What Environmental Services does

Environmental Services, Inc. (ESI) is a privately held, full-service environmental contractor founded in 1991 and headquartered in South Windsor, Connecticut. The company provides turnkey hazardous waste management, emergency spill response (24/7), storage tank cleaning, asbestos abatement, facility decontamination, demolition, and site remediation services to commercial, industrial, institutional, municipal, and government customers across the lower New England region. ESI is permitted as a hazardous waste transporter in seven states (CT, MA, NH, NY, PA, RI, VT) and operates a State of CT / EPA Part B 10-day transfer and storage facility on a 19-acre parcel with capacity for up to 800 drums of RCRA, TSCA, and medical waste. The company self-identifies as the largest privately held environmental services firm in Connecticut.

The platform is built around a specialized physical asset base — super vac trucks for solids/liquids pump-out, excavators and skid steers, frac tanks up to 20,000 gallons, confined-space entry equipment, mobile treatment trailers, and a custom trailer-mounted containment chamber used for after-hours remote opening of hazardous chemical containers. ESI employs over 70 staff including project managers, supervisors, compliance/regulatory personnel, equipment operators, skilled craftsmen, and field technicians holding OSHA hazardous work site operations, hazmat technician, confined space, DOT, and medical surveillance certifications. Two affiliated subsidiaries extend the offering: Liquid Solutions LLC rents frac tanks and pump-and-treat systems for hazardous or regulated liquid storage, and Mitchell Associates, Inc. provides non-environmental complementary services such as roll-offs, portable toilets, demolition, septic pump-out, sub-surface sewage installation, and site development.

Revenue is generated primarily through professional services on a project/contract basis, with quote-based pricing provided on request and a 24/7 emergency response line (1-800-486-SPIL). A secondary revenue stream comes from equipment rentals via Liquid Solutions. The go-to-market is direct-to-customer with no resellers or distributor channels, supported by long-tenured relationships — customer testimonials explicitly reference multi-year exclusivity with an aerospace manufacturer and a police department that relies on ESI as a first call for biohazard and condemned-property emergencies. Marketing is conducted through the company website, direct outreach, and referral-based word-of-mouth; in early 2026 the company began supplementing this with paid digital acquisition via a Google Ads optimization engagement.

Name

Environmental Services

Legal name

Environmental Services, Inc.

Website

https://e-s-i.com

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

51–100 employees

Short description

Environmental Services, Inc. is a privately held Connecticut-based environmental contractor providing hazardous waste management, 24/7 emergency spill response, tank cleaning, asbestos abatement, demolition, and site remediation to commercial, industrial, government, and institutional customers across seven northeastern U.S. states.

Ownership category

akta.pro rank

Product category

Environmental Services

NAICS

Remediation Services (562910), Hazardous Waste Collection (562112), Remediation and Other Waste Management Services (5629)

SIC

Sanitary Services (4950)

akta.pro primary industry

Spill Response & Emergency Environmental Services (Oil/Chemical) (IMAIAGAD)

akta.pro secondary industries

Emergency Response Planning, Training & Spill Readiness Services (ERP, Drills, Standby) (EUAIAMAJ), Environmental Remediation & Site Cleanup (Soil/Groundwater) (IMAIAGAA), Industrial Cleaning & Decontamination (Tank/Vessel/Confined Space) (IMAIAGAE), Emergency Response & Disaster Recovery (Water Intrusion/Mold/Contamination) (BPALALAI), Environmental & Hazardous Materials Management (Remediation/Asbestos/Spill Response) (IMAIAAAJ)

Keywords

• Hazardous waste management
• Environmental remediation services
• Emergency spill response
• Storage tank cleaning
• Asbestos abatement services

Headquarters

HQ city

South Windsor

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. Environmental Services Delivery: Providing turnkey environmental services including emergency response, hazardous waste management, tank cleaning, demolition, and site remediation. Services are provided to commercial, industrial, institutional, municipal customers and government agencies on a project/contract basis.
2. Equipment Rental - Liquid Solutions: Rental of frac tanks ranging from 5,000 gallon sludge boxes to 20,000 gallon frac tanks, along with pump and treat systems. Pricing provided upon request for rental, mobilization, demobilization and cleaning.
3. Non-Environmental Services - Mitchell Associates: Related services including bulky debris roll-offs, demolition services, portable toilet rental, septic pump out and disposal, sub-surface sewage installation, site development, and topsoil, gravel and sand delivery

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels3 records

Core offering

Environmental Services, Inc. (ESI) is a full-service environmental contractor providing turnkey environmental services to commercial, industrial, institutional, municipal, and government customers across lower New England states. Core services include 24/7 emergency response to chemical and oil spills, hazardous waste management and transportation, storage tank cleaning, facility decontamination, asbestos abatement, demolition, and site remediation. The company operates a Part B EPA-permitted transfer and storage facility in South Windsor, CT and supplements its core contracting work through two subsidiaries — Liquid Solutions LLC (frac tank rentals) and Mitchell Associates, Inc. (non-environmental services such as demolition, roll-offs, and site development).

