Many only think about the water systems that support our country when there is a drought or disaster, but the systems that provide millions of Americans with clean water and environmentally safe wastewater management are a critical part of everything we do. As technology changes and systems age, we work closely with you and your design team to understand your wastewater and water treatment plant construction requirements, then build to meet the needs of your community.  

Beginning with preconstruction, we ensure our quality and safety measures are embedded in every aspect of our wastewater and water treatment plant construction projects. McCarthy is a water treatment contractor and wastewater treatment contractor that knows by building projects right the first time, we are better positioned to deliver plans on time and on budget — if not ahead of schedule and for less than expected.  

Water/Wastewater Construction Expertisewater design-build council

  • Water treatment 
  • Water reclamation 
  • Wastewater treatment 



Antonya Williams

Antonya Williams

6225 N 24th St
Ste 200
Phoenix, AZ 85016

Latest Water & Wastewater News

Recent Water & Wastewater Awards

az water association logo
2019 Project of the Year

Wastewater Treatment Plant
Ocotillo Water Reclamation Facility
Arizona Water Association

2018 ENR Best Project

Ocotillo Water Reclamation Facility
ENR Southwest

2017 Excellence in Construction

Ice Award
San Jacinto River Authority
Surface Water Treatment Facility
ABC Greater Houston

Engineering News Record logo
2016 Best Project, Moutain States

Water/Environment & Judges' Recognition
Southern Delivery System Program
ENR Mountain States

Subscribe to RSS - Water & Wastewater