Tap WaterIndex

← California

Tap water quality report

Oid-Oakdale Rural Water System #1

EPA monitoring tested this supplier for 47 contaminants and detected 7. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

47
contaminants tested
7
detected
1,570
people served
2
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.

2
health-based violations
2
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2005-09-01 → 2005-09-30
MCL Health-based Resolved 2005-09-01 → 2005-09-30

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
6470 µg/L 65%
of the EPA limit 10000 µg/L
worst single sample: 8181.2 µg/L
304/306 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2023
Nitrate-Nitrite
606900 µg/L 6069%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 678000 µg/L
10/11 SYR4 2012–2017
Barium
110 µg/L 5.5%
of the EPA limit 2000 µg/L
 3/16 SYR4 2014–2017
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 2/16 SYR4 2014–2017
Arsenic
2.7 µg/L 27%
of the EPA limit 10 µg/L
 1/16 SYR4 2014–2017
Lead
11 µg/L 73%
of the EPA limit 15 µg/L
 1/16 SYR4 2014–2017
40 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAtrazineBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCopperCadmiumCarbon TetrachlorideChloroformChromiumDichloromethaneDibromochloromethaneEthylene DibromideEthylbenzeneLassoMercuryNitriteSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, 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-Oakdale Rural Water System #1

Is Oid-Oakdale Rural Water System #1 tap water safe to drink?

EPA monitoring detected 7 contaminants in Oid-Oakdale Rural Water System #1'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-Oakdale Rural Water System #1's water?

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

How many people does Oid-Oakdale Rural Water System #1 serve?

Oid-Oakdale Rural Water System #1 reports serving 1,570 people in California, per its EPA record.

Has Oid-Oakdale Rural Water System #1 had any water quality violations?

The EPA has 2 violations on file for Oid-Oakdale Rural Water System #1, of which 2 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.