Madera Ranchos, CA tap water
Supplied by Madera Co MD10A-Madera Ranchos. Here's what its water means for your fish.
Disinfectant
Not confirmed
We couldn't confirm how your water is disinfected. US utilities use chlorine or chloramine, and chloramine doesn't gas off when water sits out.
Safety for fish and shrimp
Nitrate (NO₃)
4.2–15 ppm (Worth knowing)
Typical 13 ppm
Water changes can't take your tank's nitrate below this level.
From California Water Board lab results, measured before treatment (2023–2025).
Copper at home taps
0.04 ppm (Low)
Low. Water that sits in household pipes overnight can carry more than this.
From California Water Board lab results (2025).
Water chemistry
General hardness
100–280 ppm
Typical 125 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)
73–100 ppm
Typical 80 ppm
Moderate buffering. pH should stay fairly steady.
From California Water Board lab results, measured before treatment (2024–2025).
pH
6.3–7.6
Typical 7.5
Most community fish do well here. Stable water matters more than the exact number.
From California Water Board lab results, measured before treatment (2024).
Total dissolved solids
340–520 ppm
Typical 395 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).
Who supplies Madera Ranchos, CA
Madera Co MD10A-Madera Ranchos
Serves all 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.