** Please note, our offices will be closed from Friday, December 24 until Monday, January 3. **

Alternative Wastewater Treatment Systems for Long Island

Bridgewater Environmental Services is a one-stop-shop for onsite commercial and residential, nitrogen reducing wastewater treatment systems (I/A OWTS). We take care of every step in the septic upgrade process, from applying for government grants through installation.

Installation of an innovative/advanced wastewater treatment system

What We Do

Bridgewater Environmental Services is your one-stop-shop for innovative and alternative on-site wastewater treatment systems (I/A OWTS) in Suffolk County

We offer the following services, all while assuring you pay as little as possible out of pocket for your septic and cesspool replacement project.
Installation of an innovative/advanced wastewater treatment system

The Process



Free Consultation

No commitments, no obligations, just information!

Project Funding

Project Funding

We make sure you receive every grant and rebate dollar you're eligible for.

Design & Permitting

A solution that works for you without the red tape or the headaches.

Installation Services


Highly qualified professionals that get your project done on time.

Consultations are 100% FREE with no commitments!


Solutions for

Designers & Contractors

We provide expediting, government & homeowner relations, and business origination services for our preferred partner network of architects, engineers, surveyors, soil testers, perc testers, system providers, and installers. Let us help you focus on your core business while we take care of the red tape!

Engineer onsite at innovative advanced septic system installation project

news & resources


$15M in New Funding Available to Upgrade Septic Systems in Suffolk County

Governor Cuomo announced an additional $15 million in funding for the State Septic System Replacement Program. The program provides grants to upgrade septic systems across the state (Suffolk County residents…

The Cost of Upgrading a Septic System

Septic treatment systems last, on average, 20 to 30 years. Most modern systems last at least 25 years. The septic system includes both the tank, where solids remain, and the…

How Does an Advanced Septic System Work?

Advanced septic systems are meant to help protect the environment by preventing pollutants from entering the ground and water table. They are also meant to protect people and animals from…


News & Tips

I/A OWTS Help and Resources


Satisfied Customer


(07 Review)

Bridgewater Environmental helped us through the process of installing a new I/A OWTS that cost us nothing out of pocket!


The Bridgewater Environmental Services team is uniquely qualified to manage your sanitary improvement project. Our team brings decades of experience in environmental compliance, tech and automation, environmental land use, septic, grant & rebate handling, and installation to make sure your project is a success. Whether because of mandates, system failure, or environmental altruism, upgrading your sanitary system is the single largest positive environmental impact you can have on Long Island’s waterways.