Learn how to maintain your septic system to: Save money, Protect your property value, Keep you and your neighbors healthy, and Protect the environment. You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more. Decentralized Wastewater Treatment Can Be Cost Effective and Economical (PDF)(2 pp, 3 MB) Decentralized Wastewater Treatment Can Protect the Environment, Public Health, and Water Quality (PDF)(2 pp, 2 MB) Decentralized Wastewater Treatment Can Be Green and Sustainable (PDF)(2 pp, 3 MB)