What Synagro Technologies does

Synagro Technologies, Inc. is a private environmental services company headquartered in Baltimore, Maryland that provides biosolids management and resource recovery services to municipal water and wastewater utilities, industrial residuals generators, and agricultural end-markets across the United States and Canada. Founded in 1986 and owned since December 2020 by Goldman Sachs West Street Infrastructure Partners III (acquired from EQT Infrastructure), the company operates 30+ facilities, employs 1,100+ people, and manages 16+ million tons of biosolids, organics, and residuals annually for 1,000+ customers.

Its core technology stack spans alkaline stabilization, dewatering, composting, thermal drying and pelletization, land application, and thermal conversion, with newer pilots targeting PFAS destruction (CharTech pyrolysis at Baltimore) and carbon-negative electricity generation from biosolids (Sedron's Varcor technology at the planned Indiantown, Florida facility). Notable physical assets include the world's largest indirect dryer at the Back River facility in Baltimore. The company also sells finished product brands — AllGro compost, Granulite fertilizer pellets, mulch, soil conditioners, and topsoil — to growers and crop consultants, and in May 2024 launched SynaPure, a proprietary water and wastewater treatment system that extends Synagro beyond biosolids into adjacent clean water services.

Synagro earns revenue primarily through long-term (typically 10+ year) municipal service contracts delivered via direct enterprise field sales, including Design-Build-Operate (DBO) and Design-Build-Own-Operate (DBOO) structures; secondary streams include residuals management for industrial customers (food and beverage, pulp and paper), product sales of compost and fertilizer, and a national rail logistics business (EPIC) for biosolids transportation. The company pursues a programmatic bolt-on M&A strategy — NEFCO (2023), Liberty Composting (2022), LimeCorp (2022), Burch Hydro (2023), Denali Water (asset transfer, 2024), Dahm Enterprises (2025), and Nutri-Blend (2025) — and has established strategic technology partnerships with Sedron (Varcor) and Firefly Green Fuels (sustainable aviation fuel) to extend the business into energy and circular-economy adjacencies.

Name

Synagro Technologies

Legal name

Synagro Technologies, Inc.

Website

http://www.synagro.com

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Synagro Technologies is a private, Baltimore-based environmental services firm that manages biosolids, organics, and residuals for municipal water utilities, industrial generators, and agricultural end-markets across North America, operating 30+ treatment facilities under long-term contracts.

Ownership category

akta.pro rank

Product category

Biosolids and Residuals Management Services

NAICS

Remediation and Other Waste Management Services (5629), Fertilizer and Compost Manufacturing (32531), Compost Manufacturing (325315)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Composting & Co-Composting (Biosolids + Green Waste) (EUANAHAF)

akta.pro secondary industries

Digestate Processing, Nutrient Recovery & Fertilizer Products (Struvite, Ammonia, Compost) (EUAAAEAL), Biofuel Co-products & Byproduct Processing (DDGS, Glycerin, CO2, Lignin) (EUAAAHAJ)

Keywords

• Biosolids management services
• Wastewater residuals treatment
• Organic recycling solutions
• Water and wastewater treatment
• Renewable energy from waste

Headquarters

HQ city

Houston

HQ country

United States

HQ region

North America

Offices29 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Municipal Biosolids Management Services: Long-term contracts with municipalities (typically 10+ years) to manage biosolids through various treatment processes including drying, composting, land application, and disposal. Revenue from service fees under public-private partnerships.
2. Product Sales (Compost and Fertilizer): Sale of processed biosolids products including AllGro compost, Granulite fertilizer pellets, mulch, soil conditioners, and topsoil to agricultural growers, landscapers, and municipalities.
3. Professional Services: Services including dewatering, digester cleaning, dredging, centrifuge repair, transportation (EPIC rail transportation), and consulting for industrial and municipal customers.
4. Biosolids Processing for Energy: Transforming biosolids into renewable energy including carbon-negative electricity through partnerships with technology providers and energy companies like Lehigh Cement.

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels8 records

Core offering

Synagro Technologies provides end-to-end biosolids, organics and residuals management services to municipal and industrial water and wastewater generators across North America. Its services span collection, treatment (thermal drying, composting, alkaline stabilization, dewatering, land application), facility design-build-operate and design-build-own-operate delivery, renewable energy recovery, emergency response, and rail transportation, with secondary sales of finished products such as AllGro compost, Granulite fertilizer pellets, mulch and topsoil.

