Palmdale, CA tap water
Supplied mostly by Palmdale Water District, plus 2 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 31 ppm (High)
Typical 31 ppm
High for tap water. Water changes can't take your tank's nitrate below this level.
From Palmdale Water District's 2024 water quality report; California Water Board lab results; Antelope Valley East Kern Water Agency, which supplies Los Angeles Cwwd 40 Reg 4 & 34 Lancaster (2023–2025).
Copper at home taps (first draw)
Up to 0.4 ppm (Worth knowing)
The 90th percentile of first-draw samples from homes: water that sat in household pipes for at least six hours.
Shrimp and snails are sensitive to copper. Water that sits in household pipes picks up the most; it drops once the tap has run for a minute.
From Palmdale Water District's 2024 water quality report; California Water Board lab results (2023–2025).
Chlorine or chloramine at the tap
0.4–1.9 ppm
Typical 1.2 ppm
At tap levels, chlorine and chloramine are toxic to fish, shrimp and the bacteria in a filter. Water conditioners are made for this range.
Published by your utility: Palmdale Water District's 2024 water quality report.
Water chemistry
General hardness
29–223 ppm
Typical 101 ppm
Moderately soft to medium. Suits most community fish and plants.
From Palmdale Water District's 2024 water quality report; California Water Board lab results; Antelope Valley East Kern Water Agency, which supplies Los Angeles Cwwd 40 Reg 4 & 34 Lancaster (2023–2025).
Carbonate hardness (alkalinity)
52–180 ppm
Typical 70 ppm
Moderate buffering. pH should stay fairly steady.
From Palmdale Water District's 2024 water quality report; California Water Board lab results; Antelope Valley East Kern Water Agency, which supplies Los Angeles Cwwd 40 Reg 4 & 34 Lancaster (2023–2025).
pH
6.8–8.4
Typical 7.2
Most community fish do well here. Stable water matters more than the exact number.
From Palmdale Water District's 2024 water quality report; California Water Board lab results; Antelope Valley East Kern Water Agency, which supplies Los Angeles Cwwd 40 Reg 4 & 34 Lancaster (2023–2025).
Total dissolved solids
150–470 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 Palmdale Water District's 2024 water quality report; California Water Board lab results; Antelope Valley East Kern Water Agency, which supplies Los Angeles Cwwd 40 Reg 4 & 34 Lancaster (2023–2025).
- Antelope Valley East Kern Water Agency and Los Angeles Cwwd 40 Reg 4 & 34 Lancaster add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Palmdale, CA
- 2024 water quality report
Palmdale Water District
Serves 73% of residents · Lake or river water · Chlorine
Antelope Valley East Kern Water Agency
Serves 18% of residents · Lake or river water · Chlorine
Los Angeles Cwwd 40 Reg 4 & 34 Lancaster
Serves 11% of residents · Buys water from Antelope Valley East Kern Water Agency · 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.