Is Four Oaks, NC tap water safe?
The short answer
1 of the 2 utilities serving Four Oaks has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Town of Four Oaks.
Johnston Co - West, which serves the most people here, has 2 results above EPA’s new limit, which takes effect in 2029. The worst: PFOS at 14.1 ppt, above EPA’s new limit, which takes effect in 2029.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Four Oaks’s ZIP codes, from EPA’s estimates.
- Open report
Johnston Co - West
North Carolina · serves 99,027 people · under 100 in Four Oaks
2 results above EPA’s new limit, which takes effect in 2029. The worst: PFOS at 14.1 ppt, above EPA’s new limit, which takes effect in 2029.
No health-based violations since 2016
- Open report
Town of Four Oaks
North Carolina · serves 2,302 people · under 100 in Four Oaks
1 result above the legal limit and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 84.6 ppb, above the legal limit.
7 health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Johnston Co - West’s water, which serves the most people here. Another utility’s report names what handles its own results.
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ZeroWater 10 Cup Pitcher (ZP-010)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53checked Oct. 4, 2026
Certified for: PFOS, PFOA
Aquasana Claryum Direct Connect (AQ-MF-1)
Under-sink carbon
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
Certified for: PFOS, PFOA
Express Water StreamLine Direct Connect System (USC001)
Under-sink carbon
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
Certified for: PFOS, PFOA
Water testing near Four Oaks
The 3 labs North Carolina certifies closest to Four Oaks, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Wake County Human Services-Public Health Ctr.
Raleigh, NC · about 26 miles
Certified for bacteria, nitrate, metals, minerals and other inorganics
Eurofins Built Env. Testing East - Cary
Cary, NC · about 34 miles
Certified for asbestos
Eurofins Raleigh
Cary, NC · about 34 miles
Certified for bacteria, nitrate, minerals and other inorganics
ZIP codes in Four Oaks
Which ZIP codes are in Four Oaks: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: North Carolina State Laboratory of Public Health, certified drinking water laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Four Oaks
Other towns in Johnston County with a page of their own.
What to do next
- Read Johnston Co - West’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for PFOSRanked by certification and what they cost over five years.The best water filters for PFAS, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water