Crowley Lake, CA tap water
About 28% of Crowley Lake is inside a utility's service area. Homes outside it likely use private wells, which no utility tests.
Disinfectant
Not confirmed
We couldn't confirm how utility water here is disinfected. US utilities use chlorine or chloramine, and chloramine doesn't gas off when water sits out. Private wells aren't treated by a utility, so there's no chlorine or chloramine unless a treatment system adds it.
Safety for fish and shrimp
Nitrate (NO₃)
Up to 2.4 ppm (Low)
Typically not detected
Not detected in testing, so water changes lower your tank's nitrate well.
From California Water Board lab results, measured before treatment (2023–2025).
Copper at home taps
0.13–0.16 ppm (Worth knowing)
Typical 0.16 ppm
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 (2024–2025).
Water chemistry
General hardness
26–29 ppm
Typical 28 ppm
Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.
From California Water Board lab results, measured before treatment (2025).
Carbonate hardness (alkalinity)
47–52 ppm
Typical 50 ppm
Moderate buffering. pH should stay fairly steady.
From California Water Board lab results, measured before treatment (2025).
pH
7.2
Most community fish do well here. Stable water matters more than the exact number.
From California Water Board lab results, measured before treatment (2025).
Total dissolved solids
55–110 ppm
Typical 110 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; Crowley Lake Mutual Water Company's conductivity readings, measured before treatment (2024–2025).
Who supplies Crowley Lake, CA
Mountain Meadows Mwc
Serves 17% of residents · Groundwater (wells) · Disinfectant not listed
Crowley Lake Mutual Water Company
Serves 11% of residents · Groundwater (wells) · Disinfectant not listed
Crowley Lake Trailer Park
Serves 8% of 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.
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Compiled by Shoal & Stem from public records. Free to cite with a link.