Service Levels

Lower Lateral Overflow Rate

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.

Target: 8.7*

• Calendar year 2009 = 8.7 SSO's per 100 miles (2% less than 2008 yearly average)
• Calendar year 2010 = 8.5 SSO's per 100 miles (2% less than 2009 target)
• Calendar year 2011 = 8.4 SSO's per 100 miles (2% less than 2010 target)
• Calendar year 2012 = 8.2 SSO's per 100 miles (2% less than 2011 target)
• Calendar year 2013 = 8.0 SSO's per 100 miles (2% less than 2012 target)
• Calendar year 2014 = 7.9 SSO's per 100 miles (2% less than 2013 target)
• Calendar year 2015 = 7.7 SSO's per 100 miles (2% less than 2014 target)
• Calendar year 2016 = 7.6 SSO's per 100 miles (2% less than 2015 target)
• Calendar year 2017 = 7.4 SSO's per 100 miles (2% less than 2016 target)
• Calendar year 2013 = 7.3 SSO's per 100 miles (2% less than 2017 target)

*The new target level was approved by the Board of Directors and was effective on July 1, 2009.