The purpose of the ordinance codified in this chapter is as
follows:
A.
To
protect the public water system against actual or potential contamination
through cross-connections by isolating sources of contamination that
may occur within a water user's premises because of some undiscovered
or unauthorized cross-connection on the premises;
B.
To
eliminate existing connections between public water systems and other
sources of water, plumbing fixtures, or industrial piping systems
that are not approved as safe and potable for human consumption;
C.
To
eliminate cross-connection between drinking water systems and sources
of contamination;
D.
To
prevent the making of cross-connections in the future; and
E.
To
provide for the maintenance of a continuing program of cross-connection
control which will systematically and effectively prevent the contamination
or pollution of all potable water systems.
(Ord. 926, 1991)
These regulations are adopted pursuant to the California Code
of Regulations, Title 17, Public Health, entitled "Regulations Relating
to Cross-Connections."
The cross-connection control program includes the following
elements:
A.
The
conducting of surveys and on-site inspections to identify water user
premises where cross-connections are likely to occur;
B.
The
requirement of backflow protection by the water user, at his or her
expense, at the user's service connection or within the user's premises,
or both;
C.
The
provision of at least one person trained in cross-connection control
to carry out the cross-connection program;
D.
The
requirement for testing of approved backflow prevention devices, at
the user's expense, on an annual or more frequent basis, and establishment
of a procedure or system for notification of the schedule for testing;
E.
The
maintenance of records of locations, tests and repair of approved
backflow prevention devices.
(Ord. 926 (part), 1991)
For purposes of this chapter the following terms have the following
meanings:
means a physical break between a supply pipe; and a receiving
vessel. The air-gap separation shall be at least double the diameter
of the supply pipe measured vertically above the top rim of the vessel,
and in no case shall it be less than one inch.
means any device which has passed laboratory and field evaluation
tests per-formed by a recognized testing organization which has demonstrated
their competency to perform such tests to the California Department
of Health Services and which is acceptable for installation within
the city of Manteca.
means any water supply whose potability is regulated by a
state or local health agency.
means any water supply on or available to the premises other
than the approved water supply.
means an official standard developed and approved by the
American Water Works Association.
means a flow condition caused by a differential in pressure
that creates a 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.
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.
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, unwholesome and potable
as determined by the health agency. Bypass arrangements, jumper connections,
removable sections, swivel or changeover devices, or other devices
through which backflow could occur, are considered to be cross-connections.
means an assembly of at least two independently acting check
valves including tightly closing shut-off valves on each side of the
check valve assembly and test cocks available for testing the water-tightness
of each check valve.
means the California Department of Health Services, or the
local health agency with respect to a small water system.
means the county or city health authority.
means an individual, corporation, company, association, partnership,
municipality, public utility, or other public body or institution.
means any and all areas on a water user's property which
are served or have the potential to be served by the public water
system.
means a system for the provision of piped water to the public
for human consumption that has five or more service connections or
regularly serves an average of twenty-five persons daily at least
sixty days out of the year.
means a wastewater which, as a result of treatment, is suitable
for uses other than potable uses.
means a device incorporating two or more check valves and
an automatically operating differential relief valve located between
the two checks, a tightly closing shut-off valve on each side of the
check valve assembly, and equipped with necessary test cocks for testing.
refers to the point of connection of a water user's piping
to the water supplier's facilities.
means the person who owns or operates the approved water
supply system.
means any person obtaining water from an approved water supply
system.
(Ord. 926 (part), 1991; Ord. 1058 § 1, 1997; Ord. 1107 § 2, 1999)
A.
General
Provisions.
1.
Unprotected
cross-connections with the public water system are prohibited.
2.
Wherever
backflow protection has been found necessary, the city shall require
the water user to install an approved backflow prevention device at
his or her expense for continued service or before a new service will
be granted.
3.
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 mains entering such premises, buildings or structures
shall be protected by an approved backflow prevention device. The
type of device to be installed shall be in accordance with the requirements
of this chapter.
B.
Where
Protection is Required.
1.
Each
service connection from the city water system for supplying water
to premises have 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.
2.
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 of the water from the premises into the public water system.
This shall include the handling of process waters and waters originating
from the city water system which have been subjected to deterioration
of sanitary quality.
3.
Approved
backflow prevention devices shall be installed on the service connection
to any premises having (a) internal cross-connections that cannot
be permanently corrected and controlled to the satisfaction of the
state or local health department and the city, or (b) 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 whether or not cross-connections exist.
4.
