Synagro is North America’s leader in the safe, reliable, environmentally responsible recycling of biosolids.
Our company began with a small group of passionate environmentalists responsibly partnering with our customers to find recycling and beneficial use for biosolids to comply with new clean water regulations. Along the way, we combined Bio Gro’s portfolio of land application, thermal dryers and composting facilities with Synagro’s experience in land application, thermal reduction and rail movement of biosolids. This combination yielded the only company of its kind, constantly striving to provide more environmentally sound solutions for our customers and the communities we serve and in which we live.
Legislative and Regulatory
Synagro (Combined Entities)
The Clean Water Act passes, removing biosolids from water treatment plant discharges, dramatically increasing the production of biosolids.
Bio Gro is founded to help municipalities find biosolids solutions driven by the passage of The Clean Water Act.
Synagro is founded in Houston, Texas.
Congress enacts the Ocean Dumping Ban Act, including prohibition of at-sea disposal of industrial and medical wastes. The U.S. EPA phases out at-sea dumping of sewage sludge.
Bio Gro has become the leading provider of beneficial use biosolids management services in North America, recycling more than 5 million wet tons of biosolids and other organic by-products annually for over 275 generators across the U.S. and Canada.
Bio Gro joins the Waste Management family as a division of Wheelabrator Water Technologies, Inc. linking Bio Gro’s large land application and biosolids services strength with Wheelabrator’s excellence in in-vessel composting.
Wheelabrator purchases Enviro-Gro Inc., a Baltimore-based company that is a leader in thermal drying technologies for biosolids. The combined entities became the only biosolids management company with a national footprint and industry-leading expertise in biosolids services, composting and thermal drying.
Bio Gro’s biosolids experts work in partnership with the U.S. EPA to craft the landmark Federal “503” regulations, ensuring the environmentally conscious and safe disposal and recycling of biosolids nationwide.
The Standards for the Use or Disposal of Sewage Sludge (40 CFR 503) becomes effective.
Synagro rapidly expands its biosolids management business with the purchase of Rehbein, Inc., giving Synagro a strategic presence in the Midwest, and the biosolids operations of Whiteford Environmental Services, a Maryland-based biosolids services company.
Synagro enters Canada, winning the contract to design, build, own and operate a new thermal drying facility in Hamilton, Ontario. Later wins in operating the Windsor, Ontario dryer (2018) and leading the design, build, ownership and operation of a world-class biosolids drying facility in Victoria, British Columbia, to become operational in 2021 affirms Synagro’s leadership in the Canadian biosolids market.
Synagro experiences a period of aggressive organic growth, and adds to its extensive portfolio with two acquisitions. Adding Old Line Environmental, Inc. bolsters Synagro’s biosolids management footprint in the Mid-Atlantic, and brings more than a dozen employees, each with more than 20 years of biosolids experience.
Synagro acquires Pace Dewatering Systems, an Edmonton, Alberta, Canada supplier of centrifuge technology, expanding its position as North America’s largest and most capable biosolids management company. The acquisition adds 13 centrifuges, a centrifuge-repair unit, and personnel with more than 30 years of biosolids dewatering experience.
Synagro is purchased by West Street Infrastructure Partners III, an infrastructure investment fund managed by Goldman Sachs Merchant Banking division.
Synagro acquires LimeCorp, LTD, an Ohio-based a premier provider of lime-residual management and land-application services for industrial and municipal customers, expanding its lime-residual management and land-application services, and also broadening its client base in the region.