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WATER SAFETY SCORE · 0–88
10 best cities for tap water quality
Among WaterCheckup's tracked city guides, these metros score highest on our exposure profile (88 = best possible — no municipal supply is perfect). "Best" here means fewer UCMR5 MCL flags and lighter contaminant profiles in our database — not a guarantee for every home. Older plumbing can still add lead at the tap. Compare with the worst cities list.
#1
Baton Rouge, LAGrade A
Multiple Contaminants Flagged · 230K residents
85/88
#2
Dayton, OHGrade A
PFAS Concern · 135K residents
85/88
#3
Fort Collins, COGrade A
Contaminants Above Guidelines · 165K residents
85/88
#4
Little Rock, ARGrade A
Disinfection Byproducts · 200K residents
85/88
#5
Montgomery, ALGrade A
Disinfection Byproducts · 200K residents
85/88
#6
Nashville, TNGrade A
Disinfection Byproducts · 700K residents
85/88
#7
Portland, MEGrade A
PFAS Concern · 68K residents
85/88
#8
Richmond, VAGrade A
Contaminants Above Guidelines · 230K residents
85/88
#9
Henderson, NVGrade A-
Very Hard Water · 320K residents
83/88
#10
Aurora, COGrade A-
PFAS Concern · 370K residents
82/88