CheckPFAS

ZIP Code 98503

High Risk
High Risk PFAS Risk Level

PFAS above EPA limits detected

6 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.

31
PFAS Detected
6
Above EPA Limits
7
Water Systems
3840%
Highest % of MCL

Compounds Exceeding EPA Limits

PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 3840% of limit
Detected: 153.60 ppt
PFHxS Exceeds EPA limit
0 ppt MCL: 10 ppt 558% of limit
Detected: 55.80 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 158% of limit
Detected: 6.30 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 98503. 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.

ARTONDALE WATER SYSTEM

WA5303160 High Risk
Water Type
Groundwater
PFAS Detected
8
Above MCL
3
State
Washington
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
153.60ppt
3840% of limit
4 ppt⚠ Exceeds MCL
PFHxS
Perfluorohexane sulfonic acid
55.80ppt
558% of limit
10 ppt⚠ Exceeds MCL
PFOA
Perfluorooctanoic acid
6.30ppt
158% of limit
4 ppt⚠ Exceeds MCL
PFBS
Perfluorobutane sulfonic acid
28.90pptNo federal limitUnregulated
PFPeS
19.40pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
16.90pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
13.90pptNo federal limitUnregulated
PFHpA
Perfluoroheptanoic acid
5.60pptNo federal limitUnregulated

HORIZONS WEST

WA5334375 Low Level
Water Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Washington
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
6:2 FTS
6:2 Fluorotelomer sulfonic acid
9.50pptNo federal limitUnregulated

LACEY WATER DEPARTMENT

WA5343500 Low Level
Water Type
Groundwater
PFAS Detected
4
Above MCL
0
State
Washington
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFHxS
Perfluorohexane sulfonic acid
3.10ppt
31% of limit
10 pptBelow limit
PFPeA
Perfluoropentanoic acid
18.80pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
9.80pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
4.20pptNo federal limitUnregulated

MINTERBROOK

WA5354740 Low Level
Water Type
Groundwater
PFAS Detected
3
Above MCL
0
State
Washington
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFBS
Perfluorobutane sulfonic acid
3.90pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
3.30pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
3.10pptNo federal limitUnregulated

PARKVIEW TERRACE

WA5366215 Low Level
Water Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Washington
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFBS
Perfluorobutane sulfonic acid
4.40pptNo federal limitUnregulated

PEACOCK HILL

WA5366637 High Risk
Water Type
Groundwater
PFAS Detected
7
Above MCL
1
State
Washington
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFHxS
Perfluorohexane sulfonic acid
14.90ppt
149% of limit
10 ppt⚠ Exceeds MCL
PFPeA
Perfluoropentanoic acid
25.60pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
18.80pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
16.00pptNo federal limitUnregulated
PFPeS
8.10pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
6.30pptNo federal limitUnregulated
PFHpA
Perfluoroheptanoic acid
3.50pptNo federal limitUnregulated

QUISTORFF

WA5370550 High Risk
Water Type
Groundwater
PFAS Detected
7
Above MCL
2
State
Washington
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFHxS
Perfluorohexane sulfonic acid
44.00ppt
440% of limit
10 ppt⚠ Exceeds MCL
PFOS
Perfluorooctane sulfonic acid
12.00ppt
300% of limit
4 ppt⚠ Exceeds MCL
PFBS
Perfluorobutane sulfonic acid
35.00pptNo federal limitUnregulated
PFPeS
20.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
17.00pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
17.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
7.10pptNo federal limitUnregulated
Note: ZIP code 98503 is served by 7 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)
WA5303160, WA5334375, WA5343500, WA5354740, WA5366215, WA5366637, WA5370550
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.