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.
WaterCheckup Safety Score — an independent index from EPA public data and our formula. Not your utility’s official water quality rating, an EPA compliance grade, or a test of water at your tap. How we score →
#1
Baton Rouge, LAGrade A
Multiple Contaminants Flagged · 230K residents
85/88
#2
Dayton, OHGrade A
PFAS Concern · 135K residents
85/88
#3
Henderson, NVGrade A-
Very Hard Water · 320K residents
83/88
#4
Aurora, COGrade A-
PFAS Concern · 370K residents
82/88
#5
Buffalo, NYGrade A-
Lead Pipe Risk · 260K residents
82/88
#6
Cape Coral, FLGrade A-
PFAS Concern · 190K residents
82/88
#7
Colorado Springs, COGrade A-
PFAS Concern · 480K residents
82/88
#8
Honolulu, HIGrade A-
PFAS Detected · 350K residents
82/88
#9
Lincoln, NEGrade A-
Nitrates Flagged · 290K residents
82/88
#10
Orlando, FLGrade A-
PFAS Concern · 310K residents
82/88