North Carolina
Onslow County drinking water quality
21 active public water systems serve 288,948 people in Onslow County. 8 are compliant, 13 had at least one EPA violation in the past three years, 0 are designated serious violators, and 1 carries a health flag.
Needs attention
Community water systems
17 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Onslow Wtr and Sewer Authority Jacksonville |
156,755 | 3 | 0 | |
|
Jacksonville City of Jacksonville |
49,093 | 1 | 0 | |
|
Usmc Lejeune--Hadnot Point Camp Lejeune |
37,500 | 1 | 1 | |
|
Usmc Lejeune--Holcomb Blvd Camp Lejeune |
17,000 | 0 | 0 | |
|
Usmc Lejeune--New River Air ST Camp Lejeune |
11,500 | 0 | 0 | |
|
Usmc Lejeune--Rifle Range Camp Lejeune |
3,500 | 0 | 0 | |
|
Old Settlers Water System Topsail Beach |
2,677 | 3 | 0 | |
|
Northwest Onslow Water Assoc Richlands |
2,555 | 0 | 0 | |
|
Lauradale S/d Jacksonville |
2,527 | 4 | 1 | |
|
Raintree/summersill Estates #2 Jacksonville |
1,539 | 4 | 0 | |
|
Osprey Cove 1 Jacksonville |
475 | 2 | 0 | |
|
Osprey Cove 2 Jacksonville |
475 | 3 | 1 | |
|
Sherwood MHP Midway Park |
470 | 0 | 0 | |
|
City of Jacksonville Springfield Apts Jacksonville |
385 | 1 | 0 | |
|
Summersill Estates NO 1 Jacksonville |
163 | 4 | 1 | |
|
Southgate MHP Jacksonville |
94 | 4 | 0 | |
|
Chanda`s Ridge Maple Hill |
70 | 1 | 0 |
Non-community systems (4: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Usmc Lejeune-Devil Dog-Verona Loop Camp Lejeune |
800 | 0 | 0 | |
|
White Street Industrial Park Jacksonville |
600 | 1 | 0 | |
|
Hammocks Beach State Park-Bear Island Swansboro |
450 | 0 | 0 | |
|
Usmc Lejeune--Onslow Beach Camp Lejeune |
320 | 0 | 0 |
Inactive systems (257, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The North Carolina records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.