Cincinnati, OH water quality
Cincinnati, OH is served by 15 public water systems, serving 822,301 people combined. Across those systems, we count 1 health-based violation in the last 5 years. The worst Tap Grade among them is B.
Water systems serving Cincinnati
CINCINNATI PUBLIC WATER SYSTEM
CINCINNATI, OH · 750,200 served
NORWOOD CITY PWS
NORWOOD, OH · 19,870 served
INDIAN HILL CITY PWS
CINCINNATI, OH · 15,000 served
WYOMING CITY PWS
CINCINNATI, OH · 9,700 served
READING CITY PWS
READING, OH · 9,506 served
CINCINNATI VA MEDICAL CENTER
CINCINNATI, OH · 4,152 served
TRIHEALTH GOOD SAMARITAN HOSPITAL
CINCINNATI, OH · 4,000 served
LOCKLAND VILLAGE PWS
LOCKLAND, OH · 3,486 served
GLENDALE VILLAGE PWS
GLENDALE, OH · 2,500 served
CINCINNATI CHILDRENS HOSP IONIZATION SYS
CINCINNATI, OH · 1,514 served
CINCINNATI CHILDRENS MED CENTER COL HILL
CINCINNATI, OH · 722 served
FOUR SEASONS MARINA
CINCINNATI, OH · 615 served
UC HEALTH MEDICAL CENTER SCIS
CINCINNATI, OH · 558 served
THE ROOT BEER STAND
SHARONVILLE, OH · 270 served
UC HEALTH RIDGEWAY TOWER
CINCINNATI, OH · 208 served
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Is Cincinnati, OH tap water safe to drink?
15 public water systems serve Cincinnati, OH, with 1 health-based violation in the last 5 years across them. The worst Tap Grade among them is B.
Does Cincinnati's water have lead in it?
The most recent 90th-percentile lead sample is 2.1 ppb, versus the EPA action level of 15 ppb.
Has PFAS been detected in Cincinnati's water?
Yes — at least one water system serving Cincinnati has detected PFAS under UCMR5.
Source: EPA SDWIS/ECHO · Data as of 2026Q2