WaterQ

City Water Quality Rankings in Montana

83 cities ranked by drinking water quality.

All States AL AK AZ AR CA CO CT DE FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY

Popular city water quality comparisons

Big Timber, MT vs Bigfork, MT Compare → Black Eagle, MT vs Fort Benton, MT Compare → Fort Harrison, MT vs Glasgow, MT Compare → Lakeside, MT vs Plentywood, MT Compare →

Trending Cities

Fairbanks, AK Fresno, CA San Jose, CA Sacramento, CA San Francisco, CA Houston, TX Fargo, ND
#25
Columbus
County, MT
96 A
#26
Dillon
County, MT
96 A
#27
Florence
County, MT
96 A
#28
Kalispell
County, MT
96 A
#29
Livingston
County, MT
96 A
#30
Malta
County, MT
96 A
#31
Sidney
County, MT
96 A
#32
Stevensville
County, MT
96 A
#33
Superior
County, MT
96 A
#34
Columbia Falls
County, MT
94 A
#35
Manhattan
County, MT
94 A
#36
Missoula
County, MT
94 A
#37
Seeley Lake
County, MT
94 A
#38
Thompson Falls
County, MT
94 A
#39
Three Forks
County, MT
94 A
#40
Great Falls
County, MT
93 A
#41
Lolo
County, MT
93 A
#42
Polson
County, MT
93 A
#43
Baker
County, MT
92 A
#44
Belgrade
County, MT
92 A
#45
Browning
County, MT
92 A
#46
Fairview
County, MT
92 A
#47
Poplar
County, MT
92 A
#48
Scobey
County, MT
92 A

Frequently Asked Questions

How are city water quality rankings calculated in Montana?

WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.

Can I compare two cities in Montana?

Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.

How often does WaterQ refresh city data?

City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.

Explore More Water Quality Data

State Rankings National Rankings Compare Cities All Water Systems