Capabilities > Stormwater Management & Water Quality



RES Stormwater Management & Water Quality Solutions

The goal of a “green infrastructure” or “nature-based” water resource restoration project is to supplement or replace traditional “gray” infrastructure with natural processes that better manage the negative impacts of stormwater.


Stormwater Management &
Nutrient Reduction


Rethinking stormwater

Projects can redirect stormwater to recharge groundwater systems; remove sediment, nutrients, or toxic pollutants before they get into streams or drinking water supplies; or repurpose stormwater for irrigation and other public uses.

A key to this approach is to think of stormwater as an asset to be better used instead of a problem that has to be controlled.

These projects are typically more cost-effective and offer greater benefits to local communities.

Explore an interactive StoryMap highlighting our innovative approach to tackling MS4 pollutants in Harrisburg, Pennsylvania.

We applaud the superb public/private collaboration with RES, The City of Philadelphia, and the Philadelphia Industrial Corporation to solve a chronic and negative environmental issue that has confounded businesses and residents in South Philadelphia for decades.

This innovative and complex stormwater mitigation engineering project is the result of many months of hard work and a shared willingness for government and business to work together to get something done that others could not.

RES is an outstanding member of our City’s business community and we applaud their leadership and stewardship on this project.

Rob Wonderling

President & CEO, Chamber of Commerce for Greater Philadelphia


Solution looks like:
  • 401 Clean Water Act (CWA)
  • Municipal Separate Storm Sewer System (MS4)
  • Total Maximum Daily Loads (TMDL) mandates
  • Stormwater management
  • Nutrient reduction
  • Nutrient trading, credit
  • Stream restoration
  • Green infrastructure
  • Green Best Management Practices (BMPs)
Monarch butterfly

Resiliency results looks like:
  • Reduced algae blooms and low oxygen “dead zones”
  • Less flooding
  • Cleaner, healthier water for aquatic species and local communities

Unique role of restoration
  • Mimics and boosts natural systems for safely recharging groundwater and preventing/reducing toxic runoff.
  • Nature-based green infrastructure provides public amenities like street trees and green spaces that traditional stormwater treatment does not.

What RES stands for:
Green infrastructure projects that mature into self-sufficiency.