What does it mean to be an MS4 Community?

MS4 Basics


Only Rain in the Drain

Only Rain in the Drain


US Environmental Protection Agency


Northampton County Conservation District


PA Department of Environmental Protection


When It Rains It Drains. Understanding stormwater and how it can affect your money, safety, health and the environment. 

Rain Drain Brochure 





What is Storm Water?

Storm Water is water from precipitation that flows across the ground and pavement when it rains or when snow and ice melt.  The water seeps into the ground or drains into what we call storm sewers.  These are the drains you see at street corners or at low points on the side of streets.  Collectively, the draining water is called storm water runoff.

Why is Storm Water “Good Rain Gone wrong?”

Storm water becomes a problem when it picks up debris, chemicals, dirt and other pollutants as it flows or when it causes flooding and erosion of stream banks.  Storm water travels through a system of pipes and roadside ditches that make up storm sewer systems.  It eventually flows directly to a lake, river, stream, wetland or coastal water.  All of the pollutants water carries along the way empty into our water, too, because storm water does not get treated!

Where to Go to Continue the Information Flow?

Your community is preventing storm water pollution through a storm water management program.  The program addresses storm water pollution from construction, new development, illegal dumping to the storm sewer system, pollution prevention and good housekeeping practices in municipal operations.  It will also continue to educate the community and get everyone involved in making sure the only thing that storm water contributes to our water is…water.  Contact the Pennsylvania Department of Environmental Protection for more information about storm water management.

*The above article is an excerpt from the PADep brochure When It Rains, It Drains – Understanding Storm Water and How It Can Affect Your Money, Safety, Health and the Environment.