Operators based within 12 miles of Irwin

Listed by where the business is, not by who it says it serves. Every operator here was on the SCDES Onsite Wastewater Contractors list on the date its record shows, and the address it is placed by comes from that same list, so this is a checkable claim rather than a service-area promise. A South Carolina licence is issued by the state, not by a county, so operators further out can work here too; these are simply the ones closest to you.

Showing the 30 nearest of 32 operators based within 12 miles. The rest are on the county page.

Soil and septic suitability around Irwin

The USDA has already rated this ground for exactly one use: a septic tank absorption field. Within 4 miles of Irwin — 32,002 acres across 85 soil map units — it rates 50.3% of the land very limited for that use and 47.2% somewhat limited, and almost none with no limitation at all.

• Very limited · 50.3%
• Somewhat limited · 47.2%
• Not rated · 2.6%

What the limitation actually is

A rating on its own tells you nothing you can act on. The reasons do, and around Irwin the leading one is slope on 29.7% of the mapped area, followed by depth to bedrock on 19.9%. In full:

Shares overlap: most soils here are limited for more than one reason at once, so these do not sum to 97.5%.

The soils themselves

The named soils and land types that make up most of the ground around Irwin. Georgeville alone accounts for 19.4% of it.

“None in profile” means SSURGO records no bedrock or other restrictive layer within the depth it describes, not that none exists.

Area of interest: a 4-mile radius around the USGS Geographic Names centre point for Irwin (GNIS 2402622, 34.6939, -80.8223), chosen because five of this state's communities are unincorporated and have no boundary to use, and because the lots that need a septic permit are in the ring around a town rather than inside it. Soil from USDA-NRCS Soil Data Access, SSURGO interpretation “ENG - Septic Tank Absorption Fields”, area-weighted by mapped acreage and by each component's share of its map unit. Survey areas: Chester County, South Carolina (2025-08-29), Lancaster County, South Carolina (2025-08-29). Retrieved 2026-09-18.

This is a survey, not an evaluation of your lot. The permit decision rests on the site evaluation SCDES carries out for the specific parcel.

By service

• Septic Tank Pumping in Irwin
• Septic System Repair in Irwin
• Septic Installation in Irwin

Permitting in Lancaster County

Septic permitting in Lancaster County is handled by the State of South Carolina, through the Department of Environmental Services, not by the county. See the Lancaster County detail →