Biosolids Market Size, Share, Growth, Trends, and Global Industry Analysis: By Class (Class A, Class B, EQ), By Form (Liquid, Cakes and Pellet), By Application (Agriculture, Reclamation Sites, Lawns and Home Gardens, Energy Production, Others) and Region Forecast 2021-2032

Biosolids Market size was valued at US$ 4.0 billion in 2025 and is expected to reach US$ 5.4 billion by 2032, growing at a significant CAGR of 4.5% from 2026-2032. Biosolids are a product of the wastewater treatment process. During wastewater treatment the liquids are separated from the solids. Those solids are then treated physically and chemically to produce a semisolid, nutrient-rich product known as biosolids. They comprise macronutrients, including nitrogen, phosphorus, potassium, and sulphur, and micronutrients, such as copper, zinc, calcium, magnesium, iron, boron, molybdenum, and manganese which utilized as a soil conditioner and fertilizer to improve and maintain soil productivity and stimulate plant growth. One of the primary market drivers is the increased usage of biosolids as a substitute for hazardous chemical fertilizers. The industry has also contributed significantly to energy production by using the product as a fuel to generate heat. The increased demand for alternative energy sources to comply with environmental regulations is likely to boost the market during the forecast period.

Furthermore, the increased number of parks, gardens in public and commercial locations is expected to drive the market. Furthermore, the expanding trend of self-gardening due to improved lifestyles and the growing desire to maintain the aesthetics of outdoor spaces presents significant growth potential for industry leaders. Moreover, leading businesses are investing heavily in research and development (R&D) projects to innovate existing solutions, which is projected to boost market growth in the years ahead.

However, the high investment and operating costs associated with wastewater or sludge processing to produce the product are projected to harm the biosolids market in the coming years. Furthermore, restricted technical advancements are expected to impede market growth throughout the projection period.

Key Developments:

• On March 19, 2024, Viridi, a leading renewable natural gas (RNG) platform, has announced the acquisition of a legacy biosolids digester plant in Brunswick, Maine, with intentions to convert it into an industry-leading waste-to-RNG facility. The facility would generate vital renewable energy and assist power the local community, provide a sustainable and cost-effective biosolids management solution, and facilitate compliance with local regulations targeted at reducing per- and polyfluoroalkyl substance (PFAS) contamination in the region.
• On January 3, 2023, A subsidiary of Synagro Technologies, Inc., North America's leading provider of biosolids and residuals solutions services, announced that it has acquired substantially all the assets of Burch Hydro, Inc., an Ohio-based premier provider of biosolids and lime-residuals management and land-application services that specializes in digester cleaning and dewatering services for over 20 municipal customers.