Is Calleguas Municipal Water Dist Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	1992-03-01 → 1992-03-31
TT	Health-based	Resolved	1992-03-01 → 1992-03-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Bromodichloromethane	7.1 µg/L No EPA limit set worst single sample: 19 µg/L	392/392	SYR4	2012–2019
Bromoform	17.18 µg/L No EPA limit set worst single sample: 28 µg/L	392/392	SYR4	2012–2019
Dibromochloromethane	12.51 µg/L No EPA limit set worst single sample: 19.2 µg/L	390/390	SYR4	2012–2019
TTHM	39.315 µg/L 49% of the EPA limit 80 µg/L worst single sample: 57 µg/L	380/380	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	14 µg/L 23% of the EPA limit 60 µg/L worst single sample: 22 µg/L	350/377	SYR4	2012–2019
Chloroform	5.99 µg/L No EPA limit set worst single sample: 14 µg/L	343/387	SYR4	2012–2019
Dibromoacetic Acid	7 µg/L No EPA limit set worst single sample: 11 µg/L	318/373	SYR4	2012–2019
Dichloroacetic Acid	6 µg/L No EPA limit set worst single sample: 11 µg/L	238/365	SYR4	2012–2019
Nitrate	1000 µg/L 10% of the EPA limit 10000 µg/L worst single sample: 1514.2 µg/L	190/364	SYR4	2012–2019
Monobromoacetic Acid	6 µg/L No EPA limit set worst single sample: 8 µg/L	178/362	SYR4	2012–2019
Gross Beta Particle Activity	4 pCi/L No EPA limit set worst single sample: 11.8 pCi/L	149/155	SYR4	2012–2019
Combined Uranium	7.57665 µg/L 25% of the EPA limit 30 µg/L worst single sample: 76.288 µg/L	147/156	SYR4	2012–2019
Fluoride	900 µg/L 23% of the EPA limit 4000 µg/L worst single sample: 1000 µg/L	107/108	SYR4	2012–2019
Trichloroacetic Acid	3.7 µg/L No EPA limit set worst single sample: 6 µg/L	87/353	SYR4	2012–2019
Nitrate-Nitrite	620000 µg/L 6200% of the EPA limit, at the 95th percentile of samples — 10000 µg/L worst single sample: 900000 µg/L	57/108	SYR4	2012–2019
Barium	77.615 µg/L 3.9% of the EPA limit 2000 µg/L worst single sample: 111 µg/L	38/63	SYR4	2012–2019
Selenium	14.25 µg/L 28% of the EPA limit 50 µg/L worst single sample: 26 µg/L	36/63	SYR4	2012–2019
Arsenic	5.9 µg/L 59% of the EPA limit 10 µg/L worst single sample: 9 µg/L	32/64	SYR4	2012–2019
Dichloromethane	3.44 µg/L 69% of the EPA limit 5 µg/L worst single sample: 6.1 µg/L	20/97	SYR4	2012–2019
Lead	6.38 µg/L 43% of the EPA limit 15 µg/L worst single sample: 7.4 µg/L	18/64	SYR4	2012–2019
Copper	265 µg/L 20% of the EPA limit 1300 µg/L worst single sample: 650 µg/L	15/109	SYR4	2012–2019
Chromium	14 µg/L 14% of the EPA limit 100 µg/L worst single sample: 42 µg/L	15/63	SYR4	2012–2019
Mercury	0.1620 µg/L 8.1% of the EPA limit 2 µg/L worst single sample: 0.1900 µg/L	9/63	SYR4	2012–2019
Monochloroacetic Acid	6 µg/L No EPA limit set	7/347	SYR4	2012–2019
Nitrite	425 µg/L 43% of the EPA limit 1000 µg/L worst single sample: 500 µg/L	6/108	SYR4	2012–2019
Xylenes, Total	1.175 µg/L 0% of the EPA limit 10000 µg/L worst single sample: 1.2 µg/L	6/53	SYR4	2012–2019
1,2-DIBROMO-3-CHLOROPROPANE	0.0100 µg/L 5% of the EPA limit 0.2000 µg/L	1/62	SYR4	2012–2019
Bromate	6.7 µg/L 67% of the EPA limit 10 µg/L	1/12	SYR4	2014–2019
Cadmium	0.2000 µg/L 4% of the EPA limit 5 µg/L	1/63	SYR4	2012–2019
Dinoseb	6 µg/L 86% of the EPA limit 7 µg/L	1/63	SYR4	2012–2019

51 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChlordaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: MCCAFFREY, KRISTINE
Phone: 805-579-7138
Email: [email protected]

Frequently asked questions about Calleguas Municipal Water Dist

Is Calleguas Municipal Water Dist tap water safe to drink?

EPA monitoring detected 30 contaminants in Calleguas Municipal Water Dist'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 Calleguas Municipal Water Dist's water?

EPA monitoring detected Bromodichloromethane, Bromoform, Dibromochloromethane, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Calleguas Municipal Water Dist serve?

Calleguas Municipal Water Dist reports serving 0 people in California, per its EPA record.

Has Calleguas Municipal Water Dist had any water quality violations?

The EPA has 2 violations on file for Calleguas Municipal Water Dist, 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.