Ewing-Lawrence Sewerage Authority

600 Whitehead Road, Lawrenceville, NJ 08648 Mercer County
Phone: 609-587-4061 • Fax: 609-890-1902
Email: elsa1@rcn.com
Business Hours: Monday-Friday, 8am-4:30pm

24 hours/day, 7 days/week

Welcome to the Ewing-Lawrence Sewerage Authority Website

S.Robert Filler, Executive Director

Mission Statement

The Ewing-Lawrence Sewerage Authority (ELSA) will protect public health and the environment by the effective treatment and disposal of wastewater while operating in a fiscally responsible manner.

ELSA Treatment Works

The Ewing-Lawrence Sewage Authority (ELSA) operates a sixteen-million gallon per day advanced secondary wastewater treatment facility in Lawrenceville, New Jersey. This facility serves the townships of Ewing and Lawrence, New Jersey.


Visit our Frequently Asked Questions page to get information about billing, service activation, and more.


Notice-Sewage lines-2023

Notice-sewer line...

Notice-Trucks exceeding 11,000lbs 2023

Notice for Trucks over...

Notice-Generators re-bid 2023

Click to view/download...

Read More

Authority Board Meetings

Read More