Advanced Drainage Systems (NYSE:WMS) announced Monday that it has completed its acquisition of National Diversified Sales (NDS) from Germany’s NORMA Group.
The all-cash transaction was valued at approximately $1 billion, a figure that adjusts to roughly $875 million when accounting for the present value of expected tax benefits.
The deal marks a major milestone in CEO Scott Barbour’s "Allied Products" growth strategy, shifting ADS further away from its traditional pipe-manufacturing roots toward a comprehensive water management platform.
By absorbing NDS, ADS gains a dominant portfolio in residential stormwater solutions, irrigation, and flow management—categories where NDS currently holds the top brand position in the Americas.
The integration adds residential-specific products like access boxes and landscape drainage to ADS's existing infrastructure and commercial offerings.
Financially, the acquisition is expected to be immediately accretive to adjusted earnings per share (EPS) within the first year.
NDS generated approximately $313 million in revenue during the twelve months ended June 2025, with a healthy adjusted EBITDA margin.
ADS plans to leverage its vast distribution network—the largest company-owned fleet in the industry—to scale NDS products across its 38 distribution centers and 63 manufacturing plants.