FOR IMMEDIATE RELEASE Contact: Diane McClintock Exhibit 99.1 Chief Financial Officer email:investorrelations@wattswater.com WATTS WATER TECHNOLOGIES REPORTS RECORD FIRST QUARTER 2026 RESULTS Note changes in performance are relative to first quarter 2025 North Andover, Mass., May 6, 2026 -- Watts Water Technologies, Inc. (NYSE: WTS) – through its subsidiaries, one of the world's leading manufacturers and providers of plumbing, heating and water quality products and solutions – today announced results for the ...