Ryan Bushman Chemical & Backflow PreventionPresentation Transcript
Chemical and Backflow Prevention Ryan Bushman – Inman Interwest Michael Moss – Division of Drinking Water Utah Nursery & Landscape Association January, 2010
Protect the drinking water supply!
Backflow - The undesirable reversal of flow of water or mixtures of water and other liquids, gasses or other substances into the drinking water system. Occurs due to a pressure differential between two points within a continuous fluid system.
Cross Connection - Any actual or potential connection between the drinking water system and any other source or system through which it is possible to introduce into the system any used water, industrial fluid, gas or substance other than the intended potable water.
Contaminate – Any substance introduced into a drinking water system which creates a threat to public health.
Pollutant – Any substance introduced into a drinking water system which does NOT create a threat to public health, but adversely and unreasonably affects the aesthetic quality of the water.
Degree of Hazard – The threat to public health from a contaminate (health) or pollutant (non-health) introduced by a cross connection into the drinking water system.
Available Plumbing Codes
ICC - International Plumbing Code
IAPMO - Uniform Plumbing code
BOCA National Plumbing Code
NAPHCC National Standard Plumbing Code
ANSI A40 National Plumbing Code
State Written Plumbing Code
Utah Plumbing Code
State of Utah has adopted the 2006 International Plumbing Code (IPC).
The State of Utah has 64 amendments to the current IPC.
The 2009 IPC requires Legislative Action and approval before adoption. This may not be in effect until July 1, 2010.
Lack of Knowledge
Councils and Boards
Your own personnel
Connections for Irrigation System Water
Secondary or irrigation supply only
Culinary or drinking water supply only
Combination of the secondary/irrigation water during the normal season with drinking water connected for early and late season irrigation
Secondary Irrigation Water Only
No protection is required when the source is separate from and NOT connected or able to be connected to drinking water.
Drinking Water Only
The adopted plumbing code, Section 608-16-5 REQUIRES that the lawn irrigation system be protected against backflow by an atmospheric vacuum breaker , a pressure vacuum breaker assembly or a reduced pressure principle backflow prevention assembly .
Secondary Irrigation Water Supplemented with Drinking Water
Separate supply risers
Culinary line will be protected by a reduced pressure backflow preventer
Swing joint connected to irrigation line
Connected to either pressurized irrigation OR culinary, but not both at the same time
SPRINKLING SYSTEM PRESSURE IRRIGATION WATER RP SWING JOINT CONNECTION CITY WATER
SPOOL CONNECTION SYSTEM
Dual Irrigation Connections Swing Connection Irrigation Water Source Drinking Water Source
CODE COMPLIANT BACKFLOW PREVENTION ASSEMBLY VALVE BOX The Utah plumbing code, Section 608-16-5, REQUIRES where ‘chemicals’ are introduced into the system, the water supply shall be protected against backflow by a reduced pressure principle backflow prevention assembly. CHEMICAL FEEDER