Eastern Goleta Valley, CA tap water
Supplied mostly by Goleta Water District, plus 1 other utility. 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 1.1 ppm (Low)
Typically not detected
Not detected in testing, so water changes lower your tank's nitrate well.
From California Water Board lab results; Central Coast Water Authority, which supplies La Cumbre Mutual Water Co (2023–2026).
Copper at home taps
0.07–0.18 ppm (Low)
Typical 0.07 ppm
Low. Water that sits in household pipes overnight can carry more than this.
From California Water Board lab results (2023–2026).
Water chemistry
General hardness
87–871 ppm
Typical 450 ppm
Hard. Ideal for livebearers and African cichlids. Soft-water species may struggle to breed.
From California Water Board lab results; Central Coast Water Authority, which supplies La Cumbre Mutual Water Co (2023–2026).
Carbonate hardness (alkalinity)
66–170 ppm
Typical 168 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From California Water Board lab results; Central Coast Water Authority, which supplies La Cumbre Mutual Water Co (2023–2026).
pH
7.8–8.1
Typical 8
Most community fish do well here. Stable water matters more than the exact number.
From California Water Board lab results; Central Coast Water Authority, which supplies La Cumbre Mutual Water Co (2023–2026).
Total dissolved solids
260–1650 ppm
Typical 740 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; Central Coast Water Authority, which supplies La Cumbre Mutual Water Co (2023–2026).
Who supplies Eastern Goleta Valley, CA
Goleta Water District
Serves 93% of residents · Lake or river water · Chlorine
La Cumbre Mutual Water Co
Serves 7% of residents · Buys water from Central Coast 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.
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Compiled by Shoal & Stem from public records. Free to cite with a link.