An electrical contractor has filed an antitrust lawsuit in a U.S. court against major PVC pipe manufacturers, including Westlake, Atkore, Otter Tail, and JM Eagle. The lawsuit accuses these companies of conspiring to overcharge municipal and commercial buyers by sharing sensitive data with the industry publication OPIS to coordinate pricing. This alleged price-fixing scheme is claimed to be a violation of U.S. antitrust laws.