PlainWater
States → Navajo Nation

Mexican Water NTUA

PWS ID: NN4903072 · Ft Defiance, Navajo Nation 86504

Population Served
294
Total Violations
141
Health-Based Violations
36
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Native American
Connections
86
School/Daycare
No
MCL Violations
36
Monitoring Violations
62
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 36 2024
Public Notice Other 15 2024
Arsenic MR 5 2022
Coliform (TCR) MR 3 2012
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 3 2013
CYANIDE MR 3 2008
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2011
ETHYLENE DIBROMIDE MR 2 2011
Xylenes, Total MR 2 2011
Vinyl chloride MR 2 2011
1,2-Dichloroethane MR 2 2011
Carbon tetrachloride MR 2 2011
1,1,2-Trichloroethane MR 2 2011
CHLOROBENZENE MR 2 2011
Benzene MR 2 2011
Styrene MR 2 2011
Revised Total Coliform Rule Other 2 2016
cis-1,2-Dichloroethylene MR 2 2011
Trichloroethylene MR 2 2011
1,1-Dichloroethylene MR 2 2011
DICHLOROMETHANE MR 2 2011
Ethylbenzene MR 2 2011
1,1,1-Trichloroethane MR 2 2011
p-Dichlorobenzene MR 2 2011
1,2,4-Trichlorobenzene MR 2 2011
1,2-Dichloropropane MR 2 2011
Toluene MR 2 2011
trans-1,2-Dichloroethylene MR 2 2011
Tetrachloroethylene MR 2 2011
o-Dichlorobenzene MR 2 2011
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.