Serving roughly 3,975 people in Trinity County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
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Results for WEAVERVILLE C.S.D.
1 water provider directly on file, serving roughly 3,975 people in Trinity County, California.
Quick answer: WEAVERVILLE C.S.D. has no violations on file. One reading is worth knowing about: Lead Summary was measured at 0.0117mg/L, among the highest of the 231 providers on file in this area. It's the most notable figure in this system's record among its 231 local peers.
Lead Summary
PFHXS
PFOS
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Dichloroaceticacid
Trichloroaceticacid
Bromodichloromethane
Chromium, Hex
Utility WEAVERVILLE C.S.D.Population served 3,975Owner Local government
No violations on file
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0.0117 mg/L (ppm)
12/31/2023
Chromium, Hex
Detected: 0.14 UG/L (ppb)
1/30/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 9.28 UG/L (ppb)
1/30/2025
TTHM
Detected: 11 UG/L (ppb)
1/30/2025
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: 10 UG/L (ppb)
1/30/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 0.67 UG/L (ppb)
1/30/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
PFHXS
Detected: 0.0056 µg/L (ppb)
5/31/2023
PFOS
Detected: 0.0055 µg/L (ppb)
9/11/2024
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 4.35 UG/L (ppb)
1/30/2025
Trichloroaceticacid
Detected: 4.93 UG/L (ppb)
1/30/2025
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.