Helena Valley Southeast, MT tap water
Supplied mostly by Eastgate Village Sewer and Water, plus 3 other utilities. Here's what the water means for your fish.
Disinfectant
Not confirmed
We couldn't confirm how your water is disinfected. US utilities use chlorine or chloramine, and chloramine doesn't gas off when water sits out.
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)
23–130 ppm
Typical 25 ppm
Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.
From EPA monitoring data (2012–2019).
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).
- Helena Water System adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Helena Valley Southeast, MT
Eastgate Village Sewer and Water
Serves 20% of residents · Groundwater (wells) · Disinfectant not listed
Helena Water System
Serves 14% of residents · Lake or river water · Chlorine
Helena Leisure LLC
Serves 11% of residents · Groundwater (wells) · Disinfectant not listed
Homestead Valley Wua Hvha
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.
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.