Sierra Vista, AZ tap water
Supplied mostly by Bella Vista City Water System, plus 3 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 EPA monitoring data (2012–2019).
Nitrate (NO₃)
Up to 8.9 ppm (Low)
Typical 2.7 ppm
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Area estimate24–403 ppm
Typical 150 ppm
Moderately hard. Great for livebearers, and most community fish adapt.
Area estimate from nearby wells: USGS well samples in your county (2000–2021).
Carbonate hardness (alkalinity)
Area estimate101–276 ppm
Typical 168 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
Area estimate from nearby wells: USGS well samples in your county (2000–2021).
pH
Area estimate7.2–8.4
Typical 7.7
Most community fish do well here. Stable water matters more than the exact number.
Area estimate from nearby wells: USGS well samples in your county (2000–2021).
Total dissolved solids
Area estimate89–403 ppm
Typical 166 ppm
A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.
Area estimate from nearby wells: USGS well samples in your county (2000–2020).
Who supplies Sierra Vista, AZ
Bella Vista City Water System
Serves 49% of residents · Groundwater (wells) · Chlorine
Pueblo del Sol Water Company
Serves 21% of residents · Groundwater (wells) · Disinfectant not listed
Arizona Water Co - Sierra Vista
Serves 16% of residents · Groundwater (wells) · Chlorine
Us Army Fort Huachuca
Serves 11% 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.
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.