Davis, CA tap water
Supplied by City of Davis. 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)
Supplier's figure0.4 ppm (Low)
Low, so water changes lower your tank's nitrate well.
From the utility that supplies yours: Woodland-Davis Clean Water Agency, which supplies City of Davis (2023–2026).
Copper at home taps
Not detected (Low)
Not detected in testing. Water that sits in household pipes overnight can still pick some up.
From California Water Board lab results (2025).
Water chemistry
General hardness
Supplier's figure64 ppm
Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.
From the utility that supplies yours: Woodland-Davis Clean Water Agency, which supplies City of Davis (2023–2026).
Carbonate hardness (alkalinity)
Supplier's figure77 ppm
Moderate buffering. pH should stay fairly steady.
From the utility that supplies yours: Woodland-Davis Clean Water Agency, which supplies City of Davis (2023–2026).
pH
Supplier's figure7.8
Most community fish do well here. Stable water matters more than the exact number.
From the utility that supplies yours: Woodland-Davis Clean Water Agency, which supplies City of Davis (2023–2026).
Total dissolved solids
Supplier's figure120 ppm
A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.
From the utility that supplies yours: Woodland-Davis Clean Water Agency, which supplies City of Davis (2023–2026).
Who supplies Davis, CA
City of Davis
Serves all residents · Buys water from Woodland-Davis Clean Water Agency · 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.
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Compiled by Shoal & Stem from public records. Free to cite with a link.