Dunsmuir, CA tap water
Supplied by City of Dunsmuir. Here's what its water means for your fish.
Disinfectant
Not confirmed
We couldn't confirm how your water is disinfected. US utilities use chlorine or chloramine, and chloramine doesn't gas off when water sits out.
Safety for fish and shrimp
Nitrate (NO₃)
1.1 ppm (Low)
Low, so water changes lower your tank's nitrate well.
From California Water Board lab results, measured before treatment (2025).
Copper at home taps
0.3 ppm (Worth knowing)
Shrimp and snails are sensitive to copper. Water that sits in household pipes picks up the most; it drops once the tap has run for a minute.
From California Water Board lab results (2025).
Water chemistry
General hardness
Area estimate33–346 ppm
Typical 125 ppm
Moderately soft to medium. Suits most community fish and plants.
Area estimate from nearby wells: USGS well samples in your county (2005–2020).
Carbonate hardness (alkalinity)
Area estimate74–380 ppm
Typical 165 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
Area estimate from nearby wells: USGS well samples in your county (2003–2020).
pH
Area estimate6.8–8.4
Typical 7.2
Most community fish do well here. Stable water matters more than the exact number.
Area estimate from nearby wells: USGS well samples in your county (2002–2020).
Total dissolved solids
Area estimate64–464 ppm
Typical 132 ppm
A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.
Area estimate from nearby wells: USGS well samples in your county (2003–2020).
Who supplies Dunsmuir, CA
City of Dunsmuir
Serves all residents · Groundwater (wells) · Disinfectant not listed
Our data comes from public records and is still incomplete. Many utilities don't publish every number, so we're adding more all the time. Your city's range is a starting point: testing your own tap is the only way to know exactly what's in it.
Tap water lookup covers US cities only for now. Want to know why it matters? Read our story on tap water.
Compiled by Shoal & Stem from public records. Free to cite with a link.