Free septic system research and data published by Greenville Septic Repairs. No email address required, no registration, no paywall. These pages are kept separate from the service-request side of this site and carry no lead-generation forms.
Every material figure traces to a named source — normally a federal or state primary source, with peer-reviewed research or a clearly labeled secondary source used only where appropriate. Retrieval dates and source citations are included on each page. Published by Greenville Septic Repairs.
Four-record packet: permanent system profile, 16-row homeowner-safe checklist, 24-row professional inspection worksheet, and a 15-column maintenance log. Backed by a 54-row grouped source crosswalk (50 rows cite EPA and/or SCDES; 4 are disclosed editorial additions). Downloadable CSV files included.
View the checklist & log →
A source-verified conventional septic system diagram, a 23-entry component status matrix (core vs. common vs. optional), a 7-system cross-system comparison table, terminology reconciliation (drain field / leach field / soil absorption field), and a label source ledger — all checked against U.S. EPA and SCDES primary material. Diagrams released under CC0 1.0.
View the diagram library →
How many U.S. homes use septic? Reconciled estimates from the 2023 American Housing Survey, USGS 2025 spatial model, and peer-reviewed literature — plus a county-level rollup covering 3,108 counties, with South Carolina and Greenville County detail.
Read the statistics →
State-by-state minimum septic tank capacity by bedroom count, compiled from each state’s own onsite-wastewater regulation. Covers all 50 states with per-state citation, design-flow assumptions, provenance codes, and a corrections log. Downloadable CSV and JSON included. (Research preview — under active review)
View the size chart →
The SCDES copy line, every county’s assigned local office and phone number, the seven search identifiers SCDES asks for, FOIA deadlines, and the DHEC-to-SCDES transition explained. Includes a 46-county access index as free downloadable CSV and JSON.
View the permit records guide →
Research published here follows the editorial and source standards policy. Material corrections are recorded in the correction log. This site does not perform septic work. About the publisher.