PlainWater
States → Wyoming

GILLETTE, CITY OF

PWS ID: WY5600019 · GILLETTE, Wyoming 82716

PFAS Detected

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

Population Served
32,222
Total Violations
6
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
10,637
County
Campbell
School/Daycare
No
MCL Violations
1
Monitoring Violations
3
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 1 2023
Chlorine MR 1 2023
Coliform (TCR) MCL 1 1995
Coliform (TCR) MR 1 1995

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFHxS 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 5/13/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFPeA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 5/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 5/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 5/13/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFNA 5/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 5/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 5/13/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 5/13/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 5/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 5/13/2025 <0.006 µg/L 0.006 µg/L Not Detected
9Cl-PF3ONS 5/13/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFDA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 5/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHxA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 5/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 5/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
lithium 5/13/2025 12.0000 µg/L 9 µg/L Detected
PFMBA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 5/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 5/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFBS 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 5/13/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 5/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 5/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 5/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 5/13/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 5/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
9Cl-PF3ONS 5/13/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFOA 5/13/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 5/13/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 5/13/2025 <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.