Is Oildale Mwc Tap Water Safe? Quality Report

Water source: SWP
Ownership: Private
Counties served: Kern

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	2024-04-01 → 2024-06-30
MCL	Health-based	Resolved	2024-04-01 → 2024-06-30
MCL	Health-based	Resolved	2024-01-01 → 2024-03-31
MCL	Health-based	Resolved	2024-01-01 → 2024-03-31
MCL	Health-based	Resolved	2024-01-01 → 2024-03-31
MCL	Health-based	Resolved	2024-01-01 → 2024-03-31
MCL	Health-based	Resolved	2023-10-01 → 2023-12-31
MCL	Health-based	Resolved	2023-10-01 → 2023-12-31
MCL	Health-based	Resolved	2023-07-01 → 2023-09-30
MCL	Health-based	Resolved	2023-07-01 → 2023-09-30

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
Nitrate	13786 µg/L 138% of the EPA limit, at the 95th percentile of samples — 10000 µg/L worst single sample: 15594 µg/L	130/132	SYR4	2012–2019
Bromodichloromethane	22.95 µg/L No EPA limit set worst single sample: 41.2 µg/L	111/114	SYR4	2012–2019
Chloroform	63.35 µg/L No EPA limit set worst single sample: 81.6 µg/L	111/113	SYR4	2012–2019
TTHM	83.3 µg/L 104% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 125.7 µg/L	111/114	SYR4	2012–2019
Dichloroacetic Acid	39.065 µg/L No EPA limit set worst single sample: 48.6 µg/L	110/111	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	80.195 µg/L 134% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 103 µg/L	110/110	SYR4	2012–2019
Trichloroacetic Acid	44.52 µg/L No EPA limit set worst single sample: 55.6 µg/L	105/110	SYR4	2012–2019
Dibromochloromethane	23.85 µg/L No EPA limit set worst single sample: 48.9 µg/L	91/114	SYR4	2012–2019
Dibromoacetic Acid	7.54 µg/L No EPA limit set worst single sample: 10.8 µg/L	55/111	SYR4	2012–2019
Bromoform	10.155 µg/L No EPA limit set worst single sample: 12.8 µg/L	50/114	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	30/30	LCR	2025
Monochloroacetic Acid	2.7 µg/L No EPA limit set worst single sample: 2.8 µg/L	25/111	SYR4	2012–2019
Barium	111 µg/L 5.6% of the EPA limit 2000 µg/L worst single sample: 120 µg/L	19/19	SYR4	2012–2018
Tetrachloroethylene	13.2 µg/L 264% of the EPA limit, at the 95th percentile of samples — 5 µg/L worst single sample: 14 µg/L	17/32	SYR4	2012–2019
Monobromoacetic Acid	10.765 µg/L No EPA limit set worst single sample: 12 µg/L	14/111	SYR4	2012–2019
Fluoride	192 µg/L 4.8% of the EPA limit 4000 µg/L worst single sample: 240 µg/L	13/19	SYR4	2012–2018
Combined Uranium	24.1529 µg/L 81% of the EPA limit 30 µg/L worst single sample: 25.33 µg/L	3/3	SYR4	2013–2019
Selenium	6.02 µg/L 12% of the EPA limit 50 µg/L worst single sample: 6.4 µg/L	3/18	SYR4	2012–2018
1,2-DIBROMO-3-CHLOROPROPANE	0.0310 µg/L 16% of the EPA limit 0.2000 µg/L worst single sample: 0.0320 µg/L	2/19	SYR4	2012–2018
Arsenic	2.6 µg/L 26% of the EPA limit 10 µg/L	1/18	SYR4	2012–2018
Copper	16 µg/L 1.2% of the EPA limit 1300 µg/L	1/19	SYR4	2012–2018
Lithium	12.2 µg/L No EPA limit set	1/8	UCMR-5	2023

86 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromateChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloriteChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: NUNNELEY, RYAN
Phone: 661-399-5516
Email: [email protected]

Frequently asked questions about Oildale Mwc

Is Oildale Mwc tap water safe to drink?

EPA monitoring detected 22 contaminants in Oildale Mwc'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 Oildale Mwc's water?

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

How many people does Oildale Mwc serve?

Oildale Mwc reports serving 44,899 people in California, per its EPA record.

Has Oildale Mwc had any water quality violations?

The EPA has 23 violations on file for Oildale Mwc, of which 16 are health-based (a contaminant limit or required treatment was breached) and 1 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.