WaterQ

City Water Quality Rankings in South Dakota

87 cities ranked by drinking water quality.

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Popular city water quality comparisons

Aurora, SD vs Batesland, SD Compare → Chamberlain, SD vs Dakota Dunes, SD Compare → De Smet, SD vs Keystone, SD Compare → Lead, SD vs Madison, SD Compare →

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#25
Wakonda
County, SD
98 A
#26
Arlington
County, SD
96 A
#27
Belle Fourche
County, SD
96 A
#28
Beresford
County, SD
96 A
#29
Custer
County, SD
96 A
#30
Elk Point
County, SD
96 A
#31
Ellsworth Afb
County, SD
96 A
#32
Freeman
County, SD
96 A
#33
Gettysburg
County, SD
96 A
#34
Huron
County, SD
96 A
#35
Miller
County, SD
96 A
#36
Newell
County, SD
96 A
#37
North Sioux City
County, SD
96 A
#38
Redfield
County, SD
96 A
#39
Sturgis
County, SD
96 A
#40
Volga
County, SD
96 A
#41
Webster
County, SD
96 A
#42
Clark
County, SD
95 A
#43
Milbank
County, SD
95 A
#44
Pine Ridge
County, SD
95 A
#45
Rapid City
County, SD
95 A
#46
Brandon
County, SD
94 A
#47
Dell Rapids
County, SD
94 A
#48
Fort Pierre
County, SD
94 A

Frequently Asked Questions

How are city water quality rankings calculated in South Dakota?

WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.

Can I compare two cities in South Dakota?

Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.

How often does WaterQ refresh city data?

City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.

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