Department of Revenue (DOR)
Public and Community Sewer
Author: Steve Custer
Data Assembly:  Andrea Wright, Daryl Chipman, Luke Lohmuller, Steve Custer, Bob Snyder
(Last modified 16 June 2000: 02 January 2010)

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Example Questions the Database Can Answer

1.  Where are the properties on public sewer systems (DOR)? (4)
2.  Where are the properties on community sewer systems (DOR)? (6)

There are two themes:

1.  Public Sewer (DOR Geocode (4)) shows the location of properties on public sewer identified by utility code 4 for all properties which could be located on the 1995 County Road Book based on address and subdivision block and lot data  from the CAMAS data base maintained by the Department of Revenue.
2.  Community Sewer (DOR Geocode (6)) shows the location of properties on community sewer identified by utility code 6 for all properties which could be located on the 1995 County Road Book based on address and subdivision block and lot data from the Camas data base maintained by the Department of Revenue.

Public and Community Sewer Map

Glossary

Community Sewer:  Several properties served by a  single sewer system.  This data shows properties served by community water, but not the location of the septic system (code 6 on the utility field).

Public Sewer:  Property served by a municipal or public sewer system (code 4 on the utility field).
 

About the Data

All data is projected in UTM NAD83. The data source is Department of Revenue CAMAS data base records of utility.  The DOR personnel indicate that this is not a validated field so errors of classification are possible particularly in the 1970's.  The location of the points was identified using address and/or subdivision block and lot data and the 1995 county road book.  If a point could not be located by this method, the data was not entered.   The data from the CAMAS data base includes a utility field which reflects public (code 4) and community (code 6) sewer connection.  Since this data reflects properties, it should not be used to identify sewer systems, but could be used to estimate locations where a properties are using public or community sewer.  The data was obtained in 1997.  The data was not field checked.  The subdivision block and lot identifications or address locations were used in conjunction with the County Road book for all properties in the Local Water Quality District.  This theme comes from the geocode data base.  In this database, every located geocode has a unique location.  Sometimes a property has a more than one geocode at an address.  Where this occurred, a new point was "spawned" for each duplicate geocode.  The points were spawned 10 m from the original point.  The first is spawned east, the second south, the third west, the fourth north, and the fifth (if present) north east.  In this way, every located geocode has a unique spatial position in the theme.

The definitions for attributes in the geocode attribute table for DOR data are linked  here.