Where
several businesses and/or buildings at one location are served by
a single service connection to the city water system, an approved
backflow prevention device will be required at the service connection
point. In addition, any business/building use that requires a backflow
prevention device, shall have a separate device installed on their
premises where the service connection line enters their business/building.
C.
Type
of Protection Required.
1.
The
type of protection that shall be provided to prevent backflow into
the approved water supply shall be commensurate with the degree of
hazard that exists on the consumer's premises. The type or types of
protective device or devices that shall be required (listed here in
increasing level of protection) include: reduced pressure principle
backflow prevention device (RP), or an air-gap separation (AG). The
water user may choose a higher level of protection than required by
the city, but not a lower level of protection than required by the
city. Existing double check valve assembly devices which are currently
installed may remain in service until such time as they need to be
replaced, at which time they shall be replaced with a currently approved
protective device. The minimum types of backflow protection required
to protect the approved water supply, at the user's water connection
to premises with varying degrees of hazard, are given in Table 13.06.040.
Situations which are not covered in Table 13.06.040 shall be evaluated
on a case-by-case basis and the appropriate backflow protection shall
be determined by the city and/or health agency.
2.
Two
or more services supplying water from different street mains to the
same building, structure, or premises through which an interstreet
flow may occur, shall have at least a double check valve on each water
service to be located adjacent to and on the property side of the
respective meters.
|
Table 13.06.040
|
|---|
|
BUSINESS TYPES OR ON-SITE USES REQUIRING THE PROTECTION
OF A DOUBLE CHECK VALVE
|
|
Fire systems (no auxiliary supply)
|
|
BUSINESS TYPES OR ON-SITE USES REQUIRING INSTALLATION
OF A REDUCED PRESSURE BACKFLOW DEVICE
|
|
Animal services, pet shops (retail or supplies)
|
|
Automotive repair or wrecking
|
|
Auxiliary water systems* (interconnected or not) (*Private wells
are considered auxiliary water systems.)
|
|
Barber and beauty shops (all services)
|
|
Beverage, bottling or processing plants
|
|
Blueprint machines
|
|
Brewery
|
|
Buildings with booster pump systems and/or water storage tanks
|
|
Canneries, packing houses, or reduction plants
|
|
Car washes or car washing equipment
|
|
Chemical processing or storage facilities
|
|
Cold storage plants
|
|
Cooling towers
|
|
Dairies
|
|
Dehydration tanks
|
|
Dye works
|
|
Fertilizer manufacturing
|
|
Film processing laboratories
|
|
Fire systems (auxiliary supply)
|
|
Fish ponds
|
|
Food processing plants
|
|
Gas stations
|
|
Grocery store
|
|
HVAC systems using water
|
|
Hospitals
|
|
Hotels, motels
|
|
Hydraulic lifts
|
|
Industrial fluid systems
|
|
Irrigation systems for commercial/industrial users
|
|
Irrigation systems with chemical feed
|
|
Laboratories
|
|
Laundries
|
|
Lavatories, restrooms (open to public use)
|
|
Livestock or poultry
|
|
Manufacturing or processing using toxic materials
|
|
Medical/dental buildings and clinics
|
|
Metal plating plants
|
|
Mobile home parks
|
|
Morgues
|
|
Mortuaries
|
|
Multi-story buildings
|
|
Nursing homes
|
|
Oil or gas production facilities
|
|
Oil or gas tanks
|
|
Open reservoirs, tanks
|
|
Paper or paper products plants
|
|
Petroleum process or storage locations
|
|
Plating plants
|
|
Ponds, pools, fountains (ornamental)
|
|
Power plants
|
|
Radioactive material processing/handling
|
|
Reclamation systems (any location with)
|
|
Restaurants
|
|
Sand and gravel plants
|
|
Schools (lab facility, auxiliary supply)
|
|
Schools (lab facility, no auxiliary supply)
|
|
Schools (no lab facility, auxiliary supply)
|
|
Schools (no lab facility, no auxiliary supply)
|
|
Sewage treatment plants
|
|
Soda fountains
|
|
Solar heating
|
|
Steam-generating facilities
|
|
Storage tanks for liquids
|
|
Swimming pools, public
|
|
Veterinary clinics
|
|
Warehousing and storage
|
|
Water-cooled equipment
|
|
Water treatment facilities
|
|
Water-using mechanical equipment
|
|
Wastewater reclamation*(*not interconnected)
|
|
BUSINESS TYPES OR ON-SITE USES REQUIRING THE PROTECTION
OF AIR-GAP SEPARATION
|
|
Sewage pumping facilities
|
|
Spray tanks (portable for insecticide/herbicide
|
|
Storm drain pumping facilities
|
|
Tank trucks using hydrant supply
|
|
Wastewater reclamation (interconnected)
|
(Ord. 926 (part), 1991; Ord. 1058 §§ 2, 3, 1997; Ord. 1076 § 1, 1997; Ord. 1107 § 1, 1999)
A.
