Santa Fe Springs, CA tap water
Supplied mostly by Santa Fe Springs - City, Water Dept., plus 1 other utility. Here's what the water means for your fish.
Disinfectant
Chlorine or chloramine
Utilities here use chlorine or chloramine, depending on which one serves your address. Chlorine slowly gases off from standing water; chloramine doesn't.
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 (2025).
Nitrate (NO₃)
Supplier's figureUp to 32 ppm (Low)
Typical 6.5 ppm
Water changes can't take your tank's nitrate below this level.
From the utility that supplies yours: Metropolitan Water Dist. of So. Cal. and Whittier-City, Water Dept., which supplies Santa Fe Springs - City, Water Dept.; California Water Board lab results (2012–2026).
Copper at home taps
Up to 0.13 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 (2023–2025).
Water chemistry
General hardness
Supplier's figure82–291 ppm
Typical 234 ppm
Hard. Ideal for livebearers and African cichlids. Soft-water species may struggle to breed.
From the utility that supplies yours: Metropolitan Water Dist. of So. Cal. and Whittier-City, Water Dept., which supplies Santa Fe Springs - City, Water Dept.; California Water Board lab results (2023–2026).
Carbonate hardness (alkalinity)
Supplier's figure68–220 ppm
Typical 133 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From the utility that supplies yours: Metropolitan Water Dist. of So. Cal. and Whittier-City, Water Dept., which supplies Santa Fe Springs - City, Water Dept.; California Water Board lab results (2023–2026).
pH
7–7.8
Typical 7.8
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data; California Water Board lab results (2015–2026).
Total dissolved solids
Supplier's figure214–666 ppm
Typical 495 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 yours: Metropolitan Water Dist. of So. Cal. and Whittier-City, Water Dept., which supplies Santa Fe Springs - City, Water Dept.; California Water Board lab results (2023–2026).
Who supplies Santa Fe Springs, CA
Santa Fe Springs - City, Water Dept.
Serves 83% of residents · Buys water from Metropolitan Water Dist. of So. Cal. · Chloramine
San Gabriel Valley Water Co.-El Monte
Serves 16% of residents · Groundwater (wells) · 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.