Is Lompoc-City Water Utility Div Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2009-10-01 → 2009-10-31
TT	Health-based	Resolved	2009-10-01 → 2009-10-31
TT	Health-based	Resolved	1996-01-01 → 1996-12-31
TT	Health-based	Resolved	1996-01-01 → 1996-12-31
TT	Health-based	Resolved	1993-07-01 → 1993-07-31
TT	Health-based	Resolved	1993-07-01 → 1993-07-31

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
Arsenic	13.5 µg/L 135% of the EPA limit, at the 95th percentile of samples — 10 µg/L worst single sample: 23 µg/L	256/304	SYR4	2012–2019
Fluoride	400 µg/L 10% of the EPA limit 4000 µg/L worst single sample: 500 µg/L	93/99	SYR4	2012–2019
Barium	82.61 µg/L 4.1% of the EPA limit 2000 µg/L worst single sample: 84.6 µg/L	64/99	SYR4	2012–2019
Selenium	10 µg/L 20% of the EPA limit 50 µg/L	53/99	SYR4	2012–2019
Nitrate	605 µg/L 6.1% of the EPA limit 10000 µg/L worst single sample: 700 µg/L	40/586	SYR4	2012–2019
Chromium	13.3 µg/L 13% of the EPA limit 100 µg/L worst single sample: 15 µg/L	35/99	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	35/35	LCR	2025
TTHM	36 µg/L 45% of the EPA limit 80 µg/L worst single sample: 44.7 µg/L	21/21	SYR4	2013–2019
Chloroform	3.1 µg/L No EPA limit set worst single sample: 5 µg/L	20/21	SYR4	2013–2019
Bromodichloromethane	7.48 µg/L No EPA limit set worst single sample: 9.4 µg/L	17/21	SYR4	2013–2019
Dibromochloromethane	15.87 µg/L No EPA limit set worst single sample: 17.9 µg/L	15/21	SYR4	2013–2019
Bromoform	13.165 µg/L No EPA limit set worst single sample: 15.2 µg/L	12/21	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	7 µg/L 12% of the EPA limit 60 µg/L	12/21	SYR4	2013–2019
Dibromoacetic Acid	6 µg/L No EPA limit set	10/21	SYR4	2013–2019
Nitrate-Nitrite	200000 µg/L 2000% of the EPA limit, at the 95th percentile of samples — 10000 µg/L	10/99	SYR4	2012–2019
Cadmium	0.5000 µg/L 10% of the EPA limit 5 µg/L	8/99	SYR4	2012–2019
Combined Uranium	7.30845 µg/L 24% of the EPA limit 30 µg/L worst single sample: 7.8374 µg/L	6/6	SYR4	2012–2018
Dichloroacetic Acid	2.8 µg/L No EPA limit set worst single sample: 3 µg/L	5/21	SYR4	2013–2019
Lead	1.025 µg/L 6.8% of the EPA limit 15 µg/L worst single sample: 1.1 µg/L	4/99	SYR4	2012–2019
Mercury	0.2110 µg/L 11% of the EPA limit 2 µg/L worst single sample: 0.2200 µg/L	2/99	SYR4	2012–2019
Lithium	40.5 µg/L No EPA limit set	2/6	UCMR-5	2024
Copper	10 µg/L 0.8% of the EPA limit 1300 µg/L	1/99	SYR4	2012–2019
Monobromoacetic Acid	2 µg/L No EPA limit set	1/21	SYR4	2013–2019
Trichloroacetic Acid	1 µg/L No EPA limit set	1/21	SYR4	2013–2019

60 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBenzeneBeryllium, TotalChlorobenzeneCyanideCarbon TetrachlorideDichloromethaneEthylbenzeneHfpo-DaLassoMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: RYAN, SHAUN
Phone: 805-875-8701
Email: s_ryan@ci.lompoc.ca.us

Frequently asked questions about Lompoc-City Water Utility Div

Is Lompoc-City Water Utility Div tap water safe to drink?

EPA monitoring detected 24 contaminants in Lompoc-City Water Utility Div'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 Lompoc-City Water Utility Div's water?

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

How many people does Lompoc-City Water Utility Div serve?

Lompoc-City Water Utility Div reports serving 40,473 people in California, per its EPA record.

Has Lompoc-City Water Utility Div had any water quality violations?

The EPA has 6 violations on file for Lompoc-City Water Utility Div, of which 6 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.