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Tap water quality report

San Joaquin County - Wilkinson Manor

EPA monitoring tested this supplier for 52 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

52
contaminants tested
17
detected
851
people served
5
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Local government
Counties served
San Joaquin

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
6
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2001-08-01 → 2001-08-31
MCL Health-based Resolved 2001-08-01 → 2001-08-31
MCL Health-based Resolved 1995-03-01 → 1995-03-31
MCL Health-based Resolved 1995-03-01 → 1995-03-31
MCL Health-based Resolved 1995-03-01 → 1995-03-31
MR Monitoring Resolved 1993-07-01 → 2000-03-01

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
5695.2 µg/L 57%
of the EPA limit 10000 µg/L
 46/46 SYR4 2012–2019
Tetrachloroethylene
21.9 µg/L 438%
of the EPA limit, in the worst sample — 5 µg/L
 15/17 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2021
cis-1,2-Dichloroethylene
2.8 µg/L 4%
of the EPA limit 70 µg/L
 11/17 SYR4 2012–2019
Trichloroethylene
1.2 µg/L 24%
of the EPA limit 5 µg/L
 6/17 SYR4 2012–2019
TTHM
4 µg/L 5%
of the EPA limit 80 µg/L
 5/23 SYR4 2012–2019
Dibromochloromethane
2 µg/L
No EPA limit set
 4/26 SYR4 2012–2019
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 3/4 SYR4 2013–2019
Barium
162 µg/L 8.1%
of the EPA limit 2000 µg/L
 3/4 SYR4 2013–2019
Bromodichloromethane
0.7000 µg/L
No EPA limit set
 3/26 SYR4 2012–2019
Bromoform
2 µg/L
No EPA limit set
 3/26 SYR4 2012–2019
Nitrate-Nitrite
5100 µg/L 51%
of the EPA limit 10000 µg/L
 3/3 SYR4 2016–2019
Chromium
10 µg/L 10%
of the EPA limit 100 µg/L
 2/4 SYR4 2013–2019
Dibromoacetic Acid
1 µg/L
No EPA limit set
 2/11 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
1 µg/L 1.7%
of the EPA limit 60 µg/L
 2/11 SYR4 2014–2019
Combined Uranium
14.453 µg/L 48%
of the EPA limit 30 µg/L
 1/1 SYR4 2018
Selenium
1 µg/L 2%
of the EPA limit 50 µg/L
 1/4 SYR4 2013–2019
35 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAsbestosBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbon TetrachlorideChloroformDichloromethaneDichloroacetic AcidEthylene DibromideEthylbenzeneFluorideLeadMercuryMonobromoacetic AcidMonochloroacetic AcidNitriteStyreneThallium, TotalTolueneTrichloroacetic AcidVinyl ChlorideXylenes, TotalO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
IRONS, CLINTON
Phone
209-468-3090
Email
cirons@sjgov.org

Frequently asked questions about San Joaquin County - Wilkinson Manor

Is San Joaquin County - Wilkinson Manor tap water safe to drink?

EPA monitoring detected 17 contaminants in San Joaquin County - Wilkinson Manor'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 San Joaquin County - Wilkinson Manor's water?

EPA monitoring detected Nitrate, Tetrachloroethylene, Lead, cis-1,2-Dichloroethylene, Trichloroethylene, and others. The full list with the level and data source for each is above.

How many people does San Joaquin County - Wilkinson Manor serve?

San Joaquin County - Wilkinson Manor reports serving 851 people in California, per its EPA record.

Has San Joaquin County - Wilkinson Manor had any water quality violations?

The EPA has 6 violations on file for San Joaquin County - Wilkinson Manor, 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.