PlainWater
States → California

NORTHROP GRUMMAN CORP.

PWS ID: CA1910097 · PALMDALE, California 93550

PFAS Detected

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

Population Served
6,214
Total Violations
19
Health-Based Violations
2
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
38
County
Los Angeles
School/Daycare
No
MCL Violations
0
Monitoring Violations
16
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MR 5 2023
Total Haloacetic Acids (HAA5) MR 5 2023
Coliform (TCR) MR 4 2013
Lead and Copper Rule MR 2 1995
Lead and Copper Rule TT 2 2007

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 19 of 270 samples detected PFAS.

Contaminant Date Result MRL Status
PFMPA 9/9/2025 <0.004 µg/L 0.004 µg/L Not Detected
6:2 FTS 9/9/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 9/9/2025 0.0044 µg/L 0.003 µg/L Detected
11Cl-PF3OUdS 9/9/2025 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 9/9/2025 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 9/9/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/9/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFPeA 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/9/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 9/9/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 9/9/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 9/9/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 9/9/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 9/9/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFOA 9/9/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 9/9/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/9/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHxS 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/9/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/9/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
lithium 9/9/2025 <9 µg/L 9 µg/L Not Detected
PFBA 9/9/2025 0.0221 µg/L 0.005 µg/L Detected
PFDA 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 9/9/2025 <0.005 µg/L 0.005 µg/L Not Detected
lithium 9/9/2025 <9 µg/L 9 µg/L Not Detected
PFBS 9/9/2025 0.0647 µg/L 0.003 µg/L Detected
PFHpA 9/9/2025 0.0047 µg/L 0.003 µg/L Detected
PFHxS 9/9/2025 0.0035 µg/L 0.003 µg/L Detected
PFMPA 9/9/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 9/9/2025 0.0376 µg/L 0.003 µg/L Detected
PFMBA 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/9/2025 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 9/9/2025 0.0052 µg/L 0.004 µg/L Detected
PFHpS 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/9/2025 <0.002 µg/L 0.002 µg/L Not Detected
9Cl-PF3ONS 9/9/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 9/9/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 9/9/2025 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 9/9/2025 <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.