Tapcensus

Idaho

Franklin County drinking water quality

22 active public water systems serve 11,044 people in Franklin County. 5 are compliant, 17 had at least one EPA violation in the past three years, 4 are designated serious violators, and 3 carry a health flag.

Active systems 22 15 community systems
People served 11K by public water systems
Systems with violations 17 77% of active systems, past 3 years
Serious violators 4 3 systems carry a health flag

Needs attention

Preston City of ID6210014 · Community water system · Serves 5,591 5 rules violated in the past three years. Unresolved: Lead and Copper Rule.
Banida Water and Sewer Dist ID6210001 · Community water system · Serves 180 8 rules violated in the past three years. Unresolved: Revised Total Coliform Rule, Ground Water Rule, and Public Notice Rule and Revised PN Rule.
Preston Eastside Water CO ID6210012 · Community water system · Serves 120 10 rules violated in the past three years. Unresolved: Lead and Copper Rule, Lead and Copper Rule Revisions, and Public Notice Rule and Revised PN Rule.
Winder Water System ID6210021 · Community water system · Serves 20 1 rule violated in the past three years. Unresolved: Ground Water Rule.
Deer Cliff Inn ID6210005 · Transient non-community system · Serves 25 1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule.

Community water systems

15 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Preston City of
 5,591 5 1
Fairview Water Dist
 1,300 3 1
Franklin City of
 1,000 2 0
Dayton City of
Dayton 		510 0 0
Weston City of
 490 0 0
Clifton City of
 413 5 2
Whitney Nashville Water Works
 403 1 0
Banida Water and Sewer Dist
 180 8 3
Cub River Acres
 180 4 1
Birch Creek Culinary
 120 2 1
Preston Eastside Water CO
 120 10 3
Oakdell Farms LLC
 75 1 1
Strawberry Mink Creek Water Assn
 75 5 1
Midway Water System INC
 50 2 1
Winder Water System
 20 1 1
Non-community systems (7: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Lds Camp Hull Valley
 200 1 1
Lds Riverdale Church
Franklin 		150 3 1
Usfs Willow Flat Campground
 66 0 0
Bear River Hot Springs/riverdale Resort
 26 3 1
Deer Cliff Inn
 25 1 1
Usfs Albert Moser Campground
 25 0 0
Usfs Cub River Admin Site
 25 0 0
Inactive systems (10, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Idaho records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.