Tapcensus

South Dakota

Edmunds County drinking water quality

7 active public water systems serve 23,476 people in Edmunds County. 2 are compliant, 5 had at least one EPA violation in the past three years, 0 are designated serious violators, and 2 carry a health flag.

Active systems 7 7 community systems
People served 23K by public water systems
Systems with violations 5 71% of active systems, past 3 years
Serious violators 0 2 systems carry a health flag

Needs attention

Hosmer SD4600162 · Hosmer · Community water system · Serves 170 3 rules violated in the past three years. Unresolved: Stage 1 Disinfectants and Disinfection Byproducts Rule.
Boulder Colony SD4600339 · Hosmer · Community water system · Serves 26 1 rule violated in the past three years. Unresolved: Stage 1 Disinfectants and Disinfection Byproducts Rule.

Community water systems

7 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Web Water Development Association
Aberdeen
20,750 0 0
Ipswich
Ipswich
928 1 0
Mina Lake Sanitary District
Aberdeen, Mina
863 0 0
Bowdle
Bowdle
470 2 0
Roscoe
Roscoe
269 2 0
Hosmer
Hosmer
170 3 1
Boulder Colony
Hosmer
26 1 1
Inactive systems (7, 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 South Dakota 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.