This selection of environmental services companies in New York State includes both large public agencies and established private firms. NYC Department of Environmental Protection manages New York City's water supply and wastewater treatment. Hazen and Sawyer focuses on safe drinking water and water pollution control. SavATree specializes in tree, shrub, and lawn care. Roux provides environmental consulting and engineering services. The companies listed are primarily involved in water management, environmental consulting, and waste services. Many of these firms are headquartered in New York City or its immediate vicinity, indicating a concentration of the sector's operations around the state's largest metropolitan area. This group includes both very large organizations, such as the NYC Department of Environmental Protection with over 3,000 employees, and smaller, more specialized consultancies.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
NYC Department of Environmental Protection (NYC DEP)nyc.gov
This city agency manages New York City's water supply, distributing clean drinking water, treating wastewater, and regulating air quality and pollution |
3,005 | |||
| 2 |
Hazen and Sawyerhazenandsawyer.com
A company focused on providing safe drinking water and controlling water pollution through planning, design, and construction management of water-related projects |
2,261 | |||
| 3 |
NYS Department of Environmental Conservationdec.ny.gov
This company, based in New York State, is dedicated to protecting the environment, wildlife, and public lands while educating the public on conservation |
2,259 | |||
| 4 |
SavATreesavatree.com
A full-service company specializing in green tree, shrub and lawn care, using cutting-edge technology and patented ingredients with a passionate "Green Team" |
1,109 | |||
| 5 |
Rouxrouxinc.com
A client-focused environmental consulting and management firm, providing engineering services for air, water, and land-related environmental issues nationwide |
483 | |||
| 6 | 436 | ||||
| 7 |
Metro Groupmetrogroupinc.com
A trusted source for critical operational and building services, offering expertise in water treatment, mechanical, HVAC, electrical, installation, and maintenance Contact for building solutions |
358 | |||
| 8 |
Ecology and Environment, Inc.wsp.com
A company that was formerly E&E is now WSP USA, offering services in engineering, environmental consulting, and infrastructure development |
325 | |||
| 9 |
NRC National Response Corporation/US Ecologynrcc.com
A global leader in environmental, industrial, and emergency response solutions, offering services such as standby, remediation, marine, equipment rental, training, and consultancy |
316 | |||
| 10 |
Sevenson Environmental Services Inc.sevenson.com
A leading environmental remediation contractor with over 1,500 completed projects, specializing in cleanup of hazardous material contaminated sites and facilities |
309 | |||
| 11 |
Recycle Track Systemsrts.com
Provides digital and service-based waste management solutions enabling companies to track, optimize pickups, and improve recycling with data insights. |
183 | |||
| 12 |
Modern Disposal Services, Inc.moderncorporation.com
A leading provider of Waste and Recycling Management services, committed to environmental education, green practices, and creating strong career opportunities in the community |
181 | |||
| 13 |
GrowNYCgrownyc.org
A non-profit empowering New Yorkers with access to fresh food, green spaces, waste reduction, and environmental education programs since 1970 |
175 | |||
| 14 |
Circular Servicescircularservices.com
Development and operation of circular economy infrastructure providing materials management services to municipalities and businesses, reducing landfill impact nationwide. |
119 | |||
| 15 |
OnePointFive (opf.degree)opf.degree
A climate solutions company offering expertise in Climate Finance, Technology, Training, and Sustainability Services to help businesses grow sustainably |
101 | |||
| 16 |
Waste Harmonicswasteharmonics.com
Outsourced waste management service for companies with multiple locations, reducing costs, simplifying invoicing, and minimizing equipment issues Industry expertise and connections provided |
95 | |||
| 17 |
rePurpose Globalrepurpose.global
A leading Plastic Action Platform engaging brands, consumers, innovators, and policymakers to combat the plastic waste crisis through innovative circular economy solutions |
91 | |||
| 18 |
Aria Filtraariafiltra.com
Aria Filtra™ provides long-lasting water filtration solutions globally, offering high ROI and reduced operating expenses through expertise and best-in-class technology |
83 | |||
| 19 |
WTSwtsonline.com
The company focuses on deploying sustainable solutions and technologies to enhance stakeholder sustainability by reclaiming and cycling by-products and waste |
78 | |||
| 20 |
Green Project Technologiesgreenprojecttech.com
Carbon management software simplifying data collection, processing, and reporting for companies, with API integrations and third-party certification Ideal for portfolio companies and supply chain |
71 | |||
| 21 |
CurbWastecurbwaste.com
A software company built by waste industry experts, dedicated to helping waste haulers succeed and improve community relations through innovative technology |
65 | |||
| 22 | 57 | ||||
| 23 |
MJW Corporation, Inc.mjwcompanies.com
Specialists in radiation protection, health physics, and emergency management services Assisting clients with compliance, protection, measurement, and control of radiological hazards |
56 | |||
| 24 |
Urban Green Councilurbangreencouncil.org