Product overview

Synagro Technologies is North America's leading provider of sustainable solutions for biosolids, organics and residuals. The company operates as a comprehensive environmental services provider offering a suite of services including biosolids management (Alkaline Stabilization, Dewatering, Land Application, Thermal Drying and Pelletization, Composting, Digester Cleaning, Transportation), facility operations (Design-Build-Operate, Dredging, Centrifuge Repair), and finished products (AllGro® Compost, Granulite® fertilizer, Fertilizer pellets, Mulch, Soil conditioners, Topsoil). The company also launched SynaPure™ Water and Wastewater Treatment System in 2024 as part of its sustainable growth plan. Core offerings include TurnKey™ Emergency Biosolids Handling Services and EPIC rail transportation. The company manages over 16 million tons of biosolids, organics and residuals annually, with more than 80% transformed into beneficial use.

Differentiator

Problem solved

Functional benefit

Brands

• SynaPure: Water and wastewater treatment system launched by Synagro in May 2024.
• TurnKey
• AllGro
• Granulite

Products and services

• TurnKey Emergency Biosolids Handling Services Rapid-response emergency biosolids handling services for compromised municipal wastewater treatment plants and natural disasters, providing on-call processing, transportation and remediation capabilities under the TurnKey trademark.
• SynaPure Water and Wastewater Treatment System Proprietary water and wastewater treatment system launched in May 2024 for advanced water purification applications, extending Synagro's capabilities from biosolids residuals into clean water treatment for municipal and industrial customers.
• AllGro Compost Registered-trademark compost product that improves soil health, sequesters carbon and helps protect ground and surface water quality, marketed to agricultural, horticultural, landscaping and restoration programs.
• Granulite Fertilizer Registered-trademark fertilizer product derived from biosolids, used in agricultural land application to reduce reliance on chemical fertilizers and provide slow-release nutrients.
• Alkaline Stabilization Biosolids treatment service using alkaline stabilization processes to render residuals stable and suitable for beneficial reuse.
• Dewatering Dewatering services that reduce liquid biosolids volume to enable downstream processing, transport and beneficial reuse.
• Heat-Drying and Pelletization Thermal drying and pelletization of biosolids into a renewable fuel source and fertilizer pellets, including operations at Synagro's flagship Baltimore Back River facility with the world's largest indirect dryer.
• Composting Composting services for biosolids and organic residuals, producing AllGro compost and related soil amendments for agricultural, landscaping and restoration customers.
• Land Application Biosolids and residuals land-application services that recycle treated material as agricultural soil amendment under regulated nutrient management plans.
• Design-Build-Operate and Design-Build-Own-Operate (DBO/DBOO) Facility Delivery Comprehensive Design-Build-Operate and Design-Build-Own-Operate project delivery for municipal biosolids processing facilities under long-term public-private partnerships.
• Transportation Services (EPIC) National rail transportation services for biosolids logistics through the Environmental Protection & Improvement Company (EPIC) subsidiary, alongside truck-based transportation services for residuals movement.
• Biosolids-Derived Soil Amendment Products (Composts, Fertilizer Pellets, Mulch, Soil Conditioners, Topsoil) Suite of biosolids- and organics-derived soil amendment products marketed to agricultural growers, landscapers and crop consultants: composts that replenish organic matter, slow-release fertilizer pellets, organic mulch for moisture and weed control, soil conditioners for turf and ornamentals, and topsoil blends for high-organic-matter planting.
• Renewable Energy from Biosolids Service offering that converts biosolids into renewable energy, including supply of dried biosolids pellets used as alternative fuel by industrial customers such as Lehigh Cement.

Quantifiable outcome

• 2+ million metric tons of CO2e avoided annually through beneficial use of residuals
• +9 more outcomes

Named customers20 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Seven partnerships are on record, tiered core, minor and flagship.

