PlainWater

TWIN HILLS WATER SYSTEM

PWS ID: AK2260032 · TWIN HILLS, Alaska 99576-8996

Population Served
87
Total Violations
493
Health-Based Violations
57
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
28
County
Dillingham Census Area
School/Daycare
No
MCL Violations
9
Monitoring Violations
291
Treatment Tech Violations
48

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 88 2013
Groundwater Rule TT 48 2020
Nitrate MR 20 2024
Revised Total Coliform Rule MON 12 2024
Lead and Copper Rule MR 9 2021
Coliform (TCR) MCL 9 2006
Consumer Confidence Rule Other 5 2021
Mercury MR 4 1999
p-Dichlorobenzene MR 4 2004
1,1,1-Trichloroethane MR 4 2004
Carbon tetrachloride MR 4 2004
Trichloroethylene MR 4 2004
Benzene MR 4 2004
1,1-Dichloroethylene MR 4 2004
1,2-Dichloroethane MR 4 2004
HEXACHLOROBENZENE MR 3 2025
Vinyl chloride MR 3 2004
Heptachlor epoxide MR 3 2025
2,4-D MR 3 2025
Carbofuran MR 3 2025
Simazine MR 3 2025
Heptachlor MR 3 2025
BHC-GAMMA MR 3 2025
Atrazine MR 3 2025
2,4,5-TP MR 3 2025
Benzo(a)pyrene MR 3 2025
ETHYLENE DIBROMIDE MR 3 2025
Endrin MR 3 2025
Endothall MR 3 2025
Di(2-ethylhexyl) phthalate MR 3 2025
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.