The City of Blue Grass has commissioned a modernized lagoon system that is now shaping regulatory policy across Iowa. Working with Iowa American Water, CMT, and Nexom (an Axius Water company), the community implemented a redesigned submerged attached growth reactor (SAGR) system that cuts footprint and construction costs by more than 50% while achieving reliable cold‑weather ammonia removal.
The Iowa Department of Natural Resources has since approved the revised SAGR sizing criteria used at Blue Grass for statewide application, paving the way for more than 700 lagoon-based facilities in Iowa and thousands across the U.S. to pursue cost‑effective compliance upgrades.
Read the full story published as a featured piece in the January 2026 issue of Water Environment & Technology (WE&T) magazine: A BIG BOON FOR SMALL LAGOONS – How one Iowa lagoon upgrade became a statewide model for cost-effective ammonia removal.
Axius Water Brings Solutions Together for STOPPING NUTRIENT POLLUTION at WEFTEC 2026
Axius Water, now part of Oldcastle Infrastructure™, A CRH company, will showcase its industry-leading water and wastewater treatment solutions at WEFTEC 2026 in Booths 7425, 7839, and 5938.
Video Documents Cyclor® Turbo Full-Scale Demonstration Site in East St. Paul, MB
In a new video recorded onsite at East St. Paul, MB, discover what happened when a Canadian bedroom community went looking for a solution to their aging SBR infrastructure and capacity issues. The six-minute video goes on to show why a full-scale demonstration site...