North Carolina Water Quality Ratings

TapWaterSafety has rated 35 public water systems in North Carolina, serving a combined 7,962,393 residents. The statewide average grade is F.

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
State average grade
F
57/100
Total utilities rated 35
Population served 7,962,393
Most recent test 2024

Top water quality concerns in North Carolina

  • Haloacetic acids (HAA9) significantly above health guideline
  • PFAS contamination
  • Total trihalomethanes (TTHMs) significantly above health guideline
  • Haloacetic acids (HAA5) significantly above health guideline
  • Perfluorohexane sulfonate (PFHXS) significantly above health guideline

Grade distribution

A
0 (0%)
B
1 (3%)
C
8 (23%)
D
14 (40%)
F
12 (34%)

All rated utilities in North Carolina

Sorted by score, highest first. Click any utility to see the full grade card.

Rank Utility City Population Score Grade
#1 City of Raleigh Water Department Raleigh 474,000 77 B
#2 Greensboro Municipal Water System Greensboro 297,000 72 C
#3 Durham Water Authority Durham 278,000 68 C
#4 ASHEVILLE CITY OF ASHEVILLE 157,431 67 C
#5 CLEVELAND COUNTY WATER LAWNDALE 59,395 67 C
#6 HENDERSONVILLE, CITY OF HENDERSONVILLE 79,278 67 C
#7 ONSLOW WTR AND SEWER AUTHORITY JACKSONVILLE 156,755 66 C
#8 HICKORY CITY OF HICKORY 75,654 65 C
#9 Charlotte Municipal Water System Charlotte 873,000 65 C
#10 Winston-Salem Department of Public Works Winston-Salem 248,000 64 D
#11 Fayetteville Water Authority Fayetteville 209,000 63 D
#12 TWO RIVERS UTILITIES GASTONIA 93,877 61 D
#13 ROBESON COUNTY WATER SYSTEM MAXTON 67,970 56 D
#14 UNION COUNTY WATER SYSTEM MONROE 167,554 55 D
#15 HIGH POINT, CITY OF HIGH POINT 118,399 55 D
#16 DURHAM, CITY OF DURHAM 322,083 55 D
#17 JOHNSTON CO-WEST WILSON MILLS 92,365 55 D
#18 ORANGE WATER & SEWER AUTHORITY CARRBORO 86,500 55 D
#19 RALEIGH, CITY OF RALEIGH 640,000 55 D
#20 CARY, TOWN OF CARY 224,000 55 D
#21 APEX, TOWN OF APEX 83,001 55 D
#22 CFPUA-WILMINGTON WILMINGTON 198,740 55 D
#23 GREENVILLE UTILITIES COMM GREENVILLE 103,140 55 D
#24 CHARLOTTE WATER CHARLOTTE 1,163,701 53 F
#25 BRUNSWICK COUNTY WATER SYSTEM LELAND 142,227 53 F
#26 OLD NORTH UTILITIES SERVICES/FT BRAGG FAYETTEVILLE 65,000 53 F
#27 CONCORD, CITY OF CONCORD 120,548 51 F
#28 KANNAPOLIS, CITY OF KANNAPOLIS 54,757 51 F
#29 FAYETTEVILLE PUBLIC WORKS COMM FAYETTEVILLE 215,590 51 F
#30 DAVIDSON WATER INC LEXINGTON 153,632 50 F
#31 HARNETT REGIONAL WATER LILLINGTON 116,892 50 F
#32 BURLINGTON, CITY OF BURLINGTON 61,365 48 F
#33 WINSTON-SALEM, CITY OF CLEMMONS 388,060 48 F
#34 GREENSBORO, CITY OF GREENSBORO 319,588 48 F
#35 ROCKY MOUNT, CITY OF ROCKY MOUNT 55,891 48 F