Approved
Backflow Prevention Devices.
B.
Approved
Backflow Prevention Device Installation.
1.
Approved backflow prevention devices shall be installed in a manner prescribed in Section 7603, Title 17, of the California Code of Regulations. Location of the devices should be as close as practical to the user's connection. The city shall have the final authority in determining the required location of an approved backflow prevention device.
a.
Air-Gap Separation (AG). The air-gap separation shall be located
on the user's side of and as close to the service connection as is
practical. All piping from the service connection to the receiving
tank shall be above grade and be entirely visible. No water use shall
be provided from any point between the service connection and the
air-gap separation. The water inlet piping shall terminate a distance
of at least two pipe diameters from the supply inlet, but in no case
less than one inch above the overflow rim of the receiving tank.
b.
Reduced Pressure Principle Backflow Prevention Device (RP). The approved
reduced pressure principle backflow prevention device shall be installed
on the user's side of and as close to the service connection as is
practical. The device shall be installed a minimum of twelve inches
above grade but not more than thirty-six inches above grade measured
from the bottom of the device and with a minimum of twelve inches
side clearance. The device shall be installed in a horizontal position
so that it is readily accessible for maintenance and testing. Water
supplied from any point between the service connection and the RP
device shall be protected in a manner approved by the city.
C.
Backflow
Prevention Device Testing and Maintenance.
1.
The
owners of any premises on which, or on account of which, backflow
prevention devices are installed, shall have the devices tested by
a person who has demonstrated their competency in testing of these
devices to the city. Approved backflow prevention devices shall be
tested immediately after installation, relocation, or repair, and
at least annually thereafter. The city may require a more frequent
testing schedule if it is determined to be necessary. No device shall
be placed back in service unless it is functioning and approved by
the city. A report in a form acceptable to the city shall be filed
with the city each time a device is tested, relocated or repaired.
These devices shall be serviced, overhauled and/or replaced whenever
they are found to be defective and all costs of testing, repair and
maintenance shall be borne by the water user.
2.
The
city shall supply affected water users with a list of persons acceptable
to the city to test approved backflow prevention devices. The city
may notify affected customers by mail when annual testing of a device
is needed and also supply users with the necessary forms which must
be filled out each time a device is tested or repaired. It is the
responsibility of the affected customer to maintain annual testing
of any device, whether the city notifies that customer or not. It
is, and always will be, the water user's responsibility to comply
with state and federal laws with regard to backflow prevention. Notification
of affected customers is provided by the city as a courtesy only and
does not absolve the customer from their responsibility for compliance.
D.
Backflow
Prevention Device Removal. Approval shall be obtained from the city
before a backflow prevention device is removed, relocated, repaired,
or replaced.
1.
Removal.
The use of a device may be discontinued and the device removed from
service upon presentation of sufficient evidence to the city to verify
that a hazard no longer exists or is not likely to be created in the
future.
2.
Relocation.
A device may be relocated following approval by the city that the
relocation will continue to provide the required protection and satisfy
installation requirements. A retest will be required following the
relocation of the device.
3.
Repair.
A device may be removed for repair, provided the water use is either
discontinued until repair is completed and the device is returned
to service, or the service connection is equipped with other backflow
protection approved by the city. A retest will be required following
the repair of the device.
4.
Replacement.
A device may be removed and replaced provided the water use is discontinued
until the replacement device is installed. All replacement devices
must be approved by the city and must be commensurate with the degree
of hazard involved.
(Ord. 926 (part), 1991; Ord. 1058 §4, 1997)
A.
Water
System Survey.
1.
The
city shall review all requests for new services to determine if backflow
protection is needed. Plans and specifications shall be submitted
to the city, upon its request, for review of possible cross-connection
hazards as a condition of service for new service connections. If
it is determined that a backflow prevention device is necessary to
protect the public water system, the required device shall be installed
before service will be granted. A city building permit is required
for installation of the device.
2.
The
city may require an on-premises inspection by a water division employee
to evaluate cross-connection hazards. The city will transmit a written
notice requesting an inspection appointment to each affected water
user. Any water user who cannot or will not allow an on-premises inspection
of his or her piping system shall be required to install the approved
backflow prevention device the city considers necessary.
3.
