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Posted on: April 28, 2023

TWW's Low-Velocity Water Main Flushing Program Is Underway

April 28, 2023 

TWW's Low-Velocity Water Main Flushing Program Is Underway


Earlier this week, TWW started flushing water mains at a low velocity using specialized equipment throughout its water distribution system, a months-long program intended to raise chlorine in parts of the TWW system to mitigate conditions that promote the growth of pathogens, including Legionella. We will allow fire hydrants to flow for extended periods for sample taking, and equipment used by TWW personnel may remain in place overnight with signage. During the program period, service-area residents may notice a chlorine smell, which is normal.


  • Robocalling Residents About TWW's Low-Velocity Water Main Flushing: TWW used its Reverse 911 system, TWW-Connects, to notify customers and service-area residents signed up to receive system messaging about the low-velocity water main flushing. TWW will deploy another Robocall at noon on Saturday, April 29, and we will process requests for removal from the system within 72 hours. TWW uses the state contract vendor ONSOLVE CodeRED for Reverse 911 system services.


  • Robocalling Our Customers About Help To Pay Waters Bills: TWW used its Robocall system on April 23 to convey a message about the availability of the Low-Income Household Water Assistance Program (LIHWAP) and a current temporary pause on residential service disconnections, but not commercial accounts. Residents can sign up for TWW-Connects alerts by clicking here.



Useful Links


Click here to see and download an Adobe PDF of the public notice we issued on April 1.


Click here to see and download a Legionella FAQ Sheet


Click here to see and download a Legionella and Legionnaires' Disease Q&A Sheet


TWW customers and service-area residents can learn more about Legionella at the NJDEP's webpage at

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