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States → Michigan

GENESEE COUNTY WATER SYSTEM

PWS ID: MI0002615 · FLINT, Michigan 48532-2617

Population Served
73,726
Total Violations
30
Health-Based Violations
4
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
19,453
County
Genesee
School/Daycare
No
MCL Violations
0
Monitoring Violations
26
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MR 13 2022
Total Haloacetic Acids (HAA5) MR 6 2013
Coliform (TCR) MR 4 2011
Lead and Copper Rule TT 4 2018
Lead and Copper Rule MR 3 2014

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 120 samples detected PFAS.

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