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DSW Effective Rules

The Division of Surface Water (DSW) develops and enforces rules in the Ohio Administrative Code (OAC).

Ohio EPA surface water quality protection and wastewater pollution control regulations are located in OAC Chapters 3745-1 to 3745-5, 3745-11, 3745-32 to 3745-33, 3745-36, 3745-38 to 3745-40, and 3745-42. Additional chapters are added as needed to address new laws and requirements related to surface waters.

Search Tips

To search for rules in the table below, type the number or keyword into the search bar. The table can also be sorted by any column - click on the arrow to the right of the column title. For links to the entire chapter, see the reference section below or type # into the search area of the table at the bottom of the page.

Chapter References

Clicking on the chapter link below will open a PDF of the entire rule chapter. To see individual rules, use the table below.

Additional Information and Resources

Proposing new rules and amending existing rules is a regular activity conducted by Ohio EPA in response to laws passed by the Ohio General Assembly and federal rule requirements. DSW is required by federal law to review water quality standards regulations every three years and by state law to review rules at least once every five years to ensure their continued need and relevance.

Links to outside sites which may be of use to individuals interested in rules or the rule-making process include the Register of Ohio, which contains all state agency rule proposal packages and the Joint Committee on Agency Rule Review, which is the legislative committee responsible for the review and processing of all state agency rules.

All State of Ohio rules and regulations are available online through Ohio's Official Online Publication of State Laws and Regulations. Because the online documents may not be updated as soon as changes are made, we recommend that you follow the links below to see specific rules and regulations by division to ensure that you are referencing the most current version.

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