TIONS
20.03 GENERAL
PROVISIONS
20.04 REQUIRED
PROTECTION
20.05 BACKFLOW
PREVENTION
DEVICES
20.06 USER
SUPERVISOR
20.07 ADMINISTRATIVE
PROCEDURES
20.08 WATER SERVICE TERMINATION galt code
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Chapter 20.01
PURPOSE
Sections:
20.01.010 Purpose.
Section 20.01.010 Purpose.

It is the purpose of this title to:
A. Protect the public water supply against the actual or potential cross-connection by
isolating within the premises contamination that may occur because of some undiscovered or
unauthorized cross-connection on the premises;

B. Eliminate existing connection between drinking water systems and other sources of water
that are not approved as safe and potable for human consumption;
C. Eliminate cross-connections between drinking water systems and sources of
contamination;

D. Prevent the making of cross-connections in the future. (Ord. 88-11 § 1 (part))

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Chapter 20.02
DEFINITIONS
Sections:
20.02.010 Air-gap
separation.
20.02.020 Approved
backflow
prevention
device.
20.02.030 Approved
water
supply.
20.02.040 Auxiliary
supply.
20.02.050 AWWA
standard.
20.02.060 Backflow.
20.02.070 Contamination.
20.02.080 Cross-connection.
20.02.090 Double check valve assembly.
20.02.100 Health
agency.
20.02.110 Local health agency.
20.02.120 Person.
20.02.130 Premises.
20.02.140 Reduced
pressure
principle
assembly.
Section 20.02.010 Air-gap separation.

The term "air-gap separation" means a physical break between a supply pipe and a receiving
vessel. The air gap shall be at least double the diameter of the supply pipe measured vertically
above the top rim of the vessel, in no case less than one inch. (Ord. 88-11 § 1 (part))

Section 20.02.020 Approved backflow prevention device.
The term "approved backflow prevention device" means devices which have passed
laboratory and field evaluation tests performed by a recognized testing organization which has
demonstrated its competency to perform such tests to the California Department of Health
Services. (Ord. 88-11 § 1 (part))

Section 20.02.030 Approved water supply.

The term "approved water supply" means any water supply whose potability is regulated by a
state or local health agency. (Ord. 88-11 § 1 (part))

Section 20.02.040 Auxiliary supply.

The term "auxiliary supply" means any water supply on or available to the premises other
than the approved water supply. (Ord. 88-11 § 1 (part))

Section 20.02.050 AWWA standard.

The term "AWWA standard" means an official standard developed and approved by the
American Water Works Association (AWWA). (Ord. 88-11 § 1 (part))

Section 20.02.060 Backflow.

The term "backflow" means a flow condition, caused by a differential in pressure, that causes
the flow of water or other liquids, gases, mixtures or substances into the distributing pipes of a
potable supply of water from any source or sources other than an approved water supply source.
Back-siphonage is one cause of backflow. Back pressure is the other cause. (Ord. 88-11 § 1 galt code
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(part))

Section 20.02.070 Contamination.

The term "contamination" means a degradation of the quality of the potable water by any
foreign substance which creates a hazard to the public health or which may impair the usefulness
or quality of the water. (Ord. 88-11 § 1 (part))

Section 20.02.080 Cross-connection.

The term "cross-connection," as used in this title, means any unprotected actual or potential
connection between a potable water system used to supply water for drinking purposes and any
source or system containing unapproved water or a substance that is not or cannot be approved as
safe, wholesome and potable. Bypass arrangements, jumper connections, removable sections,
swivel or changeover devices, or other devices through which backflow could occur, shall be
considered to be cross-connections. (Ord. 88-11 § 1 (part))

Section 20.02.090 Double check valve assembly.

The term "double check valve assembly" means an assembly of at least two independently
acting check valves including tightly closing shutoff valves on each side of the check valve
assembly and test cocks available for testing the watertightness of each check valve. (Ord. 88-11
§ 1 (part))

Section 20.02.100 Health agency.

