Aquatell

Montana

The 9 hardness figures we’ve verified run from 1.0 to 12 grains per gallon, with a median of 6.0; 44% are hard or very hard.

How the 9 figures spread across the bands

  • Soft 0
  • Slightly hard 3
  • Moderately hard 2
  • Hard 3
  • Very hard 1
Hardness
6.0 gpg medianAverage 6.1 gpg (104 ppm), from 1.0 to 12. Each published figure counts once in the average, median and spread; a figure published as a range is shown as its range and isn't averaged.
Coverage
9 places9 listings as published
Disinfectant
1 of 5use chloramine; 4 use chlorine

Every place we have

Sources are each city’s water quality report or its utility. Gather the listings up by place or by the water system that serves them, or see every listing as published; open a group to see what’s in it.

9 places

On the scaleDisinfectantSourcesAsk Aqua
Kalispell
No source linked
  • The page it came from links no primary source for this figure.
 12 gpg205 ppm, very hard –
Missoula
No source linked
  • The page it came from links no primary source for this figure.
 10 gpg175 ppm, hard Chlorine Disinfectant
Great Falls
No source linked
  • The page it came from links no primary source for this figure.
 8.6 gpg147 ppm, hard Chloramine Disinfectant
Billings
No source linked
  • The page it came from links no primary source for this figure.
 7.3 gpg124 ppm, hard Chlorine Disinfectant
Glendive
No source linked
  • The page it came from links no primary source for this figure.
 6.0 gpg110 ppm, moderately hard –
Cut Bank
No source linked
  • The page it came from links no primary source for this figure.
 4.0 gpg72 ppm, moderately hard –
Bozeman
No source linked
  • The page it came from links no primary source for this figure.
 3.0 gpg57 ppm, slightly hard Chlorine Disinfectant
Butte
No source linked
  • The page it came from links no primary source for this figure.
 3.0 gpg54 ppm, slightly hard –
Helena
No source linked
  • The page it came from links no primary source for this figure.
 1.0 gpg25 ppm, slightly hard Chlorine Disinfectant

Missing your city? Aquatell researches cities on request from the utility’s own reports, usually within a week. A note on a figure says what we found when we checked it: units that didn’t agree, another page with a different figure, a range.

What to do about it

Hard water

Above about 3.5 grains per gallon, scale builds in water heaters, fixtures and appliances. A softener sized for your hardness and household removes it for the whole house.

Water softenersSizing a softener

Chlorine or chloramine

Standard carbon removes chlorine’s taste and smell. Chloramine lasts longer in the pipes and needs catalytic carbon to remove it.

Carbon and chloramine filters

Not sure what you need?

Aqua knows these figures and Aquatell’s treatment charts, and can size a system for your home.

Softeners for Montana’s water

See them all