When rain falls in natural areas, the water is absorbed and filtered by soil and plants. In urban areas, the rain water cannot absorb into the ground. This stormwater flows over hard surfaces, picking up pollution and carrying it into nearby waterways.
Green infrastructure uses vegetation, soils, and other elements to restore the natural processes required to manage and clean stormwater.
Traditional stormwater infrastructure, called gray infrastructure, includes storm drains and pipes which concentrate and move stormwater away from the built environment and into streams, untreated.
The City’s oldest stormwater pipes are over 100 years old. This public system consists of approximately 300 miles of pipes.
Crews routinely inspect and rank pipe integrity using closed circuit television (CCTV).
The following lining projects will begin later this Summer. More than one mile of pipe will be repaired.
City of Allentown - 435 Hamilton Street - 610-439-5999