Industrial Pretreatment Program

Significant Industrial Users
Loudoun Water's Industrial Pretreatment Program utilizes Chapter 1068 of the Loudoun County Codified Ordinance. The ordinance covers pretreatment; to remove materials determined by the EPA and/or Loudoun Water to have harmful effects on the wastewater collection system, wastewater reclamation facility (WRF) operations, receiving stream of the WRF, or WRF residuals program. Typical substances controlled by this program include toxic organic compounds, metals, extreme pH, and cyanide. Industries identified through this program as Significant Industrial Users (SIUs) are issued a wastewater discharge permit, which contains monitoring requirements. This program does not address sewer pipe blockages caused by grease buildup.

Questionnaire Form 101 – This form is used to identify and track industries that may be SIUs. Loudoun Water will require the questionnaire to be completed by the industry in question; preferably, prior to construction or installation of the facilities. Loudoun Water's pretreatment coordinator will review the completed form and determine if the industry is an SIU. Additionally, Loudoun Water may identify an existing business or industry that might be a SIU. These customers will also be required to complete Form 101.