Dixon, CA tap water
Supplied mostly by City of Dixon, plus 1 other utility. Here's what the 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
Nitrite (NO₂)
Not detected (Low)
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From California Water Board lab results (2024–2026).
Nitrate (NO₃)
9.3–29 ppm (Worth knowing)
Typical 18 ppm
Water changes can't take your tank's nitrate below this level.
From California Water Board lab results, measured before treatment; California Water Board lab results (2023–2026).
Copper at home taps
0.08–0.09 ppm (Low)
Typical 0.09 ppm
Low. Water that sits in household pipes overnight can carry more than this.
From California Water Board lab results (2024–2025).
Water chemistry
General hardness
110–430 ppm
Typical 180 ppm
Moderately hard. Great for livebearers, and most community fish adapt.
From California Water Board lab results, measured before treatment (2023–2026).
Carbonate hardness (alkalinity)
210–420 ppm
Typical 220 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From California Water Board lab results, measured before treatment (2023–2026).
pH
7.7–8.1
Typical 8
Most community fish do well here. Stable water matters more than the exact number.
From California Water Board lab results, measured before treatment; California Water Board lab results (2024–2026).
Total dissolved solids
300–570 ppm
Typical 340 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 California Water Board lab results, measured before treatment (2023–2026).
Who supplies Dixon, CA
City of Dixon
Serves 70% of residents · Groundwater (wells) · Chlorine
California Water Service Co. - Dixon
Serves 26% of residents · Groundwater (wells) · 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.