Valinda, CA tap water
Supplied by Suburban Water Systems-San Jose. Here's what its water means for your fish.
Disinfectant
Chloramine
Your water is treated with chloramine. Unlike chlorine, it doesn't gas off when water sits out, and many pitcher and fridge filters aren't rated to remove it. Conditioners that list chloramine on the label break it apart, which frees a little ammonia. Some utilities switch to plain chlorine for a few weeks a year.
Safety for fish and shrimp
Nitrate (NO₃)
15–33 ppm (Worth knowing)
Typical 16 ppm
Water changes can't take your tank's nitrate below this level.
From California Water Board lab results (2023–2026).
Copper at home taps
0.12 ppm (Worth knowing)
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 (2025).
Water chemistry
General hardness
Supplier's figure82–291 ppm
Typical 227 ppm
Hard. Ideal for livebearers and African cichlids. Soft-water species may struggle to breed.
From the utility that supplies yours: Pomona - City, Water Dept. and La Puente Valley CWD and Covina Valley Water Company - Wholesale and Metropolitan Water Dist. of So. Cal. and Valley County Water Dist. and Walnut Valley Water District, which supplies Suburban Water Systems-San Jose (2023–2026).
Carbonate hardness (alkalinity)
Supplier's figure68–220 ppm
Typical 131 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From the utility that supplies yours: Pomona - City, Water Dept. and La Puente Valley CWD and Covina Valley Water Company - Wholesale and Metropolitan Water Dist. of So. Cal. and Valley County Water Dist. and Walnut Valley Water District, which supplies Suburban Water Systems-San Jose (2023–2026).
pH
Supplier's figure7–8.7
Typical 7.9
Most community fish do well here. Stable water matters more than the exact number.
From the utility that supplies yours: Pomona - City, Water Dept. and La Puente Valley CWD and Covina Valley Water Company - Wholesale and Metropolitan Water Dist. of So. Cal. and Valley County Water Dist. and Walnut Valley Water District, which supplies Suburban Water Systems-San Jose (2023–2026).
Total dissolved solids
Supplier's figure160–666 ppm
Typical 375 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 the utility that supplies yours: Pomona - City, Water Dept. and La Puente Valley CWD and Covina Valley Water Company - Wholesale and Metropolitan Water Dist. of So. Cal. and Valley County Water Dist. and Walnut Valley Water District, which supplies Suburban Water Systems-San Jose (2023–2026).
- Suburban Water Systems-San Jose adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Valinda, CA
Suburban Water Systems-San Jose
Serves all residents · Buys water from Pomona - City, Water Dept. · Chloramine
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.