Is Castroville Community Services District Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Monterey

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
MCL	Health-based	Resolved	1994-07-01 → 1994-07-31
MCL	Health-based	Resolved	1994-07-01 → 1994-07-31
MCL	Health-based	Resolved	1994-02-01 → 1994-02-28
MCL	Health-based	Resolved	1994-02-01 → 1994-02-28
MR	Monitoring	Archived	2026-02-01 → 2026-02-28
MR	Monitoring	Archived	2024-01-01 → 2024-12-31
MR	Monitoring	Resolved	2010-11-01 → 2010-11-30
MR	Monitoring	Resolved	2010-11-01 → 2010-11-30
MR	Monitoring	Resolved	2005-01-01 → 2005-03-31
MR	Monitoring	Resolved	1996-11-01 → 1996-11-30

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 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
Arsenic	23.925 µg/L 239% of the EPA limit, at the 95th percentile of samples — 10 µg/L worst single sample: 26.3 µg/L	124/124	SYR4	2013–2019
Nitrate	1130 µg/L 11% of the EPA limit 10000 µg/L	52/70	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	47/47	LCR	2025
TTHM	39.36 µg/L 49% of the EPA limit 80 µg/L worst single sample: 42.9 µg/L	13/18	SYR4	2014–2019
Chromium	13 µg/L 13% of the EPA limit 100 µg/L worst single sample: 14 µg/L	11/11	SYR4	2013–2019
Fluoride	900 µg/L 23% of the EPA limit 4000 µg/L	11/11	SYR4	2013–2019
Barium	258 µg/L 13% of the EPA limit 2000 µg/L worst single sample: 303 µg/L	10/11	SYR4	2013–2019
Nitrate-Nitrite	555000 µg/L 5550% of the EPA limit, at the 95th percentile of samples — 10000 µg/L worst single sample: 600000 µg/L	10/11	SYR4	2013–2019
Bromoform	32.7 µg/L No EPA limit set worst single sample: 34.5 µg/L	9/18	SYR4	2014–2019
Copper	7.95 µg/L 0.6% of the EPA limit 1300 µg/L worst single sample: 9 µg/L	8/13	SYR4	2013–2019
Selenium	5.455 µg/L 11% of the EPA limit 50 µg/L worst single sample: 5.7 µg/L	8/11	SYR4	2013–2019
Combined Uranium	4.917 µg/L 16% of the EPA limit 30 µg/L worst single sample: 5.066 µg/L	6/9	SYR4	2015–2019
Dibromoacetic Acid	8.84 µg/L No EPA limit set worst single sample: 9 µg/L	5/12	SYR4	2014–2019
Total Haloacetic Acids (HAA5)	11.46 µg/L 19% of the EPA limit 60 µg/L worst single sample: 12 µg/L	5/12	SYR4	2014–2019
Dibromochloromethane	6 µg/L No EPA limit set	4/18	SYR4	2014–2019
Nitrite	0.3850 µg/L 0% of the EPA limit 1000 µg/L worst single sample: 0.4000 µg/L	4/14	SYR4	2013–2019
Lithium	40.2 µg/L No EPA limit set	4/4	UCMR-5	2025
Bromodichloromethane	1.95 µg/L No EPA limit set worst single sample: 2 µg/L	3/18	SYR4	2014–2019
Chloroform	14.3 µg/L No EPA limit set worst single sample: 15 µg/L	2/18	SYR4	2014–2019
Di(2-ethylhexyl) Phthalate	16.38 µg/L 273% of the EPA limit, at the 95th percentile of samples — 6 µg/L worst single sample: 17 µg/L	2/11	SYR4	2013–2018
Monobromoacetic Acid	1.955 µg/L No EPA limit set worst single sample: 2 µg/L	2/12	SYR4	2014–2019
Dichloroacetic Acid	1 µg/L No EPA limit set	1/12	SYR4	2014–2019
Toluene	3.4 µg/L 0.3% of the EPA limit 1000 µg/L	1/16	SYR4	2013–2019

72 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylbenzeneHfpo-DaLassoLeadMercuryMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: DERBIN, JAMES
Phone: 831-633-2560
Email: [email protected]

Frequently asked questions about Castroville Community Services District

Is Castroville Community Services District tap water safe to drink?

EPA monitoring detected 23 contaminants in Castroville Community Services District'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 Castroville Community Services District's water?

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

How many people does Castroville Community Services District serve?

Castroville Community Services District reports serving 7,515 people in California, per its EPA record.

Has Castroville Community Services District had any water quality violations?

The EPA has 11 violations on file for Castroville Community Services District, of which 4 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.