PlainWater
States10

TWIN LAKES HUD

PWS ID: 105300010 · NESPELEM, 10 99155

Population Served
42
Total Violations
523
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
16
School/Daycare
No
MCL Violations
0
Monitoring Violations
489
Treatment Tech Violations
7

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 20 2025
Gross Alpha, Excl. Radon and U MR 13 2014
Nitrate MR 12 2023
Coliform (TCR) MR 11 2005
Combined Radium (-226 and -228) MR 9 2014
Benzene MR 8 2020
Combined Uranium MR 8 2014
Atrazine MR 8 2017
Antimony, Total MR 7 2017
Endrin MR 7 2017
Methoxychlor MR 7 2017
Toxaphene MR 7 2017
Simazine MR 7 2017
Di(2-ethylhexyl) phthalate MR 7 2017
LASSO MR 7 2017
Heptachlor epoxide MR 7 2017
HEXACHLOROBENZENE MR 7 2017
DICHLOROMETHANE MR 7 2020
trans-1,2-Dichloroethylene MR 7 2020
1,2-Dichloroethane MR 7 2020
1,1,1-Trichloroethane MR 7 2020
1,2-Dichloropropane MR 7 2020
1,1,2-Trichloroethane MR 7 2020
Tetrachloroethylene MR 7 2020
Toluene MR 7 2020
Ethylbenzene MR 7 2020
Benzo(a)pyrene MR 7 2017
cis-1,2-Dichloroethylene MR 7 2020
Chlorine MR 7 2023
1,2,4-Trichlorobenzene MR 7 2020
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.