PlainWater
States → California

MONTEBELLO LAND & WATER CO.

PWS ID: CA1910091 · MONTEBELLO, California 90640

PFAS Detected

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

Population Served
26,554
Total Violations
9
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
3,948
County
Los Angeles
School/Daycare
No
MCL Violations
4
Monitoring Violations
2
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 4 1992
Lead and Copper Rule MR 2 2023

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 39 of 180 samples detected PFAS.

Contaminant Date Result MRL Status
PFHxA 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 8/29/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFNA 8/29/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 8/29/2023 0.0430 µg/L 0.004 µg/L Detected
PFTA 8/29/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFHxS 8/29/2023 0.0071 µg/L 0.003 µg/L Detected
PFHpA 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/29/2023 0.0039 µg/L 0.003 µg/L Detected
lithium 8/29/2023 <9 µg/L 9 µg/L Not Detected
NEtFOSAA 8/29/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/29/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFDoA 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 8/29/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFPeA 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/29/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/29/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeS 8/29/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/29/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFMPA 8/29/2023 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 8/29/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/29/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/29/2023 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 8/29/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/29/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 8/29/2023 <0.002 µg/L 0.002 µg/L Not Detected
lithium 8/29/2023 <9 µg/L 9 µg/L Not Detected
PFTA 8/29/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 8/29/2023 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 8/29/2023 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 8/29/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 8/29/2023 0.0110 µg/L 0.003 µg/L Detected
PFHpA 8/29/2023 0.0035 µg/L 0.003 µg/L Detected
PFHxS 8/29/2023 0.0086 µg/L 0.003 µg/L Detected
PFNA 8/29/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/29/2023 0.0470 µg/L 0.004 µg/L Detected
PFOA 8/29/2023 0.0160 µg/L 0.004 µg/L Detected
PFDA 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 8/29/2023 0.0140 µg/L 0.005 µg/L Detected
PFHxA 8/29/2023 0.0050 µg/L 0.003 µg/L Detected
PFHpS 8/29/2023 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/29/2023 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 8/29/2023 <0.002 µg/L 0.002 µg/L Not Detected
HFPO-DA 8/29/2023 <0.005 µg/L 0.005 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.