The company focuses on decarbonizing buildings for healthy and resilient communities by improving energy and resource management to combat climate change |
40 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 25 |
Live Building Systemslanding.livebuildings.com
Central hub for utility management, offering real-time data aggregation, digital billing, expert insights, and on-site support for water, fuel, and electric usage optimization |
35 | |||
| 26 |
Carleton Energy Consultingcarletonec.com
Specializing in Local Law 87 & 84 compliance, energy conservation, and efficiency solutions for real estate firms in New York City |
31 | |||
| 27 |
Thomas Pest Services, Inc.thomaspestservices.com
This company offers relationship-based pest management services including general pest control, rodent control, mosquito & tick control, termite services, and wildlife removal in the Capital Region and Hudson Valley |
24 | |||
| 28 |
Aztech Environmental Technologieslabellapc.com
A company specializing in environmental engineering services, including drilling, excavation, and remedial design and construction, recently acquired Aztech Environmental Technologies |
21 | |||
| 29 |
Branch Restoration Inc.branchrestorationinc.com
Full service disaster restoration and environmental services company specializing in property damage restoration, remediation, and reconstruction |
20 | |||
| 30 |
Lawrence Env, LLC - 212-682-2001lgenv.com
This company provides environmental consulting services to help real estate clients assess, comply with, and correct environmental factors affecting their properties |
16 | |||
| 31 |
Advanced Pest Management Services, Incadvancedexterminating.com
Providing pest control solutions in NY Boroughs and Long Island, specializing in termite control and bed bug elimination for homes and businesses |
16 | |||
| 32 |
Silicon Solarsiliconsolar.com
A family-run business providing high-quality and affordable solar solutions worldwide, with a mission to build a sustainable future through innovative technologies and education |
14 | |||
| 33 |
The Cotocon Groupthecotocongroup.com
Specializing in energy engineering for buildings, we provide expertise in creating green, sustainable structures through renovation or new construction |
13 | |||
| 34 |
Green Earth Pest Control, Inc.greenearthpest.com
A trusted pest control company in NYC and LA, offering green and organic removal services for insects and rodents, prioritizing environmental impact |
11 | |||
| 35 | 
Tenen Environmentaltenen-env.com
Environmental engineering, geology, hydrogeology, and regulatory compliance solutions tailored to New York metropolitan area projects, with expertise in assessments, investigations, and remediation oversight |
11 | |||
| 36 |
Global Energy Efficiencygeehco.com
The company helps businesses save money with energy efficiency solutions, preparing for non-renewable energy depletion and combating climate change for future generations |
10 | |||
| 37 |
URN LLC
This company offers consulting and remediation services specifically focused on addressing offshore oil spills |
9 | |||
| 38 |
Sustain.Life (now part of Workiva)workiva.com
A SaaS platform and Certified B Corporation™ specialized in helping companies reduce their carbon footprint and promote sustainability initiatives |
8 | |||
| 39 |
swrmgreenswrm.com
This company specializes in calculating and reducing carbon emissions for businesses to promote sustainability, profitability, and customer loyalty |
6 | |||
| 40 |
COLONY PEST MANAGEMENT INC.colonypestmanagement.com
A family-owned pest management company with over 40 years of experience, offering environmentally conscious and cost-effective pest control solutions |
6 | |||
| 41 |
Greenlife Solutionsgreenlifesolutionsny.com
Greenlife Solutions offers high-quality services focusing on energy efficiency for businesses and residences through insulation, LED lighting, and solar panel installations |
6 | |||
| 42 |
Fosterra, LLCfosterra.com
The company focuses on accelerating sustainable practices worldwide, specializing in clean energy projects, GHG reduction programs, and climate action planning |
6 | |||
| 43 |
THE LOTIS ENGINEERING GROUP, PCthelotisgroup.com
Environmental consulting firm providing high-quality, personalized services across the US, Canada, and the Caribbean Specializing in assessments, regulatory compliance, and remedial solutions |
5 | |||
| 44 |
Cotton 7 Global Enterprisescot7globalenterprises
The company focuses on providing innovative clean technology solutions to address environmental, infrastructure, and security concerns worldwide, while promoting economic prosperity and environmental protection |
5 | |||
| 45 |
Bright Energy Servicesbrightenergyservices.com
This company specializes in energy, HVAC, and lighting audits to reduce carbon footprints, improve building efficiency, and maximize savings through incentive programs |
5 | |||
| 46 |
EHS Risk Managementehs-riskmanagement.com
This consulting firm specializes in driving business value through Environmental Health and Safety (EHS) risk management services |
4 | |||
| 47 |
ITS Environmental Services, Inc.itsenvironmentalservices.com
A full-service restoration and cleaning company for commercial and residential properties, specializing in mitigation, bioremediation, and disinfection services |
2 | |||
| 48 |
Revolt Energy LLCrevoltagen.com
A full-service energy efficiency solutions company specializing in strategic building upgrades to reduce utility consumption, energy costs, and carbon emissions |
2 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 14, 2026.
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