MS4

 

droplet with grate

seedling

Cities, counties, and other public entities commonly utilize municipal separate storm sewer systems (MS4) to collect and convey stormwater runoff in sewer drainage systems that are separate from sanitary sewer systems. Water flowing through the sanitary sewer system goes to treatment facilities where it is cleaned before discharging to waterbodies. However, water flowing through MS4s usually drain directly to waterways without being treated. In order to protect and prevent harmful urban pollutants from entering waterbodies, municipalities of certain sizes must obtain MS4 permits and regulate the discharge of stormwater.


Low-Impact Development Planting Guide

The purpose of this planting guide is to help stormwater professionals select the best plants for the LID-type they are designing as well as the plant’s desired benefits and qualities. This guide was designed to supplement the Utah Division of Water Quali...


Low Impact Urban Development

Existing infrastructure no longer supports current stormwater management needs in many places. The life of current stormwater management systems can be extended through the implementation of low impact development practices.