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States → California

WINTON WATER & SANITARY DIST

PWS ID: CA2410010 · WINTON, California 95388

Population Served
9,745
Total Violations
15
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
2,831
County
Merced
School/Daycare
No
MCL Violations
8
Monitoring Violations
4
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 6 1996
Nitrate MR 4 2019
1,2-DIBROMO-3-CHLOROPROPANE MCL 2 1989
LEAD AND COPPER RULE REVISIONS TT 1 2024
LEAD AND COPPER RULE REVISIONS RPT 1 2024

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 180 samples detected PFAS.

Contaminant Date Result MRL Status
PFBS 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/1/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/1/2023 <0.02 µg/L 0.02 µg/L Not Detected
8:2 FTS 5/1/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 5/1/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 5/1/2023 <9 µg/L 9 µg/L Not Detected
PFTA 5/1/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 5/1/2023 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 5/1/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFPeS 5/1/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/1/2023 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/1/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/1/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/1/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 5/1/2023 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 5/1/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/1/2023 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 5/1/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFOS 5/1/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFMPA 5/1/2023 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 5/1/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/1/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/1/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFHpS 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 5/1/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFPeS 5/1/2023 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 5/1/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 5/1/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/1/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/1/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 5/1/2023 <9 µg/L 9 µg/L Not Detected
PFDoA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/1/2023 <0.003 µg/L 0.003 µg/L Not Detected
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.