Rio Dell, CA tap water
Supplied by City of Rio Dell. Here's what its water means for your fish.
Disinfectant
Chlorine
Your water is treated with chlorine. It slowly gases off from standing water, and any water conditioner removes it.
Safety for fish and shrimp
Nitrate (NO₃)
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
0.04 ppm (Low)
Low. Water that sits in household pipes overnight can carry more than this.
From California Water Board lab results (2023).
Water chemistry
General hardness
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
Carbonate hardness (alkalinity)
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
pH
6.9–7.7
Typical 6.9
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data, measured before treatment (2015–2017).
Who supplies Rio Dell, CA
City of Rio Dell
Serves all residents · Lake or river water · Chlorine
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.