Water Testing (8)
Common Contaminates (4)

Where are you located?

Our main office can be found at 46950 County Rd 48, Southold NY 11971. 

What types of payments do you accept?

We accept Cash, Checks, and all major credit cards (e.g. Master Card, Visa, and American Express).

Where is your coverage area for water collection?

We collect water in Suffolk County, NY 

What time of day do you collect samples?

Our Water Collectors collect samples in the morning between 9am and 1pm as to ensure our samples make it to the lab within the requried hold time. 

How long should I run the water for a sample?

How long you should run the water depends on the test being performed and the reason for collection. typically we reccomend having the water running before our collector arrives for 15+ minutes. 

How long does it take to get the results?

How quickly you receive your results depends on how comprehensive your test is. Microbiology test results (Bacteria) are typically receieved within 2-3 days from collection.  More comprehensive testing may take around 10 business days for the results. 

Need more answers?

No problem! Feel free to email us at office@goldmanwatertesting.com and we will respond within 1-3 business days.

Are rush options available for results?

Yes! Please call the office to discuss. We offer options from 5 days to 1 day depending on the sample collected. 



Goldman Water Testing collects water samples in Suffolk County, NY. Our specific area of coverage is the East End of Long Island, NY. 



About Us

Goldman Water Testing was founded in the 1960's by Harry Goldman. Originally named Harry Goldman Water Analysis, the business was the "go to" for water testing on Long Island. Harry was an integral part of the establishment of water districts and community water on the east end of Long Island, NY. In 1988 William Gremler purchased the company and ran it alongside his business GNS Contracting. In 1996 John Scarramucci  purchased both business from Gremler and combined them, renaming the businesses Harry Goldman Water Testing and GNS Mermaid.
In 2020 local Olympian Amanda Clark and her husband Gregory Nissen, who is a New York State water operator, took over the business. Today the business is named Goldman Water Testing and continues the legacy of providing prompt and professional water testing services for the east end of Long Island, NY.


Goldman Water Testing focuses on water testing for:

  • Homeowners
  • Real Estate
  • Construction
  • Food Service/Restaurants
  • Shellfish and Fishing Industries
  • Agriculture and Nurseries
  • Manufacturing
  • Housing, Hotels, Motels
  • Golf Courses
  • Schools
  • Hospitals
  • …and many other suppliers of water to the public.


Our tests range from the very specific to the extremely comprehensive. We pride ourselves on excellent and timely customer service. Please call us today to schedule. Check out our coverage area map to see where we collect. 

Goldman Water Testing

Coverage Area

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Goldman Water Testing is the "Go-To" water testing company for Long Island residents and businesses. Located on the east end of Long Island, Goldman Water Testing specializes in water, soil, air & material testing.

Our Services

Goldman Water Testing has you covered for all of your well water and municipal water testing needs. We also test soil, air and materials ! 

Frequently Asked Questions