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States → Washington

LIBERTY LAKE SEWER & WATER DISTRICT

PWS ID: WA5347150 · Liberty Lake, Washington 99019

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
14,212
Total Violations
27
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
5,424
County
Spokane
School/Daycare
No
MCL Violations
4
Monitoring Violations
23
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 4 2000
Cadmium MR 2 2008
Chromium MR 2 2008
Mercury MR 2 2008
Selenium MR 2 2008
Barium MR 2 2008
Fluoride MR 2 2008
Arsenic MR 2 2008
CYANIDE MR 1 2008
Nickel MR 1 2008
Antimony, Total MR 1 2008
Coliform (TCR) MR 1 1996
Nitrate MR 1 1979
Gross Alpha, Excl. Radon and U MR 1 1979
Lead and Copper Rule MR 1 2000
Thallium, Total MR 1 2008
Beryllium, Total MR 1 2008

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
PFEESA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFTrDA 5/15/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 5/15/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFPeS 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 5/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
lithium 5/15/2025 <9 µg/L 9 µg/L Not Detected
ADONA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 5/15/2025 <0.008 µg/L 0.008 µg/L Not Detected
6:2 FTS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFOS 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/15/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFMBA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
lithium 5/15/2025 <9 µg/L 9 µg/L Not Detected
6:2 FTS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 5/15/2025 0.0032 µg/L 0.003 µg/L Detected
PFNA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
9Cl-PF3ONS 5/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/15/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/15/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 5/15/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/15/2025 <0.003 µg/L 0.003 µg/L Not Detected
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.