PlainWater
States → California

CAL AM - BASS LAKE

PWS ID: CA2010003 · SACRAMENTO, California 95838

PFAS Detected

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

Population Served
4,527
Total Violations
8
Health-Based Violations
4
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
1,010
County
Madera
School/Daycare
No
MCL Violations
2
Monitoring Violations
2
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Uranium MCL 2 2006
Lead and Copper Rule MR 2 1996
Surface Water Treatment Rule TT 2 1993

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 7 of 270 samples detected PFAS.

Contaminant Date Result MRL Status
lithium 9/17/2025 <9 µg/L 9 µg/L Not Detected
lithium 9/17/2025 51.2000 µg/L 9 µg/L Detected
lithium 9/17/2025 9.1300 µg/L 9 µg/L Detected
lithium 9/17/2025 43.2000 µg/L 9 µg/L Detected
9Cl-PF3ONS 5/14/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFTA 5/14/2025 <0.008 µg/L 0.008 µg/L Not Detected
HFPO-DA 5/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 5/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 5/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 5/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 5/14/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFHpA 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/14/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 5/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
lithium 5/14/2025 <9 µg/L 9 µg/L Not Detected
PFTrDA 5/14/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 5/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 5/14/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFHpS 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 5/14/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFNA 5/14/2025 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 5/14/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 2/26/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 2/26/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 2/26/2025 0.0075 µg/L 0.005 µg/L Detected
6:2 FTS 2/26/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 2/26/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 2/26/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 2/26/2025 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 2/26/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 2/26/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 2/26/2025 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 2/26/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFHpS 2/26/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 2/26/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 2/26/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 2/26/2025 <0.006 µg/L 0.006 µg/L Not Detected
PFPeA 2/26/2025 <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.