North Carolina water quality
North Carolina has 4,894 active public water systems (23,682 on file total), 1,958 of them graded by TapGraded.
Grade distribution
Biggest water systems
CHARLOTTE WATER
CHARLOTTE, NC · 1,163,701 served
RALEIGH, CITY OF
RALEIGH, NC · 650,000 served
WINSTON-SALEM, CITY OF
PFAFFTOWN, NC · 391,900 served
DURHAM, CITY OF
DURHAM, NC · 333,490 served
GREENSBORO, CITY OF
GREENSBORO, NC · 319,588 served
CARY, TOWN OF
CARY, NC · 227,300 served
FAYETTEVILLE PUBLIC WORKS COMM
FAYETTEVILLE, NC · 226,441 served
CFPUA-WILMINGTON
WILMINGTON, NC · 212,227 served
UNION COUNTY WATER SYSTEM
MONROE, NC · 169,685 served
ASHEVILLE CITY OF
ASHEVILLE, NC · 157,431 served
Lowest-graded systems
Active, graded systems serving at least 10,000 people, ordered by lowest Tap Grade first.
MONTGOMERY COUNTY WATER SYSTEM
MT GILEAD, NC · 15,362 served
HAMLET WATER SYSTEM
HAMLET, NC · 10,635 served
EDGECOMBE WATER & SEWER DISTRICT
TARBORO, NC · 14,485 served
PENDER COUNTY UTILITIES
BURGAW, NC · 32,302 served
DAN RIVER WATER INC
EDEN, NC · 12,573 served
CHEROKEE WATER SYSTEM
CHEROKEE, NC · 16,203 served
REIDSVILLE, CITY OF
REIDSVILLE, NC · 14,585 served
ROCKINGHAM, CITY OF
ROCKINGHAM, NC · 12,510 served
WAYNE WATER DISTRICTS PURCHASE
GOLDSBORO, NC · 16,302 served
HENDERSON-KERR LAKE REG WTR
HENDERSON, NC · 14,937 served
Cities in North Carolina
Source: EPA SDWIS/ECHO · Data as of 2026Q2