The Federal biosolids rule for the use or disposal of sewage sludge is contained in 40 CFR Part 503.
The EPA publication entitled A Plain English Guide to the EPA Part 503 Biosolids Rule summarizes this comprehensive rule and was written to help make the Part 503 rule more understandable. While the guide is not a substitute for the actual rule, it is consistent with the content of the Part 503 rule and can be a helpful tool for the rule’s interpretation and implementation.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
- A Plain English Guide to the EPA Part 503 Biosolids Rule (PDF)(183 pp, 37 MB, September 1994, EPA 832-R-93-003)