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Tap water quality report

Oid #22 - Williams Tract

EPA monitoring tested this supplier for 42 contaminants and detected 3. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

42
contaminants tested
3
detected
150
people served
5
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Local government
Counties served
Stanislaus

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.

5
health-based violations
7
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1997-05-01 → 1997-05-31
MCL Health-based Resolved 1997-05-01 → 1997-05-31
MCL Health-based Resolved 1997-05-01 → 1997-05-31
MCL Health-based Resolved 1996-05-01 → 1996-05-31
MCL Health-based Resolved 1996-05-01 → 1996-05-31
MR Monitoring Archived 1981-10-01 → 1982-09-30
MR Monitoring Archived 1980-10-30 → 1981-10-29

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
3500.74 µg/L 35%
of the EPA limit 10000 µg/L
worst single sample: 3864.6 µg/L
62/62 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 4/4 LCR 2023
Nitrate-Nitrite
2100 µg/L 21%
of the EPA limit 10000 µg/L
 1/1 SYR4 2017
39 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicAtrazineBariumBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbon TetrachlorideChromiumDichloromethaneEthylene DibromideEthylbenzeneFluorideLassoLeadMercuryNitriteSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MOODY, SCOT
Phone
209-840-5508
Email
smoody@oakdaleirrigation.com

Frequently asked questions about Oid #22 - Williams Tract

Is Oid #22 - Williams Tract tap water safe to drink?

EPA monitoring detected 3 contaminants in Oid #22 - Williams Tract'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 Oid #22 - Williams Tract's water?

EPA monitoring detected Nitrate, Lead, Nitrate-Nitrite. The full list with the level and data source for each is above.

How many people does Oid #22 - Williams Tract serve?

Oid #22 - Williams Tract reports serving 150 people in California, per its EPA record.

Has Oid #22 - Williams Tract had any water quality violations?

The EPA has 7 violations on file for Oid #22 - Williams Tract, of which 5 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.