PlainWater
States → California

CITY OF CORNING

PWS ID: CA5210001 · CORNING, California 96021

PFAS Detected

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

Population Served
8,244
Total Violations
31
Health-Based Violations
27
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
2,438
County
Tehama
School/Daycare
No
MCL Violations
27
Monitoring Violations
0
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 27 2004
LEAD AND COPPER RULE REVISIONS RPT 1 2025

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 420 samples detected PFAS.

Contaminant Date Result MRL Status
11Cl-PF3OUdS 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/7/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/7/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFOS 8/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 8/7/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 8/7/2024 <0.008 µg/L 0.008 µg/L Not Detected
NMeFOSAA 8/7/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFMPA 8/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 8/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/7/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 8/7/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/7/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/7/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 8/16/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 8/16/2023 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 8/16/2023 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 8/16/2023 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 5/2/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFBS 5/2/2023 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 5/2/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/2/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 5/2/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 5/2/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/2/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/2/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/2/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFTrDA 5/2/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFHpS 5/2/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 5/2/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 5/2/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFHpA 5/2/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/2/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHxA 5/2/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 5/2/2023 <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.