Helena Valley Northwest, MT tap water
About 46% of Helena Valley Northwest is inside a utility's service area. Homes outside it likely use private wells, which no utility tests.
Disinfectant
Chlorine
Utility water here is treated with chlorine. It slowly gases off from standing water, and any water conditioner removes it. Private wells aren't treated by a utility, so there's no chlorine or chloramine unless a treatment system adds it.
Safety for fish and shrimp
Nitrate (NO₃)
Area estimate0.4–43 ppm (Low)
Typical 2.6 ppm
Low, so water changes lower your tank's nitrate well.
Area estimate from nearby wells: USGS well samples in your county (2001–2010).
Water chemistry
General hardness
Area estimate33–472 ppm
Typical 159 ppm
Moderately hard. Great for livebearers, and most community fish adapt.
Area estimate from nearby wells: USGS well samples in your county (2001–2017).
Carbonate hardness (alkalinity)
Area estimate11–255 ppm
Typical 150 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
Area estimate from nearby wells: USGS well samples in your county (2001–2017).
pH
Area estimate5.2–7.7
Typical 7.2
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 (2001–2017).
Total dissolved solids
Area estimate11–449 ppm
Typical 139 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 (2001–2017).
Who supplies Helena Valley Northwest, MT
North Star PUD
Serves 20% of residents · Groundwater (wells) · Chlorine
Town View Estates Wua Inc
Serves 8% of residents · Groundwater (wells) · Disinfectant not listed
Bridge Creek Estates Subdivision
Serves 6% of residents · Groundwater (wells) · Disinfectant not listed
Grand Valley Estates Subdivision
Serves 6% of residents · Groundwater (wells) · Disinfectant not listed
Ranchview Estates Wua
Serves 6% of residents · Groundwater (wells) · Disinfectant not listed
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.