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States → Washington

COVINGTON WATER DISTRICT

PWS ID: WA5341650 · Kent, Washington 98042

PFAS Detected

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

Population Served
52,276
Total Violations
21
Health-Based Violations
13
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
19,728
County
King
School/Daycare
No
MCL Violations
13
Monitoring Violations
8
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 13 2006
Coliform (TCR) MR 7 1994
Gross Alpha, Excl. Radon and U MR 1 1979

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 9 of 240 samples detected PFAS.

Contaminant Date Result MRL Status
PFDA 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 7/15/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/15/2024 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 7/15/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 7/15/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/15/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 7/15/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFDoA 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/15/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 7/15/2024 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 7/15/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 7/15/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 7/15/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFHpS 7/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 7/15/2024 <9 µg/L 9 µg/L Not Detected
8:2 FTS 7/15/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 7/15/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFPeS 7/15/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 7/15/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 7/15/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 7/15/2024 <0.006 µg/L 0.006 µg/L Not Detected
lithium 5/15/2024 <9 µg/L 9 µg/L Not Detected
PFHxA 5/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 5/15/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 5/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 5/15/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/15/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/15/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFDoA 5/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/15/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/15/2024 0.0086 µg/L 0.004 µg/L Detected
PFNA 5/15/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 5/15/2024 0.0075 µg/L 0.003 µg/L Detected
PFBS 5/15/2024 0.0130 µg/L 0.003 µg/L Detected
6:2 FTS 5/15/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 5/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 5/15/2024 <0.008 µg/L 0.008 µg/L Not Detected
4:2 FTS 5/15/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 5/15/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 5/15/2024 <0.006 µg/L 0.006 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.