The term "health agency" means the California Department of Health Services, or the local
health agency with respect to a small water system. (Ord. 88-11 § 1 (part))

Section 20.02.110 Local health agency.

The term "local health agency" means the county or city health authority. (Ord. 88-11 § 1
(part))

Section 20.02.120 Person.

The term "person" means an individual, corporation, company, association, partnership,
municipality, public utility, or other public body or institution. (Ord. 88-11 § 1 (part))

Section 20.02.130 Premises.

The term "premises" means any and all areas on a customer's property which are served or
have the potential to be served by the public water system. (Ord. 88-11 § 1 (part))

Section 20.02.140 Reduced pressure principle assembly.
The term "reduced pressure principle assembly" means a backflow prevention device
incorporating two independently acting check valves, a hydraulically operating, mechanically
independent pressure relief valve, a shut-off valve at each end of the device and necessary
appurtenances for testing as required by the department. (Ord. 93-05 § 1)

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Chapter 20.03
GENERAL PROVISIONS
Sections:
20.03.010 Basis for establishing cross-connection control.
20.03.020 Cross-connection
unlawful.
20.03.030 Unprotected cross-connection prohibited.
20.03.040 Installation by water user.
20.03.050 Protection of water supply lines.
20.03.060 Administration under contract.
Section 20.03.010 Basis for establishing cross-connection control.

These regulations are adopted pursuant to the State of California Administrative Code, Title
17, Public Health, entitled "Regulations Relating to Cross-Connection." (Ord. 88-11 § 1 (part))

Section 20.03.020 Cross-connection unlawful.

It is unlawful for any person, firm, or corporation, at any time to make or maintain or cause to
be made or maintained, temporarily or permanently, for any period of time whatsoever, any
cross- connection between plumbing pipes or water fixtures being served with water by the city
water department and any other source of water supply or to maintain any sanitary fixture or other
appurtenances or fixtures which, by reason of their construction, may cause or allow backflow of
water or other substances into the water supply system of the city and/or the service of water
pipes or fixtures of any consumer of the city. (Ord. 88-11 § 1 (part))

Section 20.03.030 Unprotected cross-connection prohibited.

Unprotected cross-connections with the public water supply are prohibited. (Ord. 88-11 § 1
(part))

Section 20.03.040 Installation by water user.

Whenever backflow protection has been found necessary, the city will require the water user
to install an approved backflow prevention device by and at his/her expense for continued
services or before a new service will be granted. (Ord. 88-11 § 1 (part))

Section 20.03.050 Protection of water supply lines.

Wherever backflow protection has been found necessary on a water supply line entering a
water user's premises, then any and all water supply lines from the city's mains entering such
premises, buildings, or structures shall be protected by an approved backflow prevention device.
The type of device to be installed will be in accordance with the requirements of this title. (Ord.
88-11 § 1 (part))

Section 20.03.060 Administration under contract.

The city may contract with, delegate, or assign other entities the administration of the
provisions of this title. (Ord. 93-05 § 2)

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Chapter 20.04
REQUIRED PROTECTION
Sections:
20.04.010 Where protection is required.
20.04.020 Type of protection required.
Section 20.04.010 Where protection is required.

A. Each service connection from the city water system for supplying water to premises
having an auxiliary water supply shall be protected against backflow of water from the premises
into the public water system unless the auxiliary water supply is accepted as an additional source
by the city, and is approved by the public health agency having jurisdiction.

B. Each service connection from the city water system for supplying water to any premises
on which any substance is handled in such fashion as may allow its entry into the water system
shall be protected against backflow from the premises into the public system. This shall include
the handling of process waters and waters originating from the city water system which have been
subjected to deterioration in sanitary quality.

C. Backflow prevention devices shall be installed on the service connection to any premises
having (1) internal cross-connections that cannot be permanently corrected and controlled to the
satisfaction of the state or local health department and the city, or (2) intricate plumbing and
piping arrangements or where entry to all portions of the premises is not readily accessible for
inspection purposes, making it impracticable or impossible to ascertain