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Water Quality Lookup / California / Merced County / WINTON WATER & SANITARY DIST
EPA SDWIS ยท Merced County, California

WINTON WATER & SANITARY DIST Water Quality Report

Serving roughly 9,745 people in Merced County, California.

Data current as of July 2026
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๐ŸงชReal Lab Results
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Results for WINTON WATER & SANITARY DIST

1 water provider directly on file, serving roughly 9,745 people in Merced County, California.

Quick answer: WINTON WATER & SANITARY DIST currently has an open health-based violation on file: Lead And Copper Rule Revisions, a compliance issue since 10/17/2024. This is active, not historical โ€” see the violation detail below for what EPA's enforcement record shows.
Utility WINTON WATER & SANITARY DIST Population served 9,745 Owner Local government
Open violation on file

Violations on file

Lead And Copper Rule Revisions
Currently open health violation
Found at 1 of 1 provider

Contaminants found

Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2025
Lead
Detected: 22 UG/L (ppb)
9/10/2025
A metal that can leach from old pipes, solder, and fixtures. Current medical guidance holds there is no truly safe level of lead exposure, especially for children and pregnant women.
Copper, Free
Detected: 670 UG/L (ppb)
9/10/2025
Chromium, Hex
Detected: 3 UG/L (ppb)
1/7/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 6.1 MG/L (ppm)
4/8/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Gross Alpha Particle Activity
Detected: 1.92 PCI/L
7/15/2025
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
1, 2, 3-Trichloropropane
Detected: 0.15 UG/L (ppb)
10/7/2025
Other
Additional substances tested that don't fit neatly into the categories above
1, 2-Dibromo-3-Chloropropane
Detected: 0.025 UG/L (ppb)
7/3/2025
Filtration considerations: See the table below for how whole-house carbon, under-sink reverse osmosis, and under-sink carbon systems compare against what's actually on file here. These are general system types, not a specific product recommendation.
Contaminant Whole-House Carbon Under-Sink RO Under-Sink Carbon
Total Trihalomethanes (TTHM)YesYesYes
Haloacetic Acids (HAA5)YesYesYes
ChloroformYesYesYes
Chlorine / TasteYesYesYes
Sediment / TurbidityYesYesYes
TrichloroethyleneYesYesYes
TetrachloroethyleneYesYesYes
cis-1,2-DichloroethyleneYesYesYes
1,1-DichloroethyleneYesYesYes
BromoformYesYesYes
BromodichloromethaneYesYesYes
DibromochloromethaneYesYesYes
1,1,2-TrichloroethaneYesYesYes
Vinyl ChlorideYesYesYes
Carbon TetrachlorideYesYesYes
BenzeneYesYesYes
TolueneYesYesYes
XyleneYesYesYes
1, 2, 3-TrichloropropaneYesYesYes
LeadPartialYesPartial
ArsenicPartialYesPartial
Chromium-6 (Hexavalent)PartialYesPartial
CopperPartialYesPartial
Combined UraniumPartialYesPartial
PFOAPartialYes*Partial
PFOSPartialYes*Partial
NitratePartialYesPartial
Combined RadiumPartialYesPartial
Copper, FreePartialYesPartial
1, 2-Dibromo-3-ChloropropanePartialYesPartial
Chromium, HexPartialYesPartial
Coliform Bacteria (indicator)NoYesNo
Gross Alpha Particle ActivityNoNoNo

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What is TTHM? Understanding EPA Violation Status Is Chromium-6 Dangerous? Whole-House vs. Under-Sink Filtration Lead and Copper in Drinking Water What is PFAS? Arsenic and Uranium Explained Nitrate and Fluoride Explained Water Hardness, pH, and Turbidity What is Coliform Bacteria?