City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2137
Saginaw
County, MI
97 A
#2138 Saipan
County, MP
97 A
#2139 Salem
County, OH
97 A
#2140 San Luis Obispo
County, CA
97 A
#2141 Sandstone
County, MN
97 A
#2142 Sandy Springs
County, SC
97 A
#2143 Saratoga
County, WY
97 A
#2144 Satsuma
County, AL
97 A
#2145 Schofield
County, WI
97 A
#2146 Sealy
County, TX
97 A
#2147 Selah
County, WA
97 A
#2148 Sellersburg
County, IN
97 A
#2149 Seneca
County, PA
97 A
#2150 Shelby
County, MT
97 A
#2151 Silverdale
County, WA
97 A
#2152 Sonoma
County, CA
97 A
#2153 South Hutchinson
County, KS
97 A
#2154 Southgate
County, MI
97 A
#2155 Spearman
County, TX
97 A
#2156 Spinnerstown
County, PA
97 A
#2157 St Johnsbury
County, VT
97 A
#2158 Stanley
County, WI
97 A
#2159 Sublette
County, IL
97 A
#2160 Sumter
County, SC
97 A
Frequently Asked Questions
How are city water quality rankings calculated?
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 US cities directly?
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.