Inspecting & Disinfecting Cooling Towers


The Department of Health and Mental Hygiene (DOHMH) Commissioner’s order requires building owners to hire environmental consultants with demonstrated experience performing disinfection using current industry standard protocols including the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE), Standard 188P, and Cooling Technology Institute Guidelines WTB-148.

Disinfection requires the use of biocides, which requires commercial pesticide applicator certification in Category 7G – Cooling Towers, Pulp & Paper Process issued by the NYS Department of Environmental Conservation (NYS DEC).

Current information on all registered pesticide businesses in Category 7G (Cooling Towers) can be found on the New York State Department of Environmental Conservation (NYS DEC) web site through the Pesticide Business/Agency icon. Options to narrow search include by category (7G- Cooling Towers) and by location (Region 2 for New York City).

If an evaluation or test indicates microbial levels signifying a maintenance deficiency that requires mitigation, building owners are responsible for notifying DOHMH, cleaning and disinfecting the tower in accordance with Local Law 77 of 2015.



DISCLAIMER: This list is not exhaustive, nor has the City vetted the qualifications of the Vendor. You are encouraged to inquire as to the Vendor’s prior experience in environmental remediation, licenses, permit, customer references, and any and all matters of concern to you as a building owner.

Acqua Treat Ltd.
Phone: (516) 775-1030

Barclay Water Management

Phone: (617) 599-9442 (24/7)
Visit the website

Cascade Water Services, Inc.

Phone: (800) 247-3973 (24/7)
Visit the website

Chem Aqua

Phone: (800) 631-0990  x305
Visit the website

Chem Treat

Phone: (215) 962-2844 or (800) 424-9300 (24/7)
Visit the website

Clarity Water Technology LLC

Phone: (845) 589-0580 or (201) 697-8097 (24/7)
Visit the website


Phone: (718) 361-6666 (24/7)
Visit the website

Envirex Pest Control & Protection Inc.

Phone: (212) 249-9605

Gotham Chemical a/d/b/a Gotham Technologies, Inc.

Phone: (203) 854-6644 or (800) 468-4261 (24/7)
Visit the website

Gotham Refining Chemical Corp.

Phone: (718) 267-6900
Visit the website

Johnnie Bowie

Phone: (718) 654-0227

The Metro Group Inc.

Phone: (718) 729-7200
Visit the website

Nalco Company

Phone: (212) 768-7494
Visit the website

OCS Chemical Engineering

Phone: (914) 739-2676
Visit the website

Predator Pest Control

Phone: (516) 319-7401
Visit the website

Rochester Midland Corporation

Phone: (516) 383-8034
Visit the website

Sentry Water Management Corporation

Phone: (973) 616-9000 or (973) 495-4233 (24/7)
Visit the website

Tower Water Management

Phone: (732) 249-0990
Visit the website

U.S. Water

Phone: (866) 663-7633 or (973) 358-4250 (24/7) or (516) 368-1526 (24/7)
Visit the website

Wesco Technologies, Inc.

Phone: (718) 786-1110
Visit the website

If you suspect fraud or deceptive business practices related to the provision of inspection, sampling, cleaning and/or disinfection services, you may file a complaint with the New York State Office of the Attorney General.

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