Riverbank, CA tap water
Supplied mostly by City of Riverbank, plus 1 other utility. Here's what the 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
Ammonia
0.09 ppm (Low)
Ammonia in the water as delivered. A cycled filter clears it within a day.
From California Water Board lab results (2024–2025).
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 (2023–2025).
Nitrate (NO₃)
Up to 30 ppm (Worth knowing)
Typical 16 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 (2023–2025).
Copper at home taps
Up to 0.07 ppm (Low)
Typical 0.07 ppm
Low. Water that sits in household pipes overnight can carry more than this.
From California Water Board lab results (2023–2025).
Water chemistry
General hardness
32–207 ppm
Typical 172 ppm
Moderately hard. Great for livebearers, and most community fish adapt.
From California Water Board lab results, measured before treatment; California Water Board lab results (2023–2025).
Carbonate hardness (alkalinity)
41–220 ppm
Typical 170 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From California Water Board lab results, measured before treatment; California Water Board lab results (2023–2025).
pH
7.2–7.9
Typical 7.4
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 (2023–2025).
Total dissolved solids
72–430 ppm
Typical 320 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; California Water Board lab results (2023–2025).
Who supplies Riverbank, CA
City of Riverbank
Serves 84% of residents · Groundwater (wells) · Disinfectant not listed
Modesto Irrigation District
Serves 15% of 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.
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Compiled by Shoal & Stem from public records. Free to cite with a link.