Community Water System · PWS NC0410020
Oak Island, Town Of
Operator location Oak Island, North Carolina - UCMR5 detected 9 PFAS compounds (upper-third PFAS panel (> 4 compounds)) on this PWS; SDWIS lists 98 violations and 26,924 people served.
- 26,924
- People served (this PWS)
- 98
- EPA violations (this PWS)
- 3
- Health-based (this PWS)
- 9 PFAS
- UCMR5 (this PWS)
Oak Island, Town Of standing, high SDWIS violation third
UCMR5 detected 9 PFAS compounds - upper-third PFAS panel (> 4 compounds). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 3% is middle-third health share (≤ 23%). UCMR5: upper-third PFAS panel (> 4 compounds). Population rank #2,066 of 29,740 among systems serving 500+.
The verdict
Oak Island, Town Of sits in the upper third of the sitemap cohort by violation count (98), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (26,924; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 3% (middle-third health share (≤ 23%)). UCMR5 detected 9 PFAS compounds (upper-third PFAS panel (> 4 compounds)).
- #2,066 of 29,740
- Population · /systems
- #57 of 713
- Population · NC
- 98
- Total EPA violations on record
- 3%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
9 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 10,600
- County
- Brunswick
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 69
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 26 | 2018 |
| TTHM | MR | 23 | 2018 |
| Consumer Confidence Rule | Other | 18 | 2018 |
| Public Notice | Other | 8 | 2019 |
| Lead and Copper Rule | MR | 7 | 2015 |
| Nitrite | MR | 6 | 1999 |
| Nitrate | MR | 4 | 1997 |
| Coliform (TCR) | MR | 3 | 2003 |
| Coliform (TCR) | MCL | 3 | 2006 |
Violation Count vs. the National Corpus
Oak Island, Town Of has 98 recorded EPA violations, 73% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 27% carry more. 3% of this system's own violations are health-based (3 of 98), and it ranks #2,066 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
98 Around the middle fewer violations than 27% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 16 of 116 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| NMeFOSAA | 7/22/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 7/22/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTA | 7/22/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFOS | 7/22/2024 | 11.00 ppt | 4.00 ppt | Detected |
| PFTrDA | 7/22/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFNA | 7/22/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 7/22/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 7/22/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 7/22/2024 | 5.20 ppt | 3.00 ppt | Detected |
| PFHxS | 7/22/2024 | 4.30 ppt | 3.00 ppt | Detected |
| PFOA | 7/22/2024 | 6.80 ppt | 4.00 ppt | Detected |
| PFDoA | 7/22/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 7/22/2024 | 7.90 ppt | 3.00 ppt | Detected |
| PFUnA | 7/22/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 7/22/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 7/22/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 7/22/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 7/22/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 7/22/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 7/22/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 7/22/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 7/22/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 7/22/2024 | 8.00 ppt | 3.00 ppt | Detected |
| PFPeS | 7/22/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 7/22/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFMBA | 7/22/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 7/22/2024 | 3.60 ppt | 3.00 ppt | Detected |
| PFEESA | 7/22/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 7/22/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTA | 4/29/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 4/29/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| NMeFOSAA | 4/29/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 4/29/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpS | 10/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 10/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 10/9/2023 | 12.00 ppt | 3.00 ppt | Detected |
| PFBS | 10/9/2023 | 6.00 ppt | 3.00 ppt | Detected |
| PFMPA | 10/9/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 10/9/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 10/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 10/9/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 10/9/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 10/9/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 10/9/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFTA | 10/9/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| ADONA | 10/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 10/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 10/9/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFEESA | 10/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 10/9/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
UCMR5 PFAS record for Oak Island, Town Of
Open EPA SDWIS federal reports for PWS NC0410020 to cross-check UCMR5 detections and violation codes; state primacy agencies enforce the Safe Drinking Water Act locally.
Sources: EPA SDWIS · North Carolina DEQ, Public Water Supply Section
Nationwide peers
98 violations · 26,924 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Oak Island, Town Of
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in North Carolina compares on the same EPA violation measures. North Carolina systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.