SAN GABRIEL VALLEY WC - FONTANA Water Quality Report
Serving roughly 237,700 people in San Bernardino County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for SAN GABRIEL VALLEY WC - FONTANA
1 water provider directly on file, serving roughly 237,700 people in San Bernardino County, California.
Quick answer: SAN GABRIEL VALLEY WC - FONTANA has no violations on file and no single reading stands out against its peers (669 other providers in this area). It serves roughly 237,700 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
Chromium, Hex
Nitrate
Dichlorodifluoromethane
Perchlorate
Alkalinity, Total
Alkalinity, Bicarbonate
Carbon, Total
Chloride
Sulfate
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Utility SAN GABRIEL VALLEY WC - FONTANAPopulation served 237,700Owner 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)
12/31/2024
Chromium, Hex
Detected: 0.14 UG/L (ppb)
2/18/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 6.7 UG/L (ppb)
7/14/2025
TTHM
Detected: 22 UG/L (ppb)
7/14/2025
A group of disinfection byproducts formed when chlorine reacts with organic matter. Long-term exposure above the legal limit has been linked to increased cancer risk in some studies.
Chloroform
Detected: 5.4 UG/L (ppb)
7/14/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 2.5 UG/L (ppb)
7/14/2025
Bromodichloromethane
Detected: 6.6 UG/L (ppb)
7/14/2025
Dibromochloromethane
Detected: 7.2 UG/L (ppb)
7/14/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 4 MG/L (ppm)
9/29/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Chloride
Detected: 14 MG/L (ppm)
9/22/2025
Sulfate
Detected: 15 MG/L (ppm)
9/22/2025
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
Dichlorodifluoromethane
Detected: 0.57 UG/L (ppb)
9/29/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 100 MG/L (ppm)
10/8/2025
Other
Additional substances tested that don't fit neatly into the categories above
Perchlorate
Detected: 5.6 UG/L (ppb)
9/22/2025
Can occur naturally or from industrial/military sources; may interfere with thyroid function at elevated levels.
Alkalinity, Total
Detected: 86 MG/L (ppm)
10/8/2025
Carbon, Total
Detected: 2.5 MG/L (ppm)
10/8/2025
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.