CROSS CONNECTION CONTROL PROGRAM

PURPOSE Required by Section 7584 of Title 17, CCR, to protect water system from actual/potential cross connections Importance: Consumers assume water from the tap is safe Can cause illness and death. Can contaminate even the highest quality water. Contamination may affect a single structure or may involve an entire community.

WHAT IS A CROSS CONNECTION ? Actual/ potential unprotected connections between a potable water system and any source or system containing unapproved water or a substance which is not safe.

Examples of Cross Connections Improperly installed irrigation systems Improperly plumbed water using devices: hot-tubs, boilers or commercial dishwashers Irrigation systems served by an auxiliary source, i.e. private well Interconnections between potable system and a non-potable system

WHAT THE PROGRAM INCLUDES Adoption of Rules/ordinance Conducting the survey Installation of devices Provision of trained person Procedure for testing Maintaining records of locations/tests/repairs

GETTING STARTED Adopt an ordinance or set of rules Important since it establishes the legal authority to carry out the program. Conduct a system survey Abate hazards by installing backflow prevention assemblies at the meter or providing internal cross-connection protection.

THE SURVEY Residential areas Auxiliary water supply (i.e. either a well, pond, spring, or a creek pump) Irrigation systems Private storage tank Swimming pool, hot tub or spa Solar hot water heating panels Graywater systems - Animal troughs Backflow prevention assemblies may not be required if the system is installed in accordance with the UPC.

THE SURVEY Commercial areas – more complex Irrigation systems w/ chemigation/fertilization Fire protection systems Processing plants Waste water treatment Marine facilities

THE SURVEY Commercial areas – cont. System only has control to meter Require BFD at all service connections Health Dept.’s concern is protection of employees/public

THE SURVEY Wastewater and Hazardous Wastes Sewage treatment facility Use of reclaimed water Doctor/Dentist office Aquarium

CROSS CONNECTION CONTROL SURVEY Please take a few moments to fill out this survey. By doing so, you will help to protect your water supply. Mark all boxes that apply to your system.  Yes/No  _____Private well _____Private storage tank or reservoir  _____Irrigation system not installed according to plumbing codes   _____Domestic water served by a different source (i.e. creek, pond, or spring)   _____Irrigation served by a different source (i.e. private well, creek, or pond)   _____Swimming pool, spa or hot tub not installed according to plumbing codes  _____Animal troughs _____Solar hot water heating panels not installed according to plumbing codes  _____Gray water systems  _____Water supplying an ornamental pond _____Any commercial activities that utilize the water system  _____Wastewater treatment facility  _____Plumbing modifications Please describe in detail any boxes checked “yes” (attach additional sheet if necessary):   _______  Name of person completing this report__________________________________ Date__________ Signature _________________________________________________________

Cross-Connection Survey Summary Form Community Water Systems Name of System _______________________________ System Number _______________________ Description of Survey Procedures - How survey was conducted (include copy of survey form): Person conducting survey (List name and qualifications): ______________________________________ _____________________________________________________________________________________ Procedures for Residential Connections: ____________________________________________________ __________________________________________________________________________________________________________________________________________________________________________ Procedures for Commercial Connections:____________________________________________________ _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Total number of service connections ____________ Number of service connections surveyed _________ Number of connections with auxiliary sources (i.e. wells or creek pumps) ___________ Number of connections with other hazards ____________ Total number of backflow prevention devices installed____________ Total number of backflow prevention devices needed____________ Location/Type of Hazard Identified ___________________________________________________________________________________________________ Describe follow-up for service connections which did not respond to the survey: _________________ Long-term (Describe on-going cross-connection protection & testing of backflow prevention assemblies): Submitted by (signature)______________________________________ Date ________________________

Cross-Connection Survey Summary Form Noncommunity Water Systems   Name of System __________________________________________ System Number _________________ Date of Survey ___________________________________________ Name of person performing survey _____________________________________________________________ Qualifications of person performing survey ______________________________________________________ _________________________________________________________________________________________ Description of Survey (Elements of survey, how conducted, hazards identified): ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Actions taken (Include description of corrections made, backflow prevention assemblies installed): ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________________________________________________________________________________ Long-term (Include description of who will ensure ongoing protection of the system from cross-connections and testing of backflow prevention assemblies): ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Other (Include other elements of program): ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Name of person completing this report__________________________________ Date ____________________ Signature _________________________________________________________

TYPES OF DEVICES Air Gap Separation - AG-best protection AG double the distance of supply pipe diameter Minimum 1”

Reduced Pressure Principle Backflow Prevention Device- RPP Install close to meter 12”-36” from ground

Double Check Valve Install close to meter, preferable above grade

PROTECTION REQUIRED Air gaps System used to supplement reclaimed supply Waste water pumping/treatment plant-RP? Reclaimed water used on site – RP? Hazardous substance handled on site – RP? Unapproved auxiliary supply interconnected – RP?

PROTECTION REQUIRED cont. Reduced Pressure Principle Assembly Irrigation systems with chemigation/fertilization Unapproved water supply-not interconnected Pier hydrants for vessels Marine facilities Premises where entry is restricted Premises with repeated history of cross connex.

PROTECTION REQUIRED cont. Double Check Valve Fire system supplied by water system-no auxiliary source Fire system with elevated storage/fire pumps from private reservoir/tank Regulations are in process of being revised

TESTING REQUIRMENTS RPP’s and DC’s Test upon installation Test annually Test must be performed by certified tester