Company lists · Data refreshed September 2026
Top 25 Biosolids processors based in the United States
RevenueBase identified 487 biosolids processors headquartered in the United States as of September 2026 and tracks 6,112 professional contacts across them, including 2,280 with verified work emails. Houston is the largest hub.
This list covers biosolids processors headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest biosolids processors based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 546 contacts → | ||||
Indirect evidence “Synagro Technologies, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 319 contacts → | ||||
Indirect evidence “We’re on a mission to replenish the earth by unlocking the value of unconsumed organic materials, transforming them into sustainable solutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 295 contacts → | ||||
Indirect evidence “Protecting the environment with innovative wastewater treatment solutions for over 35 years, Infiltrator is the leading manufacturer of onsite wastewater treatment products in…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 254 contacts → | ||||
Indirect evidence “Valicor is a trusted partner for sustainable waste management solutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 205 contacts → | ||||
Indirect evidence “Stage 3 Separation is North America’s leading service provider for fluid conservation, solids control and waste mitigation.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 155 contacts → | ||||
Partial evidence “Sedron® is a leading provider of circular waste management technologies for agricultural manure and municipal biosolids upcycling, deploying facilities across several North…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 128 contacts → | ||||
Indirect evidence “Kayden Industries was founded in 1995 in Calgary, Canada; with the goal of leading innovation in the solids control industry through the use of centrifuge technology.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 126 contacts → | ||||
Indirect evidence “JWC Environmental, a Sulzer Company, is a global leader in solids reduction, separation and removal systems for customers in a broad range of municipal and industrial applications.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 102 contacts → | ||||
Indirect evidence “Centrisys, a leading US manufacturer, specializes in dewatering centrifuges, sludge thickeners, and low-temperature belt dryers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 96 contacts → | ||||
Indirect evidence “Nacelle is a gas conditioning and processing company serving two distinct markets: biogas and oil and gas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 82 contacts → | ||||
Indirect evidence “Generate Upcycle is a global leader in circular waste management, and the largest owner and operator of food waste-based organics recycling facilities in North America.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 73 contacts → | ||||
Indirect evidence “Rexius is in its ninth decade of recycling and processing organic waste and wood residual materials for the landscape, agricultural, and environmental industries.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 70 contacts → | ||||
Indirect evidence “Sierra International Machinery is a worldwide leader in selling and supporting of processing equipment to the metal, recycling, and waste industries.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 69 contacts → | ||||
Indirect evidence “ReEnergy Holdings LLC owns and operates eight facilities that use forest-derived woody biomass and other waste residues to produce renewable energy.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 66 contacts → | ||||
Indirect evidence “McGill Environmental Systems is a pioneer and industry leader in the composting industry, transforming organic waste material into soil enrichment products.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 63 contacts → | ||||
Indirect evidence “Since 1982, Merrell Bros, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 63 contacts → | ||||
Indirect evidence “Silver Creek Materials is a mining and composting operation in West Fort Worth, Texas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 62 contacts → | ||||
Indirect evidence “We specialize in solutions that transform waste materials into valuable end products like colored landscape mulch, animal bedding, compost, and more.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 61 contacts → | ||||
Indirect evidence “RRT is a nationally recognized leading engineering and construction company building solid waste processing and recycling facilities, power generation plants, waste-to-energy…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 58 contacts → | ||||
Indirect evidence “BCR Environmental Corporation is a U.S.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 55 contacts → | ||||
Indirect evidence “Austin Wood Recycling (AWR) has rooted itself in service since 1987, cultivating a family-owned atmosphere in the pursuit of responsible stewardship of the land.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 53 contacts → | ||||
Indirect evidence “Every time you flush the toilet, your waste goes on a journey most don’t think about.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 47 contacts → | ||||
Indirect evidence “From the main to the drain, Southwaste is a full-service liquid waste management company that specializes in the collection and processing of brown grease, grit, septage, and more.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 46 contacts → | ||||
Indirect evidence “Solid waste contractor specializing in all phases of landfill gas services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 43 contacts → | ||||
Indirect evidence “For over four decades, Garick has been a trusted name in distributing and processing renewable natural resource products across the U.S.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: biosolids processors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names biosolids processors.
- Partial evidence
- Its own public description names part of biosolids processors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name biosolids processors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 487 biosolids processors based in the United States
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Biosolids processors based in the United States at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 487 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among biosolids processors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “biosolids processors”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names biosolids processors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among biosolids processors, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,280 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names biosolids processors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many biosolids processors are there based in the United States?
RevenueBase identified 487 biosolids processors headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Synagro, headquartered in Baltimore, tops this list with the largest team on record.
Which city has the most biosolids processors?
Houston leads with 5 headquartered companies, followed by Pittsburgh (5) and Cleveland (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,280 verified decision-maker contacts tracked across these 487 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.