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Tap water quality report

Oildale Mwc

EPA monitoring tested this supplier for 108 contaminants and detected 22. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
22
detected
44,899
people served
16
health-based violations
California rankingsLead in CaliforniaPFAS in California
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.

16
health-based violations
23
violations on file
1
still open
ViolationTypeStatusPeriod
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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
15594 µg/L 156%
of the EPA limit, in the worst sample — 10000 µg/L
 130/132 SYR4 2012–2019
Bromodichloromethane
41.2 µg/L
No EPA limit set
 111/114 SYR4 2012–2019
Chloroform
81.6 µg/L
No EPA limit set
 111/113 SYR4 2012–2019
TTHM
125.7 µg/L 157%
of the EPA limit, in the worst sample — 80 µg/L
 111/114 SYR4 2012–2019
Dichloroacetic Acid
48.6 µg/L
No EPA limit set
 110/111 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
103 µg/L 172%
of the EPA limit, in the worst sample — 60 µg/L
 110/110 SYR4 2012–2019
Trichloroacetic Acid
55.6 µg/L
No EPA limit set
 105/110 SYR4 2012–2019
Dibromochloromethane
48.9 µg/L
No EPA limit set
 91/114 SYR4 2012–2019
Dibromoacetic Acid
10.8 µg/L
No EPA limit set
 55/111 SYR4 2012–2019
Bromoform
12.8 µg/L
No EPA limit set
 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
2.8 µg/L
No EPA limit set
 25/111 SYR4 2012–2019
Barium
120 µg/L 6%
of the EPA limit 2000 µg/L
 19/19 SYR4 2012–2018
Tetrachloroethylene
14 µg/L 280%
of the EPA limit, in the worst sample — 5 µg/L
 17/32 SYR4 2012–2019
Monobromoacetic Acid
12 µg/L
No EPA limit set
 14/111 SYR4 2012–2019
Fluoride
240 µg/L 6%
of the EPA limit 4000 µg/L
 13/19 SYR4 2012–2018
Combined Uranium
25.33 µg/L 84%
of the EPA limit 30 µg/L
 3/3 SYR4 2013–2019
Selenium
6.4 µg/L 13%
of the EPA limit 50 µg/L
 3/18 SYR4 2012–2018
1,2-DIBROMO-3-CHLOROPROPANE
0.0320 µg/L 16%
of the EPA limit 0.2000 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
rnunneley@oildalewater.com

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.