Elkhorn, CA tap water
About 30% of Elkhorn 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)
2.7–49 ppm (Low)
Typical 6.2 ppm
Water changes can't take your tank's nitrate below this level.
From California Water Board lab results, measured before treatment (2023–2026).
Copper at home taps
Up to 0.66 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 (2023–2026).
Water chemistry
General hardness
54–71 ppm
Typical 62 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 (2023–2026).
Carbonate hardness (alkalinity)
56–78 ppm
Typical 70 ppm
Moderate buffering. pH should stay fairly steady.
From California Water Board lab results, measured before treatment (2023–2026).
pH
6.9–7.3
Typical 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 (2023–2026).
Total dissolved solids
186–220 ppm
Typical 189 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; Paradise Rd WS #21's conductivity readings, measured before treatment (2023–2026).
Who supplies Elkhorn, CA
Paradise Lake Mutual Water Co.
Serves 18% of residents · Groundwater (wells) · Disinfectant not listed
Harbor View Wa
Serves 13% of residents · Groundwater (wells) · Disinfectant not listed
Leafwood Community Wa
Serves 8% of residents · Groundwater (wells) · Disinfectant not listed
Thimio Mwc
Serves 7% of residents · Groundwater (wells) · Chlorine
Paradise Rd WS #21
Serves 6% 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.