Is Olivehurst Public U.D. Tap Water Safe? Quality Report

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

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	2007-05-01 → 2007-05-31
MCL	Health-based	Resolved	2007-05-01 → 2007-05-31
MCL	Health-based	Resolved	2006-08-01 → 2006-08-31
MCL	Health-based	Resolved	2006-08-01 → 2006-08-31
MON	Monitoring	Resolved	2022-01-01 → 2022-01-31
MON	Monitoring	Resolved	2022-01-01 → 2022-01-31
MR	Monitoring	Resolved	2006-02-01 → 2006-02-28
MR	Monitoring	Resolved	2006-02-01 → 2006-02-28
MR	Monitoring	Resolved	2006-01-01 → 2006-01-31
MR	Monitoring	Resolved	2006-01-01 → 2006-01-31

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
TTHM	8.56 µg/L 11% of the EPA limit 80 µg/L worst single sample: 9.45 µg/L	45/72	SYR4	2012–2019
Bromoform	4.4465 µg/L No EPA limit set worst single sample: 5.11 µg/L	42/71	SYR4	2012–2019
Dibromochloromethane	2.5705 µg/L No EPA limit set worst single sample: 2.72 µg/L	32/70	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	22/22	LCR	2023
Fluoride	470 µg/L 12% of the EPA limit 4000 µg/L worst single sample: 1600 µg/L	21/23	SYR4	2012–2015
Total Haloacetic Acids (HAA5)	11 µg/L 18% of the EPA limit 60 µg/L worst single sample: 30.4 µg/L	21/62	SYR4	2013–2019
Nitrate	3600 µg/L 36% of the EPA limit 10000 µg/L	20/118	SYR4	2012–2019
Dibromoacetic Acid	1.625 µg/L No EPA limit set worst single sample: 1.7 µg/L	16/62	SYR4	2013–2019
Bromodichloromethane	1.982 µg/L No EPA limit set worst single sample: 2.19 µg/L	14/69	SYR4	2012–2019
cis-1,2-Dichloroethylene	0.9830 µg/L 1.4% of the EPA limit 70 µg/L worst single sample: 1.1 µg/L	14/24	SYR4	2012–2019
Chloroform	1.672 µg/L No EPA limit set worst single sample: 1.73 µg/L	5/70	SYR4	2012–2019
Trichloroacetic Acid	14.92 µg/L No EPA limit set worst single sample: 17.7 µg/L	5/62	SYR4	2013–2019
Arsenic	5.27 µg/L 53% of the EPA limit 10 µg/L worst single sample: 5.3 µg/L	4/20	SYR4	2012–2019
Dichloroacetic Acid	11.875 µg/L No EPA limit set worst single sample: 12.7 µg/L	4/62	SYR4	2013–2019
Lead	24.955 µg/L 166% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 26 µg/L	2/3	SYR4	2012–2015
Xylenes, Total	2.122 µg/L 0% of the EPA limit 10000 µg/L worst single sample: 2.2 µg/L	2/24	SYR4	2012–2019
Barium	100 µg/L 5% of the EPA limit 2000 µg/L	1/5	SYR4	2012–2017
Copper	83 µg/L 6.4% of the EPA limit 1300 µg/L	1/4	SYR4	2012–2017
Dichloromethane	0.6900 µg/L 14% of the EPA limit 5 µg/L	1/24	SYR4	2012–2019
Ethylbenzene	0.6000 µg/L 0.1% of the EPA limit 700 µg/L	1/24	SYR4	2012–2019

58 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, TotalBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChromiumHfpo-DaMercuryMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitrate-NitriteNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: TILLOTSON, JOHN
Phone: 530-743-8573
Email: jtillotson@opud.org

Frequently asked questions about Olivehurst Public U.D.

Is Olivehurst Public U.D. tap water safe to drink?

EPA monitoring detected 20 contaminants in Olivehurst Public U.D.'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 Olivehurst Public U.D.'s water?

EPA monitoring detected TTHM, Bromoform, Dibromochloromethane, Lead, Fluoride, and others. The full list with the level and data source for each is above.

How many people does Olivehurst Public U.D. serve?

Olivehurst Public U.D. reports serving 16,595 people in California, per its EPA record.

Has Olivehurst Public U.D. had any water quality violations?

The EPA has 18 violations on file for Olivehurst Public U.D., 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.