Service Levels

Lower Lateral Overflow Rate

Service Level Definition

Measures the number of sewer overflows originating within the District's system per 100 miles of sewer service lines in any calendar month. This service level involves the number of sewage discharges from the District's service line system, regardless of the volume or whether the sewage enters a waterway. It takes into consideration the fact that a larger system, similarly managed, will experience more overflows than a smaller one.

Service Level Target

• Calendar year 2008 = 5.7 SSO's per 100 miles (15% less than 2007 yearly average)
• Calendar year 2009 = 4.8 SSO's per 100 miles (15% less than 2008 target)
• Calendar year 2010 = 4.4 SSO's per 100 miles (10% less than 2009 target)
• Calendar year 2011 = 3.9 SSO's per 100 miles (10% less than 2010 target)
• Calendar year 2012 = 3.5 SSO's per 100 miles (10% less than 2011 target)