PlainWater
States → Navajo Nation

Sweetwater NTUA

PWS ID: NN0400399 · Ft Defiance, Navajo Nation 86504

Population Served
2,014
Total Violations
156
Health-Based Violations
44
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Native American
Connections
589
School/Daycare
No
MCL Violations
44
Monitoring Violations
68
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 37 2025
Public Notice Other 23 2024
Arsenic MR 8 2022
Coliform (TCR) MCL 4 2015
Coliform (TCR) MR 4 2012
Total Polychlorinated Biphenyls (PCB) MR 3 2008
TTHM MCL 3 2020
1,2-DIBROMO-3-CHLOROPROPANE MR 3 2008
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 3 2013
ETHYLENE DIBROMIDE MR 3 2008
1,2,4-Trichlorobenzene MR 2 2008
Xylenes, Total MR 2 2008
DICHLOROMETHANE MR 2 2008
o-Dichlorobenzene MR 2 2008
p-Dichlorobenzene MR 2 2008
Vinyl chloride MR 2 2008
1,1-Dichloroethylene MR 2 2008
trans-1,2-Dichloroethylene MR 2 2008
1,2-Dichloroethane MR 2 2008
1,1,1-Trichloroethane MR 2 2008
Carbon tetrachloride MR 2 2008
1,2-Dichloropropane MR 2 2008
Trichloroethylene MR 2 2008
1,1,2-Trichloroethane MR 2 2008
CHLOROBENZENE MR 2 2008
Benzene MR 2 2008
Toluene MR 2 2008
Ethylbenzene MR 2 2008
Styrene MR 2 2008
Tetrachloroethylene MR 2 2008
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.