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News & Announcements

Posted on: May 5, 2023

Legionella Mitigation, Updates, and Information for May 5

May 5, 2023

TWW's management team, led by Acting Director Sean Semple, continues to advance with the New Jersey Department of Environmental Protection under a Unilateral Administrative Order (October 12, 2022) the following highlighted operational and capital endeavors:


  • Low-Velocity Water Main Flushing Program: TWW has completed three weeks of low-velocity flushing at fire hydrants in targeted areas throughout the service area. These efforts will continue into the summer months to optimize chlorine residuals which help mitigate pathogens' growth, including Legionella. These efforts include opening fire hydrants, sometimes for extended periods, and sampling until the area receives optimal chlorine residuals. By conducting these efforts, TWW will be able to identify areas requiring permanent flushing devices. 
  • Pennington Avenue Reservoir: Recently, Trenton City Council approved a resolution for TWW to engage a consultant to assist in developing a comprehensive plan to strengthen the management of the 100-million-gallon asset. Also, scientists from Princeton Hydro, a Trenton-based engineering firm, conducted various tests from a small deployed boat, work that will help us improve water quality.
  • Residential Shutoffs Temporarily Suspended: We have temporarily suspended residential service interruptions for unpaid bills to allow customers struggling with payment challenges to access utility assistance programs, such as the Low-Income Household Water Assistance Program (LIHWAP). This pause does not apply to commercial or business accounts. Questions? Visit or call 2-1-1. See the news release we issued on May 4 in Adobe Portable Document Format.
  • TWW Communications: TWW's LIHWAP direct mail piece to our nearly 63,000 valued customers drops during the week of April 30. We distributed thousands of LIHWAP pamphlets to various requestors. And we are preparing to raise awareness of reducing Legionella risks using direct mail and print advertising.

Capital Projects

  • Storage and Distribution Improvements: TWW is advancing a minimum two-year project to build two 8-million-gallon storage tanks at 942 Prospect Street. We will demolish the existing buildings once we have cleaned up the site, removing any debris and hazardous material. We are targeting next spring, 2024, to begin constructing the concrete tanks, and we will execute a communications plan to keep residents informed about the project's progress and goals.

Questions? Call TWW's Office of Communications and Community Relations at (609) 989-3033, Monday to Friday, 8:30 a.m. to 4:30 p.m. TWW is closed on federal and municipal holidays.

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