
SWP
Ownership
Private
Counties served
Ventura

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.

4
health-based violations
28
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
MCL Health-based Resolved 1998-02-01 → 1998-02-28
MCL Health-based Resolved 1993-12-01 → 1993-12-31
MCL Health-based Resolved 1993-12-01 → 1993-12-31
RPT Monitoring Unaddressed 2024-10-17
MR Monitoring Resolved 2019-01-01 → 2019-12-31
MR Monitoring Resolved 2019-01-01 → 2019-12-31
MR Monitoring Resolved 2019-01-01 → 2019-12-31
MR Monitoring Resolved 2019-01-01 → 2019-12-31
MR Monitoring Resolved 2018-10-01

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
6554 µg/L 66%
of the EPA limit 10000 µg/L
 62/62 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 23/23 LCR 2023
Fluoride
500 µg/L 13%
of the EPA limit 4000 µg/L
 3/3 SYR4 2013–2019
Barium
31.5 µg/L 1.6%
of the EPA limit 2000 µg/L
 2/3 SYR4 2013–2019
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
 2/3 SYR4 2013–2019
Nitrate-Nitrite
4500 µg/L 45%
of the EPA limit 10000 µg/L
 2/2 SYR4 2016–2019
Combined Uranium
2.9949 µg/L 10%
of the EPA limit 30 µg/L
 1/1 SYR4 2019
Lead
0.5000 µg/L 3.3%
of the EPA limit 15 µg/L
 1/3 SYR4 2013–2019
30 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbon TetrachlorideDichloromethaneEthylbenzeneMercuryNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BREEN, DAN
Email
ojaibreen@gmail.com

Frequently asked questions about Siete Robles Mutual Water Co

Is Siete Robles Mutual Water Co tap water safe to drink?

EPA monitoring detected 8 contaminants in Siete Robles Mutual Water Co'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 Siete Robles Mutual Water Co's water?

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

How many people does Siete Robles Mutual Water Co serve?

Siete Robles Mutual Water Co reports serving 323 people in California, per its EPA record.

Has Siete Robles Mutual Water Co had any water quality violations?

The EPA has 28 violations on file for Siete Robles Mutual Water Co, of which 4 are health-based (a contaminant limit or required treatment was breached) and 2 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.