PlainWater
States → Navajo Nation

Chinle-Many Farms-Del Muerto NTUA

PWS ID: NN0400174 · Ft Defiance, Navajo Nation 86504

PFAS Detected

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

Population Served
8,458
Total Violations
302
Health-Based Violations
24
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
2,473
School/Daycare
No
MCL Violations
24
Monitoring Violations
256
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 24 2014
Revised Total Coliform Rule MON 12 2017
Coliform (TCR) MR 11 2012
Beryllium, Total MR 7 2020
Cadmium MR 7 2020
1,2,4-Trichlorobenzene MR 6 2011
cis-1,2-Dichloroethylene MR 6 2011
Xylenes, Total MR 6 2011
DICHLOROMETHANE MR 6 2011
o-Dichlorobenzene MR 6 2011
p-Dichlorobenzene MR 6 2011
Vinyl chloride MR 6 2011
1,1-Dichloroethylene MR 6 2011
trans-1,2-Dichloroethylene MR 6 2011
1,2-Dichloroethane MR 6 2011
1,1,1-Trichloroethane MR 6 2011
1,2-Dichloropropane MR 6 2011
Trichloroethylene MR 6 2011
1,1,2-Trichloroethane MR 6 2011
Tetrachloroethylene MR 6 2011
CHLOROBENZENE MR 6 2011
Benzene MR 6 2011
Toluene MR 6 2011
Ethylbenzene MR 6 2011
Styrene MR 6 2011
Total Haloacetic Acids (HAA5) MR 6 2021
TTHM MR 6 2021
Carbon tetrachloride MR 6 2011
CYANIDE MR 5 2011
Arsenic MR 4 2011

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 30 samples detected PFAS.

Contaminant Date Result MRL Status
PFOA 6/23/2025 <0.004 µg/L 0.004 µg/L Not Detected
9Cl-PF3ONS 6/23/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFDoA 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 6/23/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 6/23/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFDA 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
ADONA 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 6/23/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 6/23/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFMPA 6/23/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 6/23/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 6/23/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFNA 6/23/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFTrDA 6/23/2025 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 6/23/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 6/23/2025 <0.006 µg/L 0.006 µg/L Not Detected
lithium 6/23/2025 37.8000 µg/L 9 µg/L Detected
PFBS 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 6/23/2025 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 6/23/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFPeS 6/23/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 6/23/2025 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 6/23/2025 <0.005 µg/L 0.005 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.