Current Research

Water Softening

View the research web site >>

Otter Tail Water Management Evaluation

Otter Tail Water Management District Septic System Use and Maintenance Evaluation (.pdf)

Minnesota Department of Transportation

Septic System Evaluation at Rest Stops, Truck Station, and Weigh Scales (.pdf)

Water Use Study at Rest Stops (.pdf)

Adult Care Facility Septic System Evaluation

This short-term study of six foster homes and one non-foster system collected laboratory and field data.

Final Report(.pdf)

BWSR Septic System Improvement Estimator

This Estimator is a simple Excel spreadsheet based tool for estimating the improvements made when septic systems are replaced.
Septic System Improvement Estimator (.xls)
Users Guide (.pdf)

Stocking Lake Watershed - Soil Phosphorus Study

This project sampled soils along topographic gradients to determine potential movement of phosphorus from source areas to off-site locations (e.g. lakes, rivers and streams).
Research Summary (.pdf)

Laboratory Manufactured High Strength Waste Study

Research Summary (.pdf)
A laboratory study to develop a standardized high strength waste that could be used to test relative effectiveness of various pretreatment devices.

Rice County Seepage Pit (Dry Well) Research Summary

Full Report (.pdf)
A field investigation of dry well systems to determine if these systems meet current compliance criteria in the State of Minnesota.
Research Brief (.pdf)

Long-Term Soil Hydrology Research Sites

Read about their establishment (.pdf)
*Available with permission from the Minnesota Onsite Sewage Treatment Contractor Association Newsletter The Little Digger*

Milk House Project

Research on milk house wastewater treatment. View the Project's Web site >>

Demonstration Sites

In addition to our research on technologies, we have partnered with many local government units to study the interaction of soils and landscape-scale hydrology and the design considerations