Prince William County, Virginia septic permits and requirements

Permitting authority

Virginia Department of Health — Prince William Health District, Environmental Health On-Site Sewage & Water Services

On-Site Sewage & Water Services: 703-792-6310, option 2; Development Services Building, 5 County Complex Court, Suite 240, Woodbridge, VA 22192.

Virginia permitting framework

Virginia Department of Health regulates onsite sewage disposal through local health districts and works with licensed private-sector Onsite Soil Evaluators and Professional Engineers. The application path depends on whether the project is new construction, a repair, modification, voluntary upgrade, certification request, or review of an existing system. County building and zoning approvals remain separate from the VDH onsite-sewage approval.

Prince William Health District is the local septic permitting and inspection authority

The Health District states that its Onsite Sewage and Water Services program provides permits and inspections for onsite sewage disposal systems throughout Prince William County, Manassas, and Manassas Park. Prince William County’s new-home guidance likewise directs properties that cannot connect to public sewer to obtain a sewage-disposal permit from the Health District.

The same Health District application covers new systems and septic repairs

The district’s current forms page identifies its Sewage Disposal and/or Water Supply Permit Application for construction of a sewage disposal system and for septic-system repair. State rules also generally require properly licensed private-sector supporting work from an Onsite Soil Evaluator or Professional Engineer unless the owner qualifies for limited VDH evaluation/design services.

A zoning approval is required before applying for a perc test

Prince William County states that a Certificate of Zoning Approval to perform a percolation test is required before filing the Health Department application for approval of an individual sewage disposal system. The county’s zoning guidance states a one-acre minimum lot size for a lot not served by public sewer and provides a separate lawful-status review path for qualifying nonconforming lots.

The county publishes septic contractor and service-provider resources

The Health District provides an onsite resources page linking the current fee chart, licensed sewage haulers, Virginia contractor-license resources, DPOR professional-license lookup, and system records. Its forms page also publishes an application for sewage-disposal-system installer contractors.

Routine septic pump-out is required at least every five years

Prince William Health District cites County Code Section 23-48 as requiring onsite sewage systems that do not need a VPDES permit to be pumped at least once every five years. The district publishes a pump-out report by property address so owners can research documented pump-out history.

Certain routine repairs have a defined express-permit path

Prince William Health District publishes an Express Repair Permit process for specified routine repairs and maintenance to conventional and alternative onsite systems. The express process is limited to listed repairs and to onsite sewage installers properly permitted and bonded in Prince William County, so other repairs should follow the standard permit path.

Official sources

SepticScope summarizes public-agency information for planning purposes. The permitting agency's current instructions control if they differ from this guide.

Report outdated county information

Septic rules, forms and agency pages can change. If you find a broken official link or a county requirement that has changed, send SepticScope feedback and include the current local government source.