Case Histories of Selected Backflow Incidents

Florida Department of Environmental Protection

Type Date Location Source(s)

Agriculture Premises Jun 1983 Woodsboro, Maryland 2, 3, 4

Beverage Bottling Plant Dec 1987 Spokane, Washington 2

Car Wash Facility Feb 1979 Seattle, Washington 1, 2, 3, 4

Chemical Plant Oct 1986 Lacey's Chapel, Alabama 2, 3, 4

Clinic Nov 1993 Wilson, North Carolina 2, 5

Dairy Sep 1979 Porland, Oregon 2

Dental Office Nov 1990 Kansas 2

Filming Location - Special Effects Oct 1994 Los Angeles, California 2

Film Laboratory Oct 1978 U.S. Navy ship at sea 2, 4

Fire Protection System Jun 1979 Meridian, Idaho 1, 2

Gas Storage Facility Aug 1982 Connecticut 2, 3, 4

Gas Tank Maintenance Facility Mar 1989 Fordyce, Arkansas 2

Hospital/Autopsy Facility Dec 1964 Michigan 2

Industrial Facility - Chemical used to Process May 1988 Edgewater, Florida 2

Industrial Facility - Process Water System 1992 Edmonton, Alberta, Canada 2

Laboratory Oct 1989 Edmonton, Alberta, Canada 2

Mortuary ? ? 3

Packing House Oct 1979 Marshalltown, Iowa 2, 4

Paper Product Plant Nov 1987 Burnaby, British Columbia, Canada 2

Pest Control Company Jun 1987 Fair Lawn and Hawthorne, New Jersey 2, 4, 6

Plating Plant Jun 1987 Kitchener, Ontario, Canada 2

Poultry Farm Jun 1991 Cass, Arkansas 2, 4

Premises Where Consumer's Potable Water System Supplies a Cooling System Jul 1989 Cincinnati, Ohio 2

Premises Where Consumer's Potable Water System Supplies a Heat Exchanger Feb 1984 Riverbend, Oregon 2

Premises Where Consumer's Potable Water System Supplies a Irrigation Piping System Oct 1991 Southgate, Michigan 2, 4, 7

Premises Where Consumer's Potable Water System Supplies a Space Heating Hot-Water Boiler Jan 1990 Brighton, Colorado 2, 4

Premises with an Auxiliary Water System Jul 1993 Coos Bay, Oregon 2

Premises with a Reclaimed Water System Sep 1996 Hillsborough County, Florida 9

Refinery May 1979 Winnepeg, Manitoba, Canada 1

Shipyard Jan 1981 Norfolk, Virginia 2, 3, 4

Temporary Water Loading Station Nov 1976 Wenatchee, Washington 1, 2, 8

Tire Retreading Plant Mar 1988 Eugene, Oregon 2

Veterinary Office Jun 1983 Calgary, Alberta, Canada 1

Wastewater Treatment Plant Dec 1983 San Antonio, Texas 1

Winery Dec 1970 Cincinnati, Ohio 2

Sources:

1 - AWWA, Recommended Practice for Backflow Prevention and Cross-Connection Control, AWWA Manual M14, Second Edition, 1990
2 - Pacific Northwest Section of the American Water Works Association, Summary of Backflow Incidents, Fourth Edition, 1995
3 - U.S. Environmental Protection Agency, Cross-Connection Control Manual, 1989
4 - Watts Industries, Inc.; Watts Regulator News/Stop Backflow
5 - Drinking Water & Backflow Prevention, Volume 11 Number 2 (February 1994)
6 - Drinking Water & Backflow Prevention, Volume 5 Number 3 (March 1988 1994)
7 - Drinking Water & Backflow Prevention, Volume 9 Number 6 (June 1992)
8 - American Water Works Association, Opflow, May 1977
9 - Hillsborough County Water Department
10/26/1997 rev. 2/09/2007

Type	Date	Location	Source(s)
Agriculture Premises	Jun 1983	Woodsboro, Maryland	2, 3, 4
Beverage Bottling Plant	Dec 1987	Spokane, Washington	2
Car Wash Facility	Feb 1979	Seattle, Washington	1, 2, 3, 4
Chemical Plant	Oct 1986	Lacey's Chapel, Alabama	2, 3, 4
Clinic	Nov 1993	Wilson, North Carolina	2, 5
Dairy	Sep 1979	Porland, Oregon	2
Dental Office	Nov 1990	Kansas	2
Filming Location - Special Effects	Oct 1994	Los Angeles, California	2
Film Laboratory	Oct 1978	U.S. Navy ship at sea	2, 4
Fire Protection System	Jun 1979	Meridian, Idaho	1, 2
Gas Storage Facility	Aug 1982	Connecticut	2, 3, 4
Gas Tank Maintenance Facility	Mar 1989	Fordyce, Arkansas	2
Hospital/Autopsy Facility	Dec 1964	Michigan	2
Industrial Facility - Chemical used to Process	May 1988	Edgewater, Florida	2
Industrial Facility - Process Water System	1992	Edmonton, Alberta, Canada	2
Laboratory	Oct 1989	Edmonton, Alberta, Canada	2
Mortuary	?	?	3
Packing House	Oct 1979	Marshalltown, Iowa	2, 4
Paper Product Plant	Nov 1987	Burnaby, British Columbia, Canada	2
Pest Control Company	Jun 1987	Fair Lawn and Hawthorne, New Jersey	2, 4, 6
Plating Plant	Jun 1987	Kitchener, Ontario, Canada	2
Poultry Farm	Jun 1991	Cass, Arkansas	2, 4
Premises Where Consumer's Potable Water System Supplies a Cooling System	Jul 1989	Cincinnati, Ohio	2
Premises Where Consumer's Potable Water System Supplies a Heat Exchanger	Feb 1984	Riverbend, Oregon	2
Premises Where Consumer's Potable Water System Supplies a Irrigation Piping System	Oct 1991	Southgate, Michigan	2, 4, 7
Premises Where Consumer's Potable Water System Supplies a Space Heating Hot-Water Boiler	Jan 1990	Brighton, Colorado	2, 4
Premises with an Auxiliary Water System	Jul 1993	Coos Bay, Oregon	2
Premises with a Reclaimed Water System	Sep 1996	Hillsborough County, Florida	9
Refinery	May 1979	Winnepeg, Manitoba, Canada	1
Shipyard	Jan 1981	Norfolk, Virginia	2, 3, 4
Temporary Water Loading Station	Nov 1976	Wenatchee, Washington	1, 2, 8
Tire Retreading Plant	Mar 1988	Eugene, Oregon	2
Veterinary Office	Jun 1983	Calgary, Alberta, Canada	1
Wastewater Treatment Plant	Dec 1983	San Antonio, Texas	1
Winery	Dec 1970	Cincinnati, Ohio	2