The Allegheny County Sanitary Authority (Alcosan) is under consent agreements to comply with county health, state and federal clean water mandates by 2026. The cost of updating the sewer systems is estimated at $3 billion. A local Landscape Architect has designed a program to precision map water runoff locations and pinpoint the ideal places for installation of green infrastructure. Green infrastructure, such as rain gardens, swales, water sculpture and underground systems, are designed to diver rain from flowing into treatment pipes. The green infrastructure allows the rain to infiltrate the ground like it’s supposed to, preventing sewage overflows and sparing rate payers unnecessary treatment costs.