PlainWater
States → California

EL SEGUNDO-CITY, WATER DEPT.

PWS ID: CA1910040 · EL SEGUNDO, California 90245

PFAS Detected

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

Population Served
16,445
Total Violations
4
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
6,364
County
Los Angeles
School/Daycare
No
MCL Violations
0
Monitoring Violations
4
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 2 1993
Lead and Copper Rule MR 2 2019

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 70 samples detected PFAS.

Contaminant Date Result MRL Status
NEtFOSAA 7/31/2025 <0.005 µg/L 0.005 µg/L Not Detected
lithium 7/31/2025 <9 µg/L 9 µg/L Not Detected
PFTrDA 7/31/2025 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 7/31/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFTA 7/31/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFPeS 4/30/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 4/30/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 4/30/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 4/30/2025 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 4/30/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 4/30/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFMPA 4/30/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 4/30/2025 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 4/30/2025 <0.02 µg/L 0.02 µg/L Not Detected
ADONA 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 4/30/2025 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 4/30/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 4/30/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 4/30/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 4/30/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 4/30/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 4/30/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 4/30/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFNA 4/30/2025 <0.004 µg/L 0.004 µg/L Not Detected
lithium 4/30/2025 31.0000 µg/L 9 µg/L Detected
ADONA 3/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 3/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 3/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 3/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 3/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 3/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 3/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 3/7/2025 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 3/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 3/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 3/7/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 3/7/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFBS 3/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 3/7/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 3/7/2025 <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.