Anza, CA tap water
About 45% of Anza 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
Nitrite (NO₂)
Not detected (Low)
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2017–2018).
Nitrate (NO₃)
2.7–28 ppm (Low)
Typical 2.7 ppm
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data; California Water Board lab results, measured before treatment (2017–2026).
Copper at home taps
Up to 0.4 ppm (Worth knowing)
Typical 0.4 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 (2023–2024).
Water chemistry
General hardness
140–260 ppm
Typical 260 ppm
Hard. Ideal for livebearers and African cichlids. Soft-water species may struggle to breed.
From California Water Board lab results, measured before treatment (2024–2025).
Carbonate hardness (alkalinity)
140–170 ppm
Typical 160 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From California Water Board lab results, measured before treatment (2024–2025).
pH
7–7.8
Typical 7.5
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data; California Water Board lab results, measured before treatment (2017–2025).
Total dissolved solids
260–480 ppm
Typical 480 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 Anza, CA
Ramona Water Company
Serves 25% of residents · Groundwater (wells) · Disinfectant not listed
Anza Mutual Water Company
Serves 10% of residents · Groundwater (wells) · Disinfectant not listed
Anza Pines Mobile Home Park
Serves 7% 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.
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.