National Pollutant Discharge Elimination System - NPDES



Grand Blanc Township is responsible for maintaining, mitigating, and preventing pollution from surface water drainage to enter water bodies near our Municipal campus located at 5371 S Saginaw St. This program is called the National Pollutant Discharge Elimination System or NPDES. Although the Township Campus is just a small part of the Township, we take our responsibility of keeping our drainage to rivers and streams protected. 

Our NPDES program is permitted through the State of Michigan Department EGLE. The permit requires the Township to perform the following requirements:

  • regular township campus housekeeping
  • public education
  • construction inspection and observation
  • ensuring compliance of the Township SWMP

VIOLATION NOTICE: Grand Blanc Township received a violation notice in early 2020 stating that we were out of compliance due to missing progress reports from 2014 - 2019.  This violation has been rectified and the missing progress reports have been turned into MI-EGLE. 

2020 Violation Notice

WATERSHEDS
A watershed is a specific area of land that surface water drains to a larger river, stream, or Lake.  In a large storm event, water from our Township campus parking lots and DPW work areas will wash into the drains traveling through underground storm sewer network before entering the marsh north of our property. The marsh will hold water for some time but even a couple of inches of rain will fill the marsh and water will eventually flow to the Gibson drain and then to the thread creek.  This is an example of a watershed where surface water travels from one body of water to another until reaching a Great Lake. 
How A Watershed Works