If you have a tough question about your water, whether it comes from a public water system, or a private well, these are the people to contact. They know a lot about water in Richland County, and even if they can't answer your question, chances are that they will know someone who can!
Richland County Conservation District - (406) 433-2103
MSU Extension Office - Richland County (406) 433-1206
Richland County Health Department - (406) 433-2207
Richland County Sanitarian - (406) 433-2207
City of Sidney Water Department - (406) 433-1117
City of Fairview - (406) 742-5616
City of Lambert Certified Operator - (406) 774-3465 [day] or (406) 774-3317 [night]
Montana Department of Environmental Quality - (406) 841-5000