Hesperia, CA tap water
Supplied by Hesperia WD. 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)
Up to 7.5 ppm (Low)
Typical 2.8 ppm
Low, so water changes lower your tank's nitrate well.
From California Water Board lab results, measured before treatment (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
39–120 ppm
Typical 75 ppm
Moderately soft to medium. Suits most community fish and plants.
From California Water Board lab results, measured before treatment (2024–2025).
Carbonate hardness (alkalinity)
72–98 ppm
Typical 85 ppm
Moderate buffering. pH should stay fairly steady.
From California Water Board lab results, measured before treatment (2023–2025).
pH
7.3–8
Typical 7.9
Most community fish do well here. Stable water matters more than the exact number.
From California Water Board lab results, measured before treatment (2024–2025).
Total dissolved solids
110–220 ppm
Typical 140 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 (2024–2025).
Who supplies Hesperia, CA
Hesperia WD
Serves 98% 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.
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Compiled by Shoal & Stem from public records. Free to cite with a link.