CheckPFAS

ZIP Code 29180

High Risk
High Risk PFAS Risk Level

PFAS above EPA limits detected

4 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.

12
PFAS Detected
4
Above EPA Limits
3
Water Systems
820%
Highest % of MCL

Compounds Exceeding EPA Limits

PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 118% of limit
Detected: 4.70 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 115% of limit
Detected: 4.60 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 29180. 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.

CHESTER METROPOLITAN DISTRICT (1220002)

SC1220002 High Risk
Water Type
Surface Water
PFAS Detected
4
Above MCL
2
State
South Carolina
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
4.70ppt
118% of limit
4 ppt⚠ Exceeds MCL
PFOA
Perfluorooctanoic acid
4.60ppt
115% of limit
4 ppt⚠ Exceeds MCL
PFPeA
Perfluoropentanoic acid
8.90pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
8.50pptNo federal limitUnregulated

WINNSBORO TOWN OF (2010001)

SC2010001 High Risk
Water Type
Surface Water
PFAS Detected
4
Above MCL
1
State
South Carolina
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
32.80ppt
820% of limit
4 ppt⚠ Exceeds MCL
PFHxS
Perfluorohexane sulfonic acid
9.00ppt
90% of limit
10 pptBelow limit
PFPeA
Perfluoropentanoic acid
3.80pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
3.80pptNo federal limitUnregulated

MIDCOUNTY WATER DIST 2 (2020004)

SC2020004 High Risk
Water Type
Surface Water
PFAS Detected
4
Above MCL
1
State
South Carolina
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
20.10ppt
503% of limit
4 ppt⚠ Exceeds MCL
PFHxS
Perfluorohexane sulfonic acid
6.50ppt
65% of limit
10 pptBelow limit
PFPeA
Perfluoropentanoic acid
3.60pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
3.30pptNo federal limitUnregulated
Note: ZIP code 29180 is served by 3 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)
SC1220002, SC2010001, SC2020004
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.