This case study explores how a risk-based, multi-barrier blackwater treatment system at San Francisco’s Mission Rock meets stringent microbial log reduction targets to enable safe, large-scale onsite non-potable water reuse.

From rainwater harvesting to geothermal systems and smart leak detection, John A. Mullen explores how cutting-edge plumbing strategies are reshaping sustainable design in 2025 to meet the challenges of climate change, efficiency, and public health.

Austin’s tallest building, the 74-story Waterline, uses PEX and CPVC piping to boost energy efficiency, cut installation costs by 20%, and meet LEED Gold goals—earning Project of the Year honors.

What does it take to build the world’s first stadium for a professional women’s soccer team? At CPKC Stadium, sustainable plumbing, smart drainage, and innovative design come together to redefine game day — and green building — in Kansas City.

The project involved a complete overhaul of the school’s previously deteriorating sanitation infrastructure, which included poor hygiene conditions and broken toilets. 

From stadiums to civic offices, cutting-edge rainwater reuse systems are transforming green plumbing from theory to reality—saving water, slashing costs, and reshaping the industry’s role in sustainability.

Contractor Warren Systems worked with a team of pros to provide retrofit at a much lower upfront cost than a conventional VRF installation.

Off-site manufacturing is shifting the building process to a controlled manufacturing environment. 

The 1 Java Street project in NYC’s Brooklyn borough is the largest mixed-use development in New York state to incorporate a ground-source geothermal system for heating and cooling.

Professional Piping Inc’s hydronics work on earns an A+ on two hydronics products for Mead School District.