Livermore, CA tap water
Part of Livermore is supplied by City of Livermore, plus 2 other utilities. Here's what its water means for your fish.
Disinfectant
Chloramine
Utility water here is treated with chloramine. Unlike chlorine, it doesn't gas off when water sits out, and many pitcher and fridge filters aren't rated to remove it. Conditioners that list chloramine on the label break it apart, which frees a little ammonia. Some utilities switch to plain chlorine for a few weeks a year.
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)
Supplier's figureUp to 32 ppm (Low)
Typical 2.5 ppm
Low, so water changes lower your tank's nitrate well.
From the utility that supplies it: Zone 7 Water Agency, which supplies City of Livermore; California Water Board lab results (2023–2026).
Copper at home taps
Up to 0.05 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
Supplier's figure79–368 ppm
Typical 146 ppm
Moderately hard. Great for livebearers, and most community fish adapt.
From the utility that supplies it: Zone 7 Water Agency, which supplies City of Livermore; California Water Board lab results; Zone 7 Water Agency, which supplies California Water Service - Livermore (2023–2026).
Carbonate hardness (alkalinity)
Supplier's figure80–274 ppm
Typical 138 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From the utility that supplies it: Zone 7 Water Agency, which supplies City of Livermore; California Water Board lab results; Zone 7 Water Agency, which supplies California Water Service - Livermore (2023–2026).
pH
Supplier's figure7.4–8.8
Typical 8
Alkaline. Many utilities raise pH to protect pipes. Stability matters more than the exact number.
From the utility that supplies it: Zone 7 Water Agency, which supplies City of Livermore; California Water Board lab results; EPA monitoring data (2012–2026).
Total dissolved solids
Supplier's figure210–568 ppm
Typical 239 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 the utility that supplies it: Zone 7 Water Agency, which supplies City of Livermore; California Water Board lab results; Zone 7 Water Agency, which supplies California Water Service - Livermore (2023–2026).
- City of Livermore, Zone 7 Water Agency and California Water Service - Livermore soften their water at the plant, so it may be softer than the local groundwater.
Who supplies Livermore, CA
City of Livermore
Serves 45% of residents · Buys water from Zone 7 Water Agency · Chloramine
Zone 7 Water Agency
Serves 40% of residents · Lake or river water · Chloramine
California Water Service - Livermore
Serves 22% of residents · Buys water from Zone 7 Water Agency · Chloramine
We couldn't fully map which utility serves Livermore. These numbers come from the utilities we matched, which serve about 45% of residents.
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.