From 2" monitoring wells, to 4" house wells, to 6" farm wells, to 10" industrial wells to 30" municipal wells, Thein Well Rochester can do it all!   We currently run 4 rotary drilling rigs in regular rotation (capable of both Air and Mud Rotary drilling), one municipal table-drive rig, a bantam trailer rig for tight spaces and a bucket rig for large diameter surface excavations.   Contact us for a free estimate!

Information on well drilling in Minnesota

Click on noted pics to be taken to website for additional information

Isolation distances between a well and potential contamination sources

Well Owner's Guide
(click TIPS to go to site)

Aquifers of Southeast Minnesota

Nitrate risks in aquifers of Southeast Minnesota

Minnesota's diverse water availability

Information about the CAMBRIAN-ORDOVICIAN AQUIFER SYSTEM that we use in Southeast Minnesota
(Click on picture to be taken to informational website)

Freeborn County "First Rock" Construction Map

Olmsted County Maps of where the construction MUST be to the Jordan Sandstone (or deeper)


Dodge County areas where first rock wells AREN'T allow indicated by bubbles

Mower County areas where variances are required

Fillmore County Restricted Construction Areas

Rice County Prairie Du Chien and Galena restricted zones

Steele County Galena restricted areas

Olmsted County Depth to Bedrock

Winona County Depth to Bedrock

Fillmore County Aquifer Sensitivity to Pollution

Houston County Depth to Bedrock

Houston County Special Construction Area where potable wells MUST be completed to at least the Franconia formation