Serving roughly 49,616 people in Yolo County, California.
Data current as of July 2026
🔍Straight from EPA
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Results for UC - DAVIS
1 water provider directly on file, serving roughly 49,616 people in Yolo County, California.
Quick answer: UC - DAVIS has no violations on file and no single reading stands out against its peers (218 other providers in this area). It serves roughly 49,616 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
Lithium
Nitrate
Chromium, Hex
Utility UC - DAVISPopulation served 49,616Owner State or Territorial Government
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)
12/31/2023
Chromium, Hex
Detected: 3.1 UG/L (ppb)
8/26/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 0.49 MG/L (ppm)
2/19/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 13 µg/L (ppb)
10/11/2023
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
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.