Brunswick County Water Quality
Brunswick County, North Carolina: one city report built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.
Highest result for each contaminant
One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.
Perfluorooctanesulfonic acid (PFOS)OAK ISLAND, TOWN OF4.0 ng/L federal MCL (2024) · US EPA12 ng/L
- OAK ISLAND, TOWN OF12 ng/LSample date: 2023-10-09 to 2025-01-07
Perfluorooctanoic acid (PFOA)OAK ISLAND, TOWN OF4.0 ng/L federal MCL (2024) · US EPA7 ng/L
- OAK ISLAND, TOWN OF7 ng/LSample date: 2023-10-09 to 2025-01-07
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)OAK ISLAND, TOWN OF10 ng/L federal MCL (2024) · US EPA5.2 ng/L
- OAK ISLAND, TOWN OF5.2 ng/LSample date: 2023-10-09 to 2025-01-07
Perfluorohexanesulfonic acid (PFHxS)OAK ISLAND, TOWN OF10 ng/L federal MCL (2024) · US EPA5.1 ng/L
- OAK ISLAND, TOWN OF5.1 ng/LSample date: 2023-10-09 to 2025-01-07
Perfluorobutanesulfonic acid (PFBS)OAK ISLAND, TOWN OF2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPA6 ng/L
- OAK ISLAND, TOWN OF6 ng/LSample date: 2023-10-09 to 2025-01-07
Perfluorohexanoic acid (PFHxA)OAK ISLAND, TOWN OF400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLE9.5 ng/L
- OAK ISLAND, TOWN OF9.5 ng/LSample date: 2023-10-09 to 2025-01-07
Perfluorobutanoic acid (PFBA)OAK ISLAND, TOWN OFNo federal or state limit; shown for transparency6.6 ng/L
- OAK ISLAND, TOWN OF6.6 ng/LSample date: 2023-10-09 to 2025-01-07
Perfluoroheptanoic acid (PFHpA)OAK ISLAND, TOWN OFNo federal or state limit; shown for transparency4.1 ng/L
- OAK ISLAND, TOWN OF4.1 ng/LSample date: 2023-10-09 to 2025-01-07
1 more contaminant detectedShow
Perfluoropentanoic acid (PFPeA)OAK ISLAND, TOWN OFNo federal or state limit; shown for transparency12 ng/L
- OAK ISLAND, TOWN OF12 ng/LSample date: 2023-10-09 to 2025-01-07
22 substances tested, none detected in this systemShow
Tested in this system: OAK ISLAND, TOWN OF
- 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
- 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
- 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
- 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
- 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
- Lead (90th percentile)
- Lithium
- N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
- N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
- Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
- Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
- Perfluoro-3-methoxypropanoic acid (PFMPA)
- Perfluoro-4-methoxybutanoic acid (PFMBA)
- Perfluorodecanoic acid (PFDA)
- Perfluorododecanoic acid (PFDoA)
- Perfluoroheptanesulfonic acid (PFHpS)
- Perfluorononanoic acid (PFNA)
- Perfluoropentanesulfonic acid (PFPeS)
- Perfluorotetradecanoic acid (PFTA)
- Perfluorotridecanoic acid (PFTrDA)
- Perfluoroundecanoic acid (PFUnA)
Cities ranked by the records
Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.
0of 1 city above the 15 µg/L action level
Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.
Lead in North CarolinaLargest water systems
- Oak IslandOAK ISLAND, TOWN OF · NC041002026,924 served
Frequently asked
How does Brunswick County tap water compare across cities?
PurityMap ranks 1 city in Brunswick County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Oak Island's main water system: OAK ISLAND, TOWN OF · PWSID NC0410020 · Purity Score 57 (Fair) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.
How many Brunswick County cities had a PFAS sample above a 2024 EPA limit?
1 of 1 Brunswick County city report had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Oak Island (PFOS 12 ng/L). That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. PFAS were detected at any level in 1.
Is there lead in Brunswick County tap water?
Utilities report lead as a 90th-percentile result from home taps. 0 of 1 Brunswick County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.
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