Article XI. Cross Connection
3.05.560 General provisions.

The purpose of this article is to protect the district’s potable water supply against actual or potential cross connections by isolating, within the property, contamination or pollution that may occur because of undiscovered or unauthorized cross connections on the property. The provisions set forth in this article are in accordance with Cal. Code Regs. tits. 17 and 22.

The provisions set forth in this article shall be in addition to and not in lieu of the controls and requirements of other provisions of these regulations or of other regulatory agencies, such as local governmental agencies and local and state health departments but may report same to other appropriated agencies if discovered. The district is not responsible for abatement of cross connections which may exist within the customer’s property.

The district has developed an active cross connection control program with a certified cross connection control program coordinator to administer the program. Any questions or notifications regarding cross connections shall be directed to the coordinator.

The district will evaluate the degree of potential health hazard to the public potable water supply which may be created as a result of conditions proposed on an applicant’s property or existing on a customer’s property. At a minimum, the district’s evaluation shall consider the existence of cross connections; the nature of materials handled on the property; the probability of cross connection occurring; the degree of piping system complexity and the potential for piping system modifications. Special consideration shall be given to the property of the following types of customers:

A. Properties where substances harmful to health are handled under pressure in a manner which could permit their entry into the public water system. This includes chemical or biological process waters and water from public water supplies which have deteriorated in sanitary quality.

B. Properties having an auxiliary water supply such as recycled water or nonpotable water. If the auxiliary water supply is approved for potable use by the public health agency having jurisdiction, cross connection protection is not required.

C. Properties that have internal cross connections that are not abated to the satisfaction of the district and approved by the public health agency.

D. Properties having intricate plumbing and piping arrangements or where not all portions of the property are readily accessible for inspection purposes.

E. Properties having a repeated history of cross connections being established or reestablished.

From time to time, representatives of any public health agency having jurisdiction and/or the district may conduct inspections of any property where domestic water service is provided by the district. The purpose of the inspections would be to determine if any actual or potential cross connections exist. The customer shall provide reasonable cooperation in facilitating such inspections. (Ord. 1399.12 § 11-1, 2017)

3.05.570 Type of protection required.

The type of protection required is related to the degree of hazard that exists on the property served. The type of protective device that may be required (listed in increasing level of protection) includes double check valve (DC), double check detector check assembly (DCDA), reduced pressure principle backflow prevention device (RP) and an air gap separation (AG). The customer may choose a higher level of protection than required by the district. The minimum types required to protect the district’s water system are given in Table 3.05-1 and are in accordance with Cal. Code Regs. tit. 17. Situations not covered in Table 3.05-1 shall be evaluated on a case-by-case basis and the appropriate cross connection protection device shall be determined by the district and/or public health agency.

Table 3.05-1. Minimum Degree of Protection Required

Description

Minimum Type of Protective Device

1. Sewage and Hazardous Substances

a. Property where there are wastewater pumping and/or treatment plants and there is no interconnection with the potable water system.

AG

b. Property where hazardous substances are handled in any manner in which the substance may enter the public water system.

AG

c. Property where there are irrigation systems into which fertilizers, herbicides or pesticides are, or can be, injected.

RP

d. Property where there is a separate meter for the landscape irrigation system.

RP

e. Property where the connection from the public water system supplies water to a swimming pool only.

DC

2. Auxiliary Water Supplies

a. Property where there is an approved or unapproved auxiliary water supply which is interconnected with the public water system.

RP

b. Property where there is an unapproved auxiliary reduced pressure water supply and there is no interconnection with the public water system.

DC

3. Recycled Water

a. Property where recycled water is used, other than in an approved dual plumbed area, and there is no interconnection with the potable water system.

RP

4. Fire Protection Systems

a. Property where the fire system is directly supplied from the public water system and there is an unapproved auxiliary water supply on or to the property (not interconnected).

DC or DCDA

b. Property where the fire system is supplied water from the public water system and interconnected with an unapproved auxiliary water supply.

AG

c. Property where the fire system is supplied from the public water system and where either elevated storage tanks or fire pumps which take suction from a private reservoir or storage tank are used.

DC or DCDA

d. Property where the fire system is supplied from the public water system and where recycled water is used in a separate piping system within the same building.

DC or DCDA

5. Salton Sea Facilities

a. Pier hydrants for supplying water to vessels for any purpose.

RP

b. Property where there are marine facilities.

RP

6. Commercial and Industrial Facilities

a. Beverage bottling plants.

RP

b. Canneries, packing houses and reduction plants.

RP

c. Dairies and cold storage facilities.

RP

d. Film laboratories.

RP

e. Sand and gravel plants.

RP

7. Property or Facilities

a. Car washes.

RP

b. Campgrounds.

RP

c. Guardhouses, restrooms/comfort stations.

DC

d. Laundries (including self-service), dye works, dry cleaners.

RP

e. Pharmacies.

RP

f. Restaurants.

RP

g. Schools and colleges.

RP

h. Restricted access facilities (government buildings).

RP

i. Trailer and mobile home parks with a master meter.

DC

j. Premises with a cooling tower.

RP

8. Oil and Gas Facilities

a. Property used for oil and gas production and transmission.

RP

b. Gas stations.

RP

c. Vehicular service stations.

RP

9. Health Facilities

a. Hospitals and medical buildings and clinics.

RP

b. Sanitariums, nursing and convalescent homes.

RP

c. Morgues and autopsy facilities.

RP

10. Elevated Facilities

a. Property with a building located over 46 feet above the street level.

TBD

(Ord. 1399.12 § 11-2, 2017)

3.05.580 Installation, testing and maintenance of protective devices.

Cross connection protective devices shall be installed, tested and maintained by the district at the expense of the customer as provided in CVWDC 3.05.250. In accordance with Cal. Code Regs. tit. 17, the district maintains a record of the locations, tests and repairs of all cross connection protective devices installed on service connections within the district’s water system. The district conducts annual testing of cross connection protective devices.

Customers are not authorized to install protective covers or cages on cross connection protective devices. (Ord. 1399.12 § 11-3, 2017)

3.05.590 Termination of service.

The district has the right to immediately terminate domestic water service to a customer if an unprotected or unauthorized cross connection exists on the property or if a cross connection protective device has been removed or bypassed. In addition, the district has the right to terminate domestic water service, in accordance with CVWDC 3.05.310(A), if a customer refuses to allow the district to install or test a required cross connection protective device. Service will not be restored until such conditions or defects are corrected. A charge will be made for the restoration of service as provided for in CVWDC 3.05.200. (Ord. 1399.12 § 11-4, 2017)