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Flow Information

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Flow Information

The Authority currently has over 56 meters installed throughout its service area in order to determine the flow  contribution from each municipal member.  These meters measures at least 75% of the flow from each of our member municipalities. 

The Authority has initiated a Flow Meter Quality Control Program to insure that the data we receive from each meter is accurate.  Our Maintenance Committee reviews the flow data annually to insure it's accuracy.

The Authority has gathered a significant amount of information concerning our flows.  Here are links to some of that information.

Gallons from each municipality (pdf file) ........................................[click here]

Graph showing flows from each municipality broken down by flow meters:

[2009 to 2014]   [2013]   [2014]   [2017]   [2018-2019]   [2022]

The table below shows the amount of flows handled by CDCA in million gallons of flow per day. 

Since 1984, the Authority has transported for treatment an average of 10.99 million gallons per day.           

That is about 4,011,000,000 gallons during the average year!

Year Million Gallons per Day
1984 9.53
1985 7.38
1986 11.32
1987 13.00
1988 12.01
1989 14.54
1990 13.81
1991 13.67
1992 11.77
1993 14.10
1994 14.78
1995 11.83
1996 15.81
1997 11.38
1998 8.89
1999 8.89
2000 9.32
2001 9.34
2002 8.49
2003 12.44
2004 12.67
2005 10.84
2006 10.41
2007 10.33
2008 8.83
2009 10.02
2010 10.16
2011 11.27
2012 9.18
2013 10.28
2014 10.86
2015 9.48
2016 8.84
2017 8.60
2018 11.10
2019 10.83
2020 9.99
2021 10.35
2022 10.20
Average (since 1984) 10.93
Maximum  (1996) 15.81
Minimum   (1985) 7.38

Private Property Infiltration and Inflow

What are we talking about?

Over 85% of the Authority's budget is for the treatment of our municipal member's flows.  Unfortunately, our flows are significantly impacted by rainfall.  Rain water soaks through the ground and into the sewers through cracks or bad connections.  Each municipal member and the Authority are constantly working to find and repairs these leaks into the sewer system. 

A significant amount of extraneous flow enters the sewer system through the pipe that connects each home to the sewer in the street.  This is called a house lateral and is the property of the home owner.  These pipes are rarely inspected or repaired.  Consequently a significant number of them are in disrepair.  Rainwater and groundwater that should soak into the ground are allowed to enter the sewer system.  Once in the public sewer system, the rainwater and groundwater undergoes unneeded treatment which everyone pays for in their sewer bill.

In June of 2010, a report on private property infiltration & inflow was issued by Delcora.  The Delcora report on private property I&I is available for downloading by clicking on the link below.  (The file is 5 MB in size.)  In addition, a companion video was also produced.  The video is posted on "Youtube" and can be seen by using the link below.

The Water Environment Federation (WEF) maintains a "Private Property Virtual Library" on its website. This is a growing library of case studies from private property-related programs at wastewater utilities. It is intended to be a resource for other utilities seeking information or advice about private property programs. You can find it at the link below.

Private Property House Lateral Inspection YouTube video  exit this site

Delcora's Private Property Report 

Delcora's Private Property Video  exit this site

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