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300 W. Davis, Conroe
Conroe, Texas 77301

Business Hours
Monday- Thursday 7:30am-5:30pm
Friday 8am-5pm

Phone: 936.522.3100

MS4 Permit

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Communities classified by the Census Bureau as urbanized based on population density are required by the Environmental Protection Agency (EPA) to become part of the MS4 program and to implement measures to keep pollutants out of their storm water system.  The intent of the program is to keep pollutants out of the nation’s streams, lakes, rivers, and other water bodies. Municipal Separate Storm Sewer Systems (MS4s) include streets, channels, gutters, ditches, and anything else publicly owned that is used to collect or transport storm water.

In Texas, the MS4 program is overseen by the Texas Commission on Environmental Quality (TCEQ). The City of Conroe has been determined by the TCEQ to be a Phase II (Small) MS4 City, and thus is required by the TCEQ to implement various best management practices to limit pollution from storm water discharges within the city limits. More information regarding these TCEQ requirements may be viewed at

Poorly managed construction sites are a major source of polluted storm water, therefore, MS4s are required to reduce this risk. The City of Conroe is required to administer TCEQ rules regulating construction activity.  More information regarding these TCEQ rules may be viewed at

In compliance with TCEQ rules, the City of Conroe requires that all construction activities disturbing one or more acres (or those which are part of a common plan of development disturbing one or more acres) obtain an MS4 permit prior to starting work.  The City of Conroe MS4 permit application, including more information and an associated fee schedule, may be viewed at this link.

Application for City of Conroe MS4 Permit