The
city may, at its discretion, require a reinspection for cross-connection
hazards of any premises to which it serves water. The city will transmit
a written notice requesting an inspection appointment to each affected
water user. Any water user who cannot or will not allow an on-premises
inspection of his or her piping system shall be required to install
the approved backflow prevention device the city considers necessary.
B.
Customer
Notification—Device Installation.
1.
The
city will notify the water user of the survey findings listing the
corrective actions to be taken, if any are required. A period of time,
not to exceed sixty days, shall be given to complete all corrective
actions required, including installation of approved backflow prevention
devices.
2.
A
second notice will be sent to each water user who does not take the
required corrective actions prescribed in the first notice within
the specified period allowed. The second notice will give the water
user a two-week period to take the required corrective action. If
no action is taken within the two-week period the city may discontinue
water service to the affected water user until the required corrective
actions are taken.
C.
Customer
Notification—Testing and Maintenance.
1.
The
city will notify each affected water user when it is time for the
backflow prevention device installed on their service connection to
be tested. This written notice shall give the water user thirty days
to have the device tested, and will include the necessary form to
be completed and submitted to the city by the water user.
2.
A
second notice shall be sent to each water user which does not have
his or her backflow prevention device tested as prescribed in the
first notice within the thirty-day period allowed. The second notice
will give the water user a two-week period to have his or her backflow
prevention device tested. If no action is taken within the two-week
period the city may discontinue water service to the affected water
user until the subject device is tested.
(Ord. 926 (part), 1991)
A.
General.
In the event the city encounters water uses that represent a clear
and immediate hazard to the potable water supply that cannot be immediately
abated, the city shall institute the procedure for discontinuing the
city water service.
B.
Basis
for Discontinuation. Conditions or water uses that create a basis
for water service discontinuation shall include the following items:
1.
Refusal
to install a required backflow prevention device;
2.
Refusal
to test a backflow prevention device;
3.
Refusal
to repair a faulty backflow prevention device;
4.
Refusal
to replace a faulty backflow prevention device;
5.
Direct
or indirect connection between the public water system and a sewer
line;
6.
Unprotected
direct or indirect connection between the public water system and
a system or equipment containing contaminants;
7.
Unprotected
direct or indirect connection between the public water system and
an auxiliary water supply; and/or
8.
A
situation which presents an immediate health hazard to the public
water system.
C.
Water
Service Discontinuation Procedures.
1.
For conditions 1, 2, 3 or 4 of subsection B of this section, the city shall discontinue service to a water user's premises after two written notices have been sent specifying the corrective action needed and the time period in which it must be done. If no action is taken within the allowed time period, water service may be discontinued.
(Ord. 926 (part), 1991)
A.
Each
applicant for certification to check backflow prevention devices shall
file a valid American Water Works Association, California/Nevada Section,
certificate for backflow prevention device general tester with the
director of public works, together with a copy of their city business
license.
B.
Each
applicant for certification to check backflow prevention devices must
demonstrate competency in all phases of backflow prevention device
testing and repair by means of education and/or experience. Each applicant
shall furnish evidence that they have the necessary tools and equipment
available to properly test and repair backflow prevention devices.
C.
Person
certified to check backflow prevention devices shall be responsible
for the competency and accuracy of all tests conducted, repairs made,
and reports prepared in their name.
D.
The
list of certified testers of backflow prevention devices shall be
kept on file with the city director of public works. Testers shall
provide verification to the director of public works that they possess
a valid certification; and a valid city business license at least
annually. Failure to do so shall be cause for removal from the city's
list of certified testers for improper testing, improper repairs and/or
improper reporting. The city shall notify the tester that their name
is to be removed form the list of qualified testers, giving the reasons
for removal. The tester will have ten days from the date of notification
to file an appeal with the city council.
(Ord. 926 (part), 1991)
The California State Manual of Cross-Connection Control Practices
and Procedures, the Manual of Cross-Connection Control published by
the Foundation for Cross-Connection and Hydraulic Research of the
University of Southern California, and the Accepted Procedure and
Practice in Cross-Connection Control Manual of the American Water
Works Association are hereby incorporated by reference into this chapter.
If any conflict exists between these manuals and this chapter, this
chapter shall control.
(Ord. 926 (part), 1991)
It is unlawful, and a misdemeanor, for any person 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 water division of the department of public works, and any other
source of water supply; or to maintain any sanitary fixture or other
appurtenances or fixtures which, by reason of their construction or
otherwise, may cause or allow backflow of water or other substances
into the public water system of the city and/or the service of water
pipes or fixtures of any consumer of the city. It is further unlawful,
and a misdemeanor, for any person to violate any provisions of this
chapter.
(Ord. 926 (part), 1991)
