PlainWater

ROCKPORT COLONY

PWS ID: MT0001778 · PENDROY, Montana 59467

Population Served
92
Total Violations
203
Health-Based Violations
38
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
10
County
Teton
School/Daycare
No
MCL Violations
38
Monitoring Violations
160
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 24 2012
Lead and Copper Rule MR 10 2020
Nitrate-Nitrite MCL 9 2018
Coliform (TCR) MR 9 2001
Mercury MCL 4 2002
Endrin MR 3 2011
BHC-GAMMA MR 3 2011
Methoxychlor MR 3 2011
Toxaphene MR 3 2011
Dalapon MR 3 2011
Di(2-ethylhexyl) adipate MR 3 2011
OXAMYL MR 3 2011
Simazine MR 3 2011
Picloram MR 3 2011
Hexachlorocyclopentadiene MR 3 2011
Aldicarb sulfoxide MR 3 2011
Aldicarb sulfone MR 3 2011
Atrazine MR 3 2011
Heptachlor MR 3 2011
2,4,5-TP MR 3 2011
HEXACHLOROBENZENE MR 3 2011
Benzo(a)pyrene MR 3 2011
1,2,4-Trichlorobenzene MR 3 2011
cis-1,2-Dichloroethylene MR 3 2011
Xylenes, Total MR 3 2011
o-Dichlorobenzene MR 3 2011
p-Dichlorobenzene MR 3 2011
trans-1,2-Dichloroethylene MR 3 2011
Carbon tetrachloride MR 3 2011
Trichloroethylene MR 3 2011
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.