Product overview

Environmental Services, Inc. (ESI) operates as a single unified environmental services platform offering turnkey solutions through three distinct service brands: its core environmental contracting business (ESI) providing hazardous waste management, emergency response, and remediation services; Liquid Solutions LLC offering frac tank rentals for liquid storage and containment; and Mitchell Associates, Inc. providing complementary non-environmental services including demolition and site development. The company serves commercial, industrial, institutional, municipal, and government customers across lower New England states, with a 24/7 emergency response capability.

Differentiator

Problem solved

Functional benefit

Products and services

• ESI Core Environmental Contracting Services Full-service environmental contracting delivering 24/7 emergency response to chemical and oil spills, hazardous waste management and transportation, storage tank cleaning, facility decontamination, asbestos abatement, demolition, and site remediation. Targets commercial, industrial, institutional, municipal, and government customers across lower New England states.
• Liquid Solutions LLC Frac Tank & Pump-and-Treat Rentals Rental of totally enclosed frac tanks ranging from 5,000 gallon sludge boxes to 20,000 gallon frac tanks, with self-contained running gear for easy transport, for storing hazardous or regulated liquids in environmental or industrial applications. Pump and treat systems available in conjunction with the frac tanks. Pricing provided upon request for rental, mobilization, demobilization, and cleaning, with 24/7 dispatch.
• Mitchell Associates, Inc. Non-Environmental Services Complementary non-environmental services including bulky debris roll-offs, demolition services, portable toilet rental, septic pump out and disposal, sub-surface sewage installation, site development, and topsoil, gravel, and sand delivery.

Named customers3 records

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• ITS Environmental ServicesminorStrategic or Co-development Partner · 21 January 2026GR Digital Marketing case study detailing collaboration success for ITS Environmental Services, which resulted in expanded reach and lead generation through keyword research, ad creation, Google liaison, and custom code optimization of Google Ads campaigns.

Scale indicators6 records

Recent moves6 records

Expansion highlights3 records

Regional players

• Stericycle Specialty / EQ (Environmental Quality): EQ operates permitted hazardous waste transfer and storage facilities in the Mid-Atlantic and Northeast, providing waste collection, transportation, and disposal services to industrial and institutional customers. Its footprint and service mix directly overlap with ESI's permitted operations across New England and the Mid-Atlantic.

Direct peers

• Heritage Environmental Services: Heritage Environmental Services is one of the largest privately held hazardous waste management and environmental services companies in the US, offering waste collection, treatment, disposal, and emergency response. Like ESI, Heritage operates a large private hazardous waste platform with multi-state permitted operations and is a directly comparable privately held peer.
• Triumvirate Environmental: Triumvirate Environmental is a New England–headquartered provider of hazardous waste management, environmental services, and emergency response to industrial, academic, and healthcare customers. Triumvirate is one of the most directly comparable regional competitors to ESI, with overlapping service lines, customer types, and geographic focus on the Northeast.
• Miller Environmental Services: Miller Environmental Services is a regional provider of environmental services including industrial cleaning, tank cleaning, emergency spill response, and hazardous waste management, with operations across the Northeast and Mid-Atlantic. Its service menu mirrors ESI's, including vac trucks, frac tank rentals, and 24/7 emergency response capability.

Broad incumbents

• Clean Earth (a Harsco subsidiary): Clean Earth is a major US provider of specialty waste handling and disposal services, including hazardous waste, remediation, and industrial cleaning. Its service overlap with ESI spans hazardous waste management, decontamination, and remediation services, though at a larger national scale.
• US Ecology (now part of Republic Services): US Ecology was a leading provider of hazardous waste management and industrial services, with a network of permitted treatment, storage, and disposal facilities across North America. It overlaps directly with ESI's hazardous waste transportation, Part B transfer/storage, and disposal routing activities, though at materially larger scale.
• Stericycle: Stericycle is a major US provider of regulated waste services, including hazardous and medical waste management. ESI holds a Connecticut biomedical waste transporter permit; Stericycle is the dominant scaled player in regulated waste streams ESI touches, though Stericycle focuses more on route-based medical waste and less on industrial emergency response.
• Republic Services: Republic Services is the second-largest waste services company in the US with operations spanning hazardous waste, remediation, and environmental services after its US Ecology acquisition. It is a broad incumbent adjacent to ESI's narrower industrial/emergency response focus, and competes for the same regulated disposal and industrial services RFPs.
• Clean Harbors: Clean Harbors is North America's largest provider of environmental and industrial services, including hazardous waste management, emergency spill response, and industrial cleaning. ESI operates in a tightly overlapping set of service lines at a regional scale; Clean Harbors is the dominant national incumbent ESI competes against or partners with on larger projects.
• Veolia Environmental Services North America: Veolia operates one of the largest hazardous waste management networks in North America, offering collection, treatment, recycling, and disposal across dozens of permitted facilities. ESI competes with the Veolia network for hazardous waste disposal routing and participates in the same regulated disposal value chain.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Environmental Services