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Indiana Biosolids

 

State Data

Confidence in data for this state:

MODERATE

2018 data unless noted.

IN chart@2x.png

Click chart to download.

Definitions

Terms used on this website and in data sets are defined & discussed here.

Injection of liquid biosolids from the Richmond, IN WRRF increase corn, oats, & soybean yields. Photo used with permission, courtesy Richmond Sanitary District.

Injection of liquid biosolids from the Richmond, IN WRRF increase corn, oats, & soybean yields. Photo used with permission, courtesy Richmond Sanitary District.

State Statistics Dashboard

Anaerobic digesters (4 silver circular tanks) make Class B biosolids for land application. Photo used with permission, courtesy Richmond Sanitary District.

Anaerobic digesters (4 silver circular tanks) make Class B biosolids for land application. Photo used with permission, courtesy Richmond Sanitary District.

State Summary

● Indiana biosolids are managed by all three of the major options – about equally. Most of the state’s water resource recovery facilities (WRRFs) land apply biosolids, but many others landfill them. And Indianapolis – the largest city by far – incinerates the solids from its two wastewater facilities. 

●  Many Indiana WRRFs have staff who manage the solids, including making arrangements with farmers for land application, which mostly involves Class B biosolids. But outside contractors are also used for land application and transportation. 

●  There are seven regional biosolids centers (RBCs) that play a large role in recycling to soils the biosolids from many Indiana WRRFs. Merrell Bros. and Wealing Brothers are the largest companies operating RBCs; they recycle tens of thousands of tons of municipal Class B biosolids and industrial wastewater solids to soils every year. 

● The solids from 12 WRRFs are treated to Class A standards.