Parkins Mills Wastewater Treatment Plant
Frederick Water operates the Parkins Mills Wastewater Treatment Plant under a contract with the Frederick-Winchester Service Authority. It serves the areas east and north of Stephens City. The area in the vicinity of the City of Winchester is served by the Opequon Water Reclamation Facility.
Crooked Run Wastewater Treatment Plant
The Crooked Run Wastewater Treatment Plant opened in 2007. The plant has a permitted capacity of 0.250 MGD expandable to 0.626 MGD ultimate design. The treatment plant provides wastewater treatment to the Shenandoah Community.