A sanitary sewer overflow is an overflow of untreated wastewater from a wastewater collection system that reaches, or has the potential of reaching, state waterways, such as Fountain Creek, in Colorado Springs. An overflow can be caused by vandalism, tree roots, pipeline settling/failure, grease/debris blockages and severe storm events. Each overflow site is cleaned through recovery of pooled liquids, physical removal of residues and debris, and flushing the area with potable water. Local health officials are immediately notified so they can provide additional public health protection guidance when necessary. Downstream water users, such as irrigation companies, are also notified when large overflows occur. | 
