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Posted on: October 25, 2023

‘Maintenance’ Defined in Loudoun’s Onsite Sewage Treatment System Ordinance

Photo of onsite sewage system with text about an amendment to the ordinance that defines maintenance

During its October 11, 2023, public hearing, the Board of Supervisors amended the Loudoun County Codified Ordinances related to the “maintenance” of onsite sewage treatment systems.

An amendment to Chapter 1066.01 (Onsite Sewage Treatment Systems) adds a definition for “maintenance” that serves to identify sewage treatment system components which, when replaced, will require a permit issued by the Loudoun County Health Department. The change is effective immediately.

The change follows the department’s recent transition from administration by the Commonwealth of Virginia to the county. The department’s Environmental Health Division has identified parts of the ordinance that require amendments because of the transition, including those that govern onsite sewage treatment systems.

Previously, the Loudoun County Codified Ordinances did not reference “maintenance;” repair or replacement of certain components of an existing onsite sewage treatment system were subject to Virginia Department of Health requirements and procedures. This amendment defines “maintenance,” which in turn identifies what components do, or do not, require a permit to replace. The authority for the amendment is found in the Code of Virginia, Chapter 6 – Environmental Health Services, Article 1. Sewage Disposal

More information about the change is available in the October 11, 2023, staff report: Proposed Amendments to the Codified Ordinances of Loudoun County, Chapter 1066 – Onsite Sewage Treatment Systems (PDF).

More information about the Loudoun County Health Department’s environmental services is posted online at

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