Tap WaterIndex

← California

Tap water quality report

a1 Winstons Mobile Home Park

EPA monitoring tested this supplier for 40 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

40
contaminants tested
12
detected
75
people served
10
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
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.

10
health-based violations
16
violations on file
2
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2026-03-01 → 2026-03-31
TT Health-based Unaddressed 2024-10-17
MCL Health-based Resolved 2015-02-01 → 2015-02-28
MCL Health-based Resolved 2015-02-01 → 2015-02-28
MCL Health-based Resolved 2013-08-01 → 2013-08-31
MCL Health-based Resolved 2013-08-01 → 2013-08-31
MCL Health-based Resolved 2006-04-01 → 2006-04-30
MCL Health-based Resolved 2006-04-01 → 2006-04-30
MCL Health-based Resolved 2005-01-01 → 2005-01-31
MCL Health-based Resolved 2005-01-01 → 2005-01-31

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
3800 µg/L 38%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2024
Arsenic
9 µg/L 90%
of the EPA limit 10 µg/L
 4/4 SYR4 2014–2019
Barium
168 µg/L 8.4%
of the EPA limit 2000 µg/L
 2/2 SYR4 2014–2017
Combined Uranium
9.8936 µg/L 33%
of the EPA limit 30 µg/L
 2/2 SYR4 2012–2018
Copper
113 µg/L 8.7%
of the EPA limit 1300 µg/L
 1/2 SYR4 2014–2017
Chromium
6 µg/L 6%
of the EPA limit 100 µg/L
 1/2 SYR4 2014–2017
Lead
11.8 µg/L 79%
of the EPA limit 15 µg/L
 1/2 SYR4 2014–2017
Nitrate-Nitrite
3600 µg/L 36%
of the EPA limit 10000 µg/L
 1/1 SYR4 2017
Selenium
2 µg/L 4%
of the EPA limit 50 µg/L
 1/2 SYR4 2014–2017
Tetrachloroethylene
0.9000 µg/L 18%
of the EPA limit 5 µg/L
 1/1 SYR4 2015
Trichloroethylene
1 µg/L 20%
of the EPA limit 5 µg/L
 1/1 SYR4 2015
28 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideDichloromethaneEthylene DibromideEthylbenzeneFluorideMercuryNitriteStyreneThallium, TotalTolueneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MOBILE HOME PARK, A-1 WINSTONS
Phone
209-923-3964
Email
a1winston3460@gmail.com

Frequently asked questions about a1 Winstons Mobile Home Park

Is a1 Winstons Mobile Home Park tap water safe to drink?

EPA monitoring detected 12 contaminants in a1 Winstons Mobile Home Park'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 a1 Winstons Mobile Home Park's water?

EPA monitoring detected Nitrate, Lead, Arsenic, Barium, Combined Uranium, and others. The full list with the level and data source for each is above.

How many people does a1 Winstons Mobile Home Park serve?

a1 Winstons Mobile Home Park reports serving 75 people in California, per its EPA record.

Has a1 Winstons Mobile Home Park had any water quality violations?

The EPA has 16 violations on file for a1 Winstons Mobile Home Park, of which 10 are health-based (a contaminant limit or required treatment was breached) and 2 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.