Tapcensus

Idaho

Madison County drinking water quality

33 active public water systems serve 50,546 people in Madison County. 12 are compliant, 21 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 1 carries a health flag.

Active systems 33 7 community systems
People served 51K by public water systems
Systems with violations 21 64% of active systems, past 3 years
Serious violators 1 1 systems carry a health flag

Needs attention

Meadow Lark Court LLC ID7330014 · Community water system · Serves 45 7 rules violated in the past three years. Unresolved: 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene, 1,2,4-Trichlorobenzene, 1,2-Dichloroethane, 1,2-Dichloropropane, Benzene, Carbon Tetrachloride, Chlorobenzene, Dichloromethane (Methylene Chloride), E. coli (Escherichia coli), Ethylbenzene, Lead and Copper Rule (LCR), Lead and Copper Rule Revisions (LCRR), Styrene, Tetrachloroethylene (PCE), Toluene, Trichloroethylene (TCE), Vinyl Chloride, Xylenes, Total, cis-1,2-Dichloroethylene, o-Dichlorobenzene, p-Dichlorobenzene, and trans-1,2-Dichloroethylene.
South Fork Elementary School ID7330071 · Non-Transient non-community system · Serves 359 2 rules violated in the past three years. Unresolved: Groundwater Rule (GWR) and Public Notification Rule.

Community water systems

7 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Rexburg City of
 40,695 1 0
Sugar City City of
 2,395 1 0
Cedar Butte Subdivision
 300 2 1
Liberty Estates
 300 1 0
Hillview Subd
Rexburg 		50 1 1
Meadow Lark Court LLC
 45 7 3
Syringa Park Subd
Rexburg 		35 1 1
Non-community systems (26: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Lds Church Henrys Fork
Hibbard 		747 0 0
Lds South Rexburg Stake Center
 737 0 0
Lds Church Salem
 581 1 0
Yellowstone Bear World
 500 0 0
Lds Church Plano
 479 1 0
Lds Church Hibbard
 472 0 0
Lds Lyman Mtghs
 471 0 0
Lds Burton Mtghs
 451 0 0
Lds Archer Mtghs
 450 0 0
South Fork Elementary School
 359 2 2
Hibbard Elementary
 300 1 1
The Occasions Group
 202 0 0
Dickinson Frozen Foods
Sugar City 		190 1 0
Basic American Foods Rexburg
 150 1 1
Byu-Idaho Livestock Center
 100 0 0
Green Canyon Hot Springs
 100 2 2
Sun Glo of Idaho North
 92 1 1
Ups Rexburg (idrex)
 80 0 0
Big Juds Well
 50 1 0
Mother Hibbards
 50 1 0
Mountain West Products
Rexburg 		30 1 1
Sugar RV Park
 30 2 1
Wakeside Lake RV Park
 30 1 0
Rexburg Fixxology
 25 0 0
Snake River Hideout
 25 0 0
Taqueria EL Rancho
 25 1 1
Inactive systems (46, 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.