DUNSMUIR is served by 1 water provider on file with the EPA.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for DUNSMUIR, CA
1 water provider on file serving this city.
Quick answer: DUNSMUIR's water 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 — see the violation detail below for what EPA's enforcement record shows.
Lead Summary
Copper Summary
Lead
Copper, Free
Nitrate
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: 0.00655 mg/L (ppm)
12/31/2025
Copper Summary
Detected: 1.62 mg/L (ppm)
12/31/1994
Lead
Detected: 1.67 UG/L (ppb)
10/2/2025
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: 793 UG/L (ppb)
10/2/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 0.25 MG/L (ppm)
9/2/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Filtration considerations: General system types, not a specific product recommendation.