• Martin County, FloridacoreStrategic or Co-development Partner · 17 March 2026Martin County became first Florida municipality to commit biosolids to Indiantown Upcycling Facility through 10-year contract approved by Board of County Commissioners on January 6, 2026. Provides county access to advanced waste-to-resource technology without capital investment.
• UC Irvine (Prado Dam Sediment Study)minorStrategic or Co-development Partner · 9 March 2026Synagro participated in UCI-led study examining feasibility of using trains to transport sediment from Prado Dam Basin to Southern California beaches. Synagro is one of multiple private rail companies involved in the four-month feasibility study.
• SedroncoreTechnology or Integration · 24 February 2026Strategic partnership to develop biosolids upcycling facility in Indiantown, Florida using Sedron's patented Varcor technology. Synagro will supply biosolids from Florida municipalities to transform waste into carbon-negative electricity. Facility expected to create 30 local jobs, process 200,000 tons/year, and produce electricity for 2,000 homes. Construction begins 2026, operations start 2028.
• CharTech SolutionscoreTechnology or Integration · 6 May 2025Partnership for commercial-scale pyrolysis pilot for PFAS destruction at Baltimore facility. High-temperature pyrolysis will process thermally dried biosolids to destroy PFAS contaminants while recovering syngas and producing biochar. Testing advanced waste-to-resource technology.
• Baltimore City Department of Public WorkscoreStrategic or Co-development Partner · 6 May 2025Partnership to test commercial-scale pyrolysis pilot for PFAS destruction, syngas recovery and biochar production. Baltimore City provides access to municipal biosolids stream for testing new destruction technology.
• Denali WaterminorStrategic or Co-development Partner · 22 August 2024Mutually beneficial asset transfer agreement closed August 2024. Transaction delivers sustainable growth and better service for respective customers while advancing Synagro's circular-economy business model.
• Firefly Green FuelsflagshipStrategic or Co-development Partner · 23 July 2024Alliance to unlock sustainable aviation fuel (SAF) production from biosolids in North America. Firefly's innovative fuel production pathway scales across the US leveraging Synagro's position as North America's market-leading biosolids provider. Partnership announced July 2024.

Scale indicators17 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Veolia North America: Operates municipal water, wastewater and biosolids management services across the U.S. through its regulated and environmental solutions divisions. Direct overlap with Synagro in biosolids hauling, treatment, and beneficial reuse, but Veolia is a much larger diversified environmental services incumbent.
• Covanta Holding Corporation: Owner-operator of energy-from-waste facilities serving municipal solid waste customers. Comparable to Synagro in turning waste streams into power and managing long-term municipal contracts, though Covanta focuses on MSW rather than biosolids; Synagro director Linda Fisher also serves on Covanta's board.
• Casella Waste Systems: Regional solid waste, recycling and resource management operator in the Northeast U.S. Overlaps with Synagro on organics processing and landfill diversion, including biosolids-derived compost at its organics facilities, though biosolids is not its core line.
• Republic Services: One of the largest U.S. environmental services providers with organics processing and recycling operations that intersect Synagro's compost/fertilizer product line. Significant scale advantage and recurring municipal relationships similar to Synagro's GTM.
• Stericycle: Regulated waste management and shredding services company serving healthcare and industrial customers. Adjacent to Synagro in environmental services compliance and regulated waste handling, though Stericycle's regulated waste focus is a different end-market.
• Suez Water Technologies & Solutions: Global water treatment and process solutions business with municipal and industrial customer overlap. Synagro's SynaPure launch in 2024 and the hiring of executives from SUEZ (Mudit Gangal, Eric Gernath on the board) point to a converging competitive set as Synagro moves into advanced water treatment.

Direct peers

• Wheelabrator Technologies: Waste-to-energy operator that also processes residuals and biosolids. Comparable to Synagro in converting waste streams into energy and managing municipal residuals contracts; Mark Weidman (Synagro board director) was formerly Wheelabrator's CEO, evidencing close sector overlap.

Emerging players

• Sedron Technologies: Owner of patented Varcor waste-to-product technology (10x less energy than conventional methods) that Synagro has partnered with for the Indiantown facility. Ara Partners invested up to $500M in Sedron to scale Varcor; technology overlap and partnership with Synagro make it a tightly coupled emerging peer.
• Harvest Power: Organic waste recycler that turns food waste and biosolids into compost, soil products, and renewable energy. Synagro director Mark Weidman was previously Harvest Power's CEO. Operates at smaller scale than Synagro in the same circular-economy/nutrient recovery niche.
• Bio-Nomic Services: Mid-Atlantic biosolids management and dewatering services company serving municipal wastewater utilities. Directly comparable to Synagro in biosolids transportation, land application, and lagoon services but at a meaningfully smaller scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC1Xny18c3gMC0qHB3azED-A
• LinkedInlinkedin.com/company/95690
• Xx.com/SYNAGRO
• Facebookfacebook.com/synagro

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles17 records

Subsidiaries8 records

Funding overview

Funding rounds

Investors

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

M&A12 records

Investments

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

Frequently asked questions about Synagro Technologies