CheckPFAS

ZIP Code 28115

High Risk
High Risk PFAS Risk Level

PFAS above EPA limits detected

2 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.

13
PFAS Detected
2
Above EPA Limits
2
Water Systems
470%
Highest % of MCL

Compounds Exceeding EPA Limits

PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 470% of limit
Detected: 18.80 ppt
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 123% of limit
Detected: 4.90 ppt

What this means for you

One or more PFAS compounds were measured above the EPA's enforceable drinking water limit at a utility serving ZIP 28115. The EPA set these limits because long-term exposure at higher concentrations is associated with health effects including immune suppression, thyroid changes, and cancer risk increases. Standard pitcher filters (Brita, PUR) are not certified to remove PFAS. The most reliable at-home options are under-sink reverse osmosis systems or activated carbon block filters with an NSF/ANSI 58 certification specifically listing PFOA/PFOS reduction. Your water utility is required to bring levels into compliance by 2029 — filtering at the tap is the practical interim step if you'd like additional protection now.

IREDELL WATER CORPORATION

NC0149025 High Risk
Water Type
Groundwater
PFAS Detected
9
Above MCL
2
State
North Carolina
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOA
Perfluorooctanoic acid
18.80ppt
470% of limit
4 ppt⚠ Exceeds MCL
PFOS
Perfluorooctane sulfonic acid
4.90ppt
123% of limit
4 ppt⚠ Exceeds MCL
PFHxS
Perfluorohexane sulfonic acid
3.60ppt
36% of limit
10 pptBelow limit
lithium
9060.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
60.60pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
30.50pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
14.70pptNo federal limitUnregulated
PFHpA
Perfluoroheptanoic acid
9.90pptNo federal limitUnregulated
Show 1 more compound detected at low levels
PFBSPerfluorobutane sulfonic acid6.20 pptNo federal limit

HARBOUR POINT S/D

NC0149185 Low Level
Water Type
Groundwater
PFAS Detected
4
Above MCL
0
State
North Carolina
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFHxA
Perfluorohexanoic acid
16.90pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
11.50pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
9.20pptNo federal limitUnregulated
PFHpA
Perfluoroheptanoic acid
3.00pptNo federal limitUnregulated
Note: ZIP code 28115 is served by 2 separate water utilities. Results above show data for each system independently.
About this data
Source
EPA UCMR 5 (Unregulated Contaminant Monitoring Rule, 5th cycle)
Data released
January 2026
Sampling period
January 2023 – December 2025
Systems tested
~10,000 public water systems serving > 25 people
Water systems (PWSID)
NC0149025, NC0149185
Detection threshold (MRL)
~1.5–2 ppt — "Not detected" means below this floor, not zero

Values shown are the highest single-sample concentration measured at entry points to the distribution system. Results reflect water quality at the treatment plant — aging pipes, building plumbing, and on-site storage can affect what actually reaches your tap.