If this bill were to become law, it would update the definition of "county" in Arizona Revised Statutes section 49-371 to include counties that operate a regulated medium or large separate storm sewer system, in addition to those that operate a small municipal separate storm sewer system. This change is significant as it broadens the scope of counties that are subject to local stormwater quality programs, ensuring that more counties are included under the regulatory framework established by the Clean Water Act.

The bill would specifically delete the term "small" from the current definition, thereby allowing for the inclusion of medium and large systems. The existing language that applies the definition as if the small municipal separate storm sewer system discharged to a WOTUS protected surface water would remain unchanged. Overall, the bill aims to enhance stormwater management and compliance efforts across a wider range of counties in Arizona.

Statutes affected:
Introduced Version: 49-371
House Engrossed Version: 49-371
Chaptered Version: 49-371