Turlock, CA tap water
Supplied by City of Turlock. 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)
28 ppm (High)
High for tap water. Water changes can't take your tank's nitrate below this level.
From California Water Board lab results (2025).
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 (2023–2025).
Water chemistry
General hardness
Supplier's figure56 ppm
Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.
From the utility that supplies yours: Stanislaus Regional Water Authority, which supplies City of Turlock (2024).
Carbonate hardness (alkalinity)
51–112 ppm
Typical 85 ppm
Moderate buffering. pH should stay fairly steady.
From California Water Board lab results (2023–2026).
pH
7.7–8.4
Typical 8.1
Alkaline. Many utilities raise pH to protect pipes. Stability matters more than the exact number.
From California Water Board lab results (2024–2026).
Total dissolved solids
233 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 (2024–2026).
Who supplies Turlock, CA
City of Turlock
Serves 85% of residents · Buys water from Stanislaus Regional Water Authority · 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.