Shoal & Stem

Loma Rica, CA tap water

About 46% of Loma Rica is inside a utility's service area. Homes outside it likely use private wells, which no utility tests.

Disinfectant

Chlorine

Utility water here is treated with chlorine. It slowly gases off from standing water, and any water conditioner removes it. 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 California Water Board lab results (2023).

Nitrate (NO₃)

Up to 8.9 ppm (Low)

Typically not detected

Not detected in testing, so water changes lower your tank's nitrate well.

From California Water Board lab results; California Water Board lab results, measured before treatment (2023–2025).

Copper at home taps

Up to 0.09 ppm (Low)

Typically not detected

Not detected in testing. Water that sits in household pipes overnight can still pick some up.

From California Water Board lab results (2023–2025).

Water chemistry

General hardness

19 ppm

Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.

From California Water Board lab results (2025).

Carbonate hardness (alkalinity)

22 ppm

Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.

From California Water Board lab results (2025).

pH

7.3

Most community fish do well here. Stable water matters more than the exact number.

From California Water Board lab results (2024).

Who supplies Loma Rica, CA

  • North Yuba Water District

    Serves 27% of residents · Lake or river water · Chlorine

  • Loma Rica Water Company

    Serves 19% 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.

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.

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