Crestline, CA tap water
Supplied mostly by Clawa, plus 3 other utilities. Here's what the 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
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 (2023–2026).
Nitrate (NO₃)
Up to 28 ppm (Low)
Typically not detected
Not detected in testing, so water changes lower your tank's nitrate well.
From California Water Board lab results (2023–2026).
Copper at home taps
Up to 0.21 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 (2023–2026).
Water chemistry
General hardness
58–130 ppm
Typical 88 ppm
Moderately soft to medium. Suits most community fish and plants.
From California Water Board lab results (2023–2026).
Carbonate hardness (alkalinity)
43–130 ppm
Typical 78 ppm
Moderate buffering. pH should stay fairly steady.
From California Water Board lab results (2023–2026).
pH
6.3–8.3
Typical 8.2
Alkaline. Many utilities raise pH to protect pipes. Stability matters more than the exact number.
From California Water Board lab results (2023–2026).
Total dissolved solids
120–250 ppm
Typical 250 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 (2023–2026).
- Crestline Village CWD - Division 10 adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Crestline, CA
Clawa
Serves 62% of residents · Lake or river water · Chlorine
Crestline Village CWD - Division 10
Serves 39% of residents · Buys water from Clawa · Chlorine
Valley of Enchantment Mwc
Serves 9% of residents · Buys water from Clawa · Chlorine
Cedarpines Park Mwc
Serves 6% of residents · Buys water from Clawa · 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.