PlainWater
States → California

HANFORD, CITY OF

PWS ID: CA1610003 · HANFORD, California 93230

Population Served
62,127
Total Violations
454
Health-Based Violations
445
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
19,077
County
Kings
School/Daycare
No
MCL Violations
445
Monitoring Violations
5
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 413 2009
Coliform (TCR) MCL 24 2014
TTHM MCL 8 2021
Nitrate MR 3 2014
Lead and Copper Rule MR 2 2023

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 390 samples detected PFAS.

Contaminant Date Result MRL Status
PFMPA 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFMBA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 5/21/2025 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 5/21/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 5/21/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFHpS 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
lithium 5/21/2025 <9 µg/L 9 µg/L Not Detected
PFPeA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHxS 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/21/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFHpA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFNA 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/21/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 5/21/2025 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFOA 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 5/21/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 5/21/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFOS 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/21/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 5/21/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 5/21/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 5/21/2025 <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.