Is City of Vallejo Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Solano

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	1993-06-01 → 1993-06-30
TT	Health-based	Resolved	1993-06-01 → 1993-06-30
TT	Health-based	Resolved	1993-06-01 → 1993-06-30
TT	Health-based	Resolved	1993-06-01 → 1993-06-30
TT	Health-based	Resolved	1993-06-01 → 1993-06-30
MCL	Health-based	Resolved	1991-10-01 → 1991-12-31
MCL	Health-based	Resolved	1991-10-01 → 1991-12-31
MCL	Health-based	Resolved	1990-07-01 → 1990-09-30
MCL	Health-based	Resolved	1990-07-01 → 1990-09-30
MR	Monitoring	Resolved	1993-05-01 → 1993-05-31

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	12.1765 µg/L No EPA limit set worst single sample: 13.89 µg/L	32/32	SYR4	2019
Chloroform	55.604 µg/L No EPA limit set worst single sample: 73.06 µg/L	32/32	SYR4	2019
Dibromochloromethane	4.9995 µg/L No EPA limit set worst single sample: 5.15 µg/L	32/32	SYR4	2019
Dichloroacetic Acid	11.855 µg/L No EPA limit set worst single sample: 18.3 µg/L	32/32	SYR4	2019
TTHM	71.501 µg/L 89% of the EPA limit 80 µg/L worst single sample: 91.42 µg/L	32/32	SYR4	2019
Total Haloacetic Acids (HAA5)	22.09 µg/L 37% of the EPA limit 60 µg/L worst single sample: 31.1 µg/L	32/32	SYR4	2019
Trichloroacetic Acid	8.705 µg/L No EPA limit set worst single sample: 11.3 µg/L	32/32	SYR4	2019
Fluoride	866.5 µg/L 22% of the EPA limit 4000 µg/L worst single sample: 960 µg/L	30/45	SYR4	2012–2019
Arsenic	4.57 µg/L 46% of the EPA limit 10 µg/L worst single sample: 4.68 µg/L	27/38	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	27/27	LCR	2024
Nitrate	1532.28 µg/L 15% of the EPA limit 10000 µg/L	12/102	SYR4	2012–2019
Lead	47.8 µg/L 319% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 83 µg/L	11/41	SYR4	2012–2019
Combined Uranium	2.67008 µg/L 8.9% of the EPA limit 30 µg/L worst single sample: 2.831 µg/L	9/23	SYR4	2012–2019
Chromium	92.115 µg/L 92% of the EPA limit 100 µg/L worst single sample: 103 µg/L	8/40	SYR4	2012–2019
Dibromoacetic Acid	1.45 µg/L No EPA limit set worst single sample: 1.5 µg/L	6/32	SYR4	2019
Bromate	2.66 µg/L 27% of the EPA limit 10 µg/L worst single sample: 2.7 µg/L	5/54	SYR4	2012–2019
Monochloroacetic Acid	2.99 µg/L No EPA limit set worst single sample: 3 µg/L	3/32	SYR4	2019
Cadmium	2.245 µg/L 45% of the EPA limit 5 µg/L worst single sample: 2.3 µg/L	2/38	SYR4	2012–2019
Nitrate-Nitrite	985650 µg/L 9857% of the EPA limit, at the 95th percentile of samples — 10000 µg/L worst single sample: 1000000 µg/L	2/38	SYR4	2012–2019
Copper	55 µg/L 4.2% of the EPA limit 1300 µg/L	1/42	SYR4	2012–2019
Di(2-ethylhexyl) Phthalate	3.8 µg/L 63% of the EPA limit 6 µg/L	1/18	SYR4	2012–2019
Trichloroethylene	0.9700 µg/L 19% of the EPA limit 5 µg/L	1/36	SYR4	2012–2019

91 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SCHOENBERGER, BETH
Phone: 707-648-5439
Email: [email protected]

Frequently asked questions about City of Vallejo

Is City of Vallejo tap water safe to drink?

EPA monitoring detected 22 contaminants in City of Vallejo'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 City of Vallejo's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, TTHM, and others. The full list with the level and data source for each is above.

How many people does City of Vallejo serve?

City of Vallejo reports serving 121,420 people in California, per its EPA record.

Has City of Vallejo had any water quality violations?

The EPA has 11 violations on file for City of Vallejo, of which 9 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.