Relating to the regulation of stormwater management by certain counties.

HB 125 amends Texas law to define which counties must follow existing stormwater management regulations under Chapter 573 of the Local Government Code. It applies specifically to: counties with 2.8 million+ residents; districts coterminous with such counties that provide stormwater services; counties over 1.3 million with aquifer-based drinking water; or counties with 800,000+ residents containing part of the Edwards Aquifer or within the Hill Country Priority Groundwater Management Area. The bill does not create new regulations but specifies the geographic and demographic criteria for which jurisdictions fall under the current stormwater management chapter. This change affects county governments and water authorities in those designated areas.