Need a septic inspection in New Castle County, DE? New Castle County has about 588,093 residents (2024 estimate) and 13 incorporated cities and towns. Describe your project once: certified septic inspectors who work in New Castle County get back to you.
Septic permits and records for New Castle County are usually kept by the county health department.
Services available in New Castle County
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Septic inspection for a home sale
Inspection of the tank and drain field during a sale, with the report requested by the buyer, the lender or the county.
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Septic inspection for a problem
Inspection to find the cause of backups, odors or a soggy drain field, with camera or dye tests if needed.
Frequently asked questions in New Castle County
Do certified septic inspectors cover the whole of New Castle County?
Most pros work across the county and neighboring counties. Enter your ZIP code in the form and we match you with pros who serve your exact area.
Septic Inspection in Delaware: all counties
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.