NYS Certified Backflow Tester

(516) 308-3166

What is a Backflow Preventer?

A backflow preventer is a device installed on your water service to let water flow in and stop contaminants from flowing back out to the city’s water supply.  If your property houses potential health hazards, you need a backflow preventer on every water service by law.  

Our top of the line Test kits, are certified portable testing devices made for testing all RPZ (reduced pressure zone) back flow prevention assemblies, DCVA (double check valve assemblies) and PVB valve assemblies


About Us

We Test, Install, Repair, all types of backflow prevention systems 

Residential and Commercial

We serve all of Nassau County, NY

Please CALL for discounts and Specials


Water District Companies

Jercicho Water District

125 Convent Road

Syosset, New York 11791

Phone: (516) 921-8280

Fax: (516) 921-7554

Plainview water District

10 Manetto Hill Road, P.O. Box 9113

Plainview, New York 11803

Phone: (516) 931-6469

Fax: (516) 931-8683

Web Address:

Bethpage Water District

25 Adams Avenue

Bethpage, New York 11714

Phone: (516) 931-0093

Fax: (516) 931-0068

Web Address:

Massapequa Water District

84 Grand Avenue

Massapequa, New York 11758

Phone: (516) 798-5266

Fax: (516) 798-0279

Web Address:

New York American Water

 60 Brooklyn Ave

 Merrick, NY 11566

Phone: (877) 426-6999

Web Address:

Manhasset-Lakeville Water District

170 East Shore Road – P.O Box 359

Great Neck, New York 11023

Phone: (516) 466-4416

Fax: (516) 466-2748

Web Address:

Contact Us

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Free Estimates

Performing your required annual test Safely

Northshore Backflow Testing

34 Linwood Place Massapequa Park, NY 11762

(516) 308-3166