CheckPFAS

ZIP Code 85340

High Risk
High Risk PFAS Risk Level

PFAS above EPA limits detected

3 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.

15
PFAS Detected
3
Above EPA Limits
3
Water Systems
353%
Highest % of MCL

Compounds Exceeding EPA Limits

PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 353% of limit
Detected: 14.10 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 255% of limit
Detected: 10.20 ppt
PFHxS Exceeds EPA limit
0 ppt MCL: 10 ppt 189% of limit
Detected: 18.90 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 85340. 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.

LIBERTY WATER LPSCO

AZ0407046 High Risk
Water Type
Groundwater
PFAS Detected
9
Above MCL
3
State
Arizona
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
14.10ppt
353% of limit
4 ppt⚠ Exceeds MCL
PFOA
Perfluorooctanoic acid
10.20ppt
255% of limit
4 ppt⚠ Exceeds MCL
PFHxS
Perfluorohexane sulfonic acid
18.90ppt
189% of limit
10 ppt⚠ Exceeds MCL
lithium
166000.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
54.60pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
23.20pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
20.30pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
8.40pptNo federal limitUnregulated
Show 1 more compound detected at low levels
PFHpAPerfluoroheptanoic acid6.10 pptNo federal limit

VALLEY UTILITIES WATER COMPANY GLENDALE

AZ0407079 Moderate
Water Type
Groundwater
PFAS Detected
5
Above MCL
0
State
Arizona
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
130000.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
59.00pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
52.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
16.00pptNo federal limitUnregulated
PFHpA
Perfluoroheptanoic acid
10.00pptNo federal limitUnregulated

EPCOR WATER - AGUA FRIA

AZ0407695 Low Level
Water Type
Surface Water
PFAS Detected
1
Above MCL
0
State
Arizona
Data Period
2023–2025

PFAS Test Results

CompoundDetectedvs. EPA LimitEPA LimitStatus
lithium
95700.00pptNo federal limitUnregulated
Note: ZIP code 85340 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)
AZ0407046, AZ0407079, AZ0407695
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.