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Water Quality Lookup / California / Los Angeles County / SAN GABRIEL VALLEY WATER CO-MONTEBELLO 1
EPA SDWIS ยท Los Angeles County, California

SAN GABRIEL VALLEY WATER CO-MONTEBELLO 1 Water Quality Report

Serving roughly 9,630 people in Los Angeles County, California.

Data current as of July 2026
๐Ÿ”Straight from EPA
๐ŸงชReal Lab Results
๐Ÿ“…Updated Quarterly
๐Ÿ Local Expertise
Results for SAN GABRIEL VALLEY WATER CO-MONTEBELLO 1

1 water provider directly on file, serving roughly 9,630 people in Los Angeles County, California.

Quick answer: SAN GABRIEL VALLEY WATER CO-MONTEBELLO 1 has no violations on file and no single reading stands out against its peers (601 other providers in this area). It serves roughly 9,630 people, and the full breakdown below reflects everything EPA and California have on record for it.
Utility SAN GABRIEL VALLEY WATER CO-MONTEBELLO 1 Population served 9,630 Owner Private
No violations on file

Contaminants found

Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2025
Copper, Free
Detected: 220 UG/L (ppb)
9/18/2025
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
LeadPartialYesPartial
ArsenicPartialYesPartial
Chromium-6 (Hexavalent)PartialYesPartial
CopperPartialYesPartial
Combined UraniumPartialYesPartial
PFOAPartialYes*Partial
PFOSPartialYes*Partial
NitratePartialYesPartial
Combined RadiumPartialYesPartial
Copper, FreePartialYesPartial
Coliform Bacteria (indicator)NoYesNo

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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?