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ZIP Code 59404 Water Quality
Montana · 4,729 people served · 11 water systems
D
PoorZIP code 59404 is in Montana and is a small town from a drinking-water-service perspective, with 4,729 people served by 11 EPA-registered public water systems. It corresponds to GREAT FALLS.
Within ZIP code 59404, the EPA Safe Drinking Water Information System (SDWIS) records 6 health-based violations during the past five years across 11 water systems serving this postal area. The grade of D reflects the aggregate compliance pattern, not the current daily water quality.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
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Cities in ZIP 59404
Water Systems Serving 59404
SPRING TREE RIDGE
PWSID: MT0004419
80 served
BIG BEND RANCH SUBDIVISION
PWSID: MT0004261
100 served
PARK GARDEN ESTATES
PWSID: MT0000050
50 served
SUN PRAIRIE WATER DISTRICT
PWSID: MT0000571
350 served
HOMESTEAD ACRES COUNTY WATER AND SEWER
PWSID: MT0000526
500 served
HIGH PLAINS H2O LLC
PWSID: MT0005192
25 served
SUN PRAIRIE VILLAGE COUNTY
PWSID: MT0000521
1,800 served
PRAIRIE WATER COMPANY
PWSID: MT0003539
1,000 served
GORE HILL COUNTY WATER DIST
PWSID: MT0000232
500 served
WINDY ACRES WUA
PWSID: MT0002806
50 served
GREAT FALLS RV PARK
PWSID: MT0000027
274 served
About ZIP-code water data
Postal-code level water quality data is built up from the underlying water systems — multiple ZIPs may share a single utility, and a single ZIP can span multiple utilities. For property-level information, contact the specific utility serving your address. EPA data on this page was last refreshed on 2026-05-18.
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