From Montauk to Manhattan, Mermaid has You Covered

Contact Us

Feel free to contact GNS/Mermaid with any questions you have, whether it pertain to servicing your current system, your interest in installing a water treatment system, or employment opportunities.

Phone & Fax

Our phone number is:
(631) 298-4278
Our fax number is:
(631) 298-3873

Hours

Our normal business hours are:
MONDAY thru FRIDAY
from 8:00AM to 4:00PM

Location

We are located at:
8700 Main Road
Mattituck, NY 11952
Click below for directions


Get Directions

Email

For a sales inquery, fill out the Contact Form to the left.

For other inquiries, you may contact us at info@gnsmermaid.com

Mailing

Our mailing address is:
P.O. Box 859
Mattituck, NY 11952

Emergencies

If you have an emergency (i.e. a leak) with your water treatment system, you may call our 24/7 Emergency Service Line at:
631-831-8473

Service Hours

Our normal service hours are:
MONDAY thru FRIDAY from 7:30AM to 3:30PM

Water Testing

For water testing inquiries, contact our sister company
Harry Goldman Water Testing at 631-298-4640