Water Quality

Regulations

The Environmental Quality section identifies areas with groundwater contamination, investigates contamination sources, and develops regulations to prevent groundwater contamination above health-based standards.

ATCP 29.45
Section of rules dealing with mixing and loading of any quantity of pesticides by any person.

ATCP 30
Pesticide product restrictions including the restricted use of the herbicide atrazine.

ATCP 30 - Appendix A
Atrazine prohibition areas in Wisconsin

ATCP 31
Rules for the state agriculture department to protect groundwater.

ATCP 33
Rules for storage and handling of bulk quantities of pesticides and fertilizers.

ATCP 35
Rules for administering the Agricultural Chemical Cleanup Program.

ATCP 35 Interpretations
A guidance document for interpreting ATCP 35.

Chapter 94.73
Section of the state statutes authorizing the Agricultural Chemical Cleanup Program.

Chapter 160
Our authority to restrict the use of a pesticide that is contaminating groundwater at levels above health-based standards is found in this statute.

Chapter 292.11
Section of the state statutes dealing with hazardous substance spills.

NR 140
The rule establishes groundwater quality standards for substances detected in groundwater or substances that may enter Wisconsin groundwater

NR 141
This rule sets minimum acceptable standards for design, installation, construction, abandonment and documentation of groundwater monitoring wells.

NR 700
A web page index with the NR700 rules for performing environmental cleanup projects in Wisconsin.