Septic Systems
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Alternative Onsite Septic Systems
Find county and homeowner requirements, frequently asked questions, and a certified inspector list.
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Alternative Onsite System Maintenance Report
Read the most recent Alternative Onsite System Maintenance Annual Report for Loudoun County.
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Applications
Check out forms and instructions for well and septic install, repair, or abandonment, subdivision, and soil review.
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Chapter 1066
Read the Loudoun County Ordinance Chapter 1066 Onsite Sewage Treatment Systems.
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Contractors / Licensed Lists
Browse the various lists for inspectors, pump and haul contractors, and well drillers and pump installers.
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Fact Sheets
View the various fact sheets on alternative systems, low pressure distribution, septic systems, and well operation and maintenance.
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Onsite Water & Sewage Information
Information about onsite water and sewer systems in Loudoun County is provided on this page.
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Tank Replacement Study (PDF)
A study of onsite sewage tank replacements in Loudoun County, 2000 to 2016
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Tank Requirements
Discover the structural soundness and water tightness requirements of tanks used for on-site sewage systems.