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Tap water quality report

Sisquoc

EPA monitoring tested this supplier for 69 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
10
detected
135
people served
2
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
Santa Barbara

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.

2
health-based violations
6
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1982-12-01 → 1982-12-31
MCL Health-based Archived 1982-10-01 → 1982-10-31
MR Monitoring Resolved 1993-07-01 → 2003-12-31
MR Monitoring Archived 1981-10-01 → 1982-09-30
MR Monitoring Archived 1981-06-01 → 1982-05-31
MR Monitoring Archived 1980-10-30 → 1981-10-29

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
3120 µg/L 31%
of the EPA limit 10000 µg/L
worst single sample: 3900 µg/L
34/36 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 6/6 LCR 2023
Fluoride
354 µg/L 8.9%
of the EPA limit 4000 µg/L
worst single sample: 360 µg/L
5/5 SYR4 2012–2018
Combined Uranium
5.0213 µg/L 17%
of the EPA limit 30 µg/L
worst single sample: 5.066 µg/L
4/5 SYR4 2014
Nitrate-Nitrite
2630 µg/L 26%
of the EPA limit 10000 µg/L
worst single sample: 2700 µg/L
2/2 SYR4 2018
Selenium
8.99 µg/L 18%
of the EPA limit 50 µg/L
worst single sample: 9.1 µg/L
2/5 SYR4 2012–2018
Arsenic
2.1 µg/L 21%
of the EPA limit 10 µg/L
 1/5 SYR4 2012–2018
Ethylbenzene
2.1 µg/L 0.3%
of the EPA limit 700 µg/L
 1/9 SYR4 2012–2018
Toluene
8.3 µg/L 0.8%
of the EPA limit 1000 µg/L
 1/9 SYR4 2012–2018
Xylenes, Total
11 µg/L 0.1%
of the EPA limit 10000 µg/L
 1/9 SYR4 2012–2018
59 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 DibromideEndothallEndrinGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CHAN, SHAZ
Phone
805-349-7404
Email
[email protected]

Frequently asked questions about Sisquoc

Is Sisquoc tap water safe to drink?

EPA monitoring detected 10 contaminants in Sisquoc'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 Sisquoc's water?

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

How many people does Sisquoc serve?

Sisquoc reports serving 135 people in California, per its EPA record.

Has Sisquoc had any water quality violations?

The EPA has 6 violations on file for Sisquoc, of which 2 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.