Lompoc, CA tap water
Supplied by Lompoc-City Water Utility Div. 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
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)
Not detected (Low)
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
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 (2025).
Water chemistry
General hardness
293–405 ppm
Typical 349 ppm
Hard. Ideal for livebearers and African cichlids. Soft-water species may struggle to breed.
From California Water Board lab results (2023–2026).
Carbonate hardness (alkalinity)
40–355 ppm
Typical 198 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From California Water Board lab results (2023–2026).
pH
7.5–8.4
Typical 7.9
Most community fish do well here. Stable water matters more than the exact number.
From California Water Board lab results (2023–2026).
Total dissolved solids
545–810 ppm
Typical 678 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).
- Lompoc-City Water Utility Div softens its water at the plant, so it may be softer than the local groundwater.
Who supplies Lompoc, CA
Lompoc-City Water Utility Div
Serves 92% of residents · Lake or river water · 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.