💧 ZIP Water Report

Tap water in Bison, SD — ZIP 57620

3 public water systems serving about 9,317 people.

A
Excellent

Water systems serving 57620

Southwest Water Authority
PWSID ND4501434 · serves 8,537 · surface water
0 health-based / 1 total violations (5 yrs)
A
Perkins County Rural Water
PWSID SD4602228 · serves 470 · surface water
0 health-based / 2 total violations (5 yrs)
A
Bison
PWSID SD4600039 · serves 310 · surface water
0 health-based / 1 total violations (5 yrs)
A

Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology