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CRESCENTA VALLEY CWD

PWS ID: CA1910028 · LA CRESCENTA, California 91214

PFAS Detected

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

Population Served
35,841
Total Violations
9
Health-Based Violations
6
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
8,267
County
Los Angeles
School/Daycare
No
MCL Violations
6
Monitoring Violations
0
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 4 1994
Nitrate MCL 2 1996

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 42 of 478 samples detected PFAS.

Contaminant Date Result MRL Status
NMeFOSAA 5/9/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFNA 5/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFDoA 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 5/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 5/9/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFHxA 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 5/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 5/9/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFEESA 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 5/9/2023 <9 µg/L 9 µg/L Not Detected
PFHpS 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
HFPO-DA 5/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 5/9/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFUnA 5/9/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFMBA 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/9/2023 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 5/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 5/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 5/9/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 5/9/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/9/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFNA 2/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
9Cl-PF3ONS 2/22/2023 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 2/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 2/22/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 2/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 2/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 2/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 2/22/2023 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 2/22/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFOS 2/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 2/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 2/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 2/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
lithium 2/22/2023 45.0000 µg/L 9 µg/L Detected
PFOA 2/22/2023 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 2/22/2023 <0.02 µg/L 0.02 µg/L Not Detected
HFPO-DA 2/22/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHxS 2/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 2/22/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 2/22/2023 <0.008 µg/L 0.008 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.