CheckPFAS

ZIP Code 36541

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.

5
PFAS Detected
2
Above EPA Limits
3
Water Systems
785%
Highest % of MCL

Compounds Exceeding EPA Limits

PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 785% of limit
Detected: 31.40 ppt
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 673% of limit
Detected: 26.90 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 36541. 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.

GRAND BAY WATER WORKS BOARD

AL0000983 High Risk
Water Type
Groundwater
PFAS Detected
3
Above MCL
2
State
Alabama
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOA
Perfluorooctanoic acid
31.40ppt
785% of limit
4 ppt⚠ Exceeds MCL
PFOS
Perfluorooctane sulfonic acid
26.90ppt
673% of limit
4 ppt⚠ Exceeds MCL
PFHpA
Perfluoroheptanoic acid
4.40pptNo federal limitUnregulated

MOBILE COUNTY WATER & FIRE PRO AUTHORITY

AL0001002 Low Level
Water Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Alabama
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
13700.00pptNo federal limitUnregulated

ST. ELMO-IRVINGTON WATER AUTHORITY

AL0001031 Low Level
Water Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Alabama
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
6:2 FTS
6:2 Fluorotelomer sulfonic acid
7.40pptNo federal limitUnregulated
Note: ZIP code 36541 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)
AL0000983, AL0001002, AL0001031
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.