Release Details

ISELIN, N.J., July 14, 2026 -- Middlesex Water Company (Middlesex) (NASDAQ: MSEX) has released its 2025 Annual Water Quality Reports for customers served by Middlesex Water Company, Tidewater Utilities and Pinelands Water Company, as well as for New Jersey water systems the Company operates under contract, including the Borough of Avalon, the Borough of Highland Park and the City of Perth Amboy. The reports provide customers with detailed information about the quality, safety and reliability of their drinking water and demonstrate compliance with all applicable federal and state drinking water standards.

Effective April 1, 2026, Pinelands Water Company was consolidated into Middlesex Water Company. Beginning with the 2026 Annual Water Quality Reports, customers previously served by Pinelands Water Company will receive reports under the Middlesex Water Company–Southampton name, reflecting the integration of operations while continuing the same commitment to safe, reliable water service.

Customers can access their system-specific Water Quality Report at: https://www.middlesexwater.com/water-quality/ or via the company specific links found in their water bills.

The reports provide important information about local drinking water sources, water quality testing conducted throughout 2025, regulatory compliance and the Company's ongoing efforts to protect public health and maintain high standards of water quality.

"Providing safe, reliable, high-quality drinking water remains our highest priority," said Nadine Leslie, Chair, President and Chief Executive Officer of Middlesex Water Company. "Our teams work every day to ensure the water delivered to homes and businesses meets or exceeds state and federal standards through rigorous testing, proactive infrastructure investments and continuous system improvements. We encourage customers to review their annual Water Quality Report to learn more about the water they depend on every day."

Across its service territories, Middlesex Water Company continues to invest in programs that strengthen water infrastructure and improve service reliability. Through its Water for Tomorrow® initiative and annual RENEW Program, the Company is modernizing water systems by replacing aging water mains, valves and hydrants, while enhancing resiliency to support current and future community needs.

The Company is also advancing its Knocking Out Lead program, working directly with customers to identify and replace lead and galvanized steel service lines at no direct cost to property owners or tenants, further supporting public health and safety.

About Middlesex Water Company

Middlesex Water Company (“Middlesex”) is one of the nation’s premier investor-owned water and wastewater utilities. Established in 1897, Middlesex is a trusted provider of life-sustaining services to more than half a million people in New Jersey and Delaware. The company focuses on employee engagement, operational excellence, superior customer experience, investment in infrastructure, and selective and sustainable growth to deliver value to our customers, investors, and the communities we serve.

Media Contact:
Summer DeFEO, Director of Communications
sdefeo@middlesexwater.com
(732) 638-7510