HomeMy WebLinkAboutOrdinance - 2005-O0001 - Ordinance Repealing Ordinance No. 10208; Amending Chpt 6; Est. Backflow Testing - 01/13/2005First Reading
January 13, 2005
Item No. 11
ORDINANCE NO. 2005-ooOOl
Second Reading
January 27, 2005
Item No. 13
AN ORDINANCE REPEALING ORDINANCE NUMBER 10208 AND
AMENDING CHAPTER 6 OF THE CODE OF ORDINANCES OF THE CITY OF
LUBBOCK, TEXAS, BY ADDING NEW SECTIONS 6~82, 6-100.1, 6-100.2 AND 6-
100.3, WITH REGARD TO THE ADDITION OF LOCAL PROVISIONS AFFECTING
THE 2000 INTERNATIONAL PLUMBING AND RESIDENTIAL CODES AND
RELATING TO BACKFLOW PREVENTION AND THE ESTABLISHMENT OF A
BACKFLOW PREVENTION DEVICE TESTING PROGRAM CONFORMING TO
THE REQUIREMENTS OF THE TEXAS COMMISSION ON ENVIRONMENTAL
QUALITY; PROVIDING A SAVINGS CLAUSE; PROVIDING A PENALTY
CLAUSE; AND PROVIDING FOR PUBLICATION.
WHEREAS, the City Council ofthe City of Lubbock finds and determines that it
is necessary to protect the health, safety and welfare of its citizens by regulating and
controlling connections to the potable water system of the City and to prohibit any
connection to the potable water system that has a potential for contamination or pollution
of the potable water system; and
WHEREAS, the purpose of this ordinance is to establish minimum requirements
for the installation, repair, replacement, removal, inspection and testing of potential
points of contamination or pollution to the potable water system of the City; and"
WHEREAS the State of Texas, through its statutes and the regulations and rules
of the Texas Commission on Environmental Quality ("TCEQ"), requires protection of the
public water supply through appropriate cross connection control measures and local
administration of a backflow prevention device testing program; and
WHEREAS, the City Council of the City of Lubbock finds and determines that it
is in the best interest of the health, safety, and welfare of the citizens of the City of
Lubbock to make the following amendments to Chapter 6 of the Code of Ordinances of
the City of Lubbock. NOW, THEREFORE;
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF LUBBOCK:
SECTION 1. That Ordinance Number 10208, passed on second reading on
October 28, 1999, is hereby repealed in its entirety.
SECTION 2. That the Code of Ordinances of the City of Lubbock is hereby
amended by adding a new Section to be numbered Section 6-82, which said Section shall
read as follows:
Sec. 6-82. Definitions.
For the purposes of Section 6-100.1, Section 6-100.2 and Section 6-100.3
ofthe Code of Ordinances ofthe City of Lubbock, and Section 312.9 and Section
Back.flow Ordinance
Page I of 16
608 of the 2000 International Plumbing Code, and Sections P2503.7 and P2902 of
the 2000 International Residential Code, the following definitions shall apply. In
the event of a conflict between the definitions set forth below and the definitions
provided in the 2000 International Plumbing or Residential Codes, for the
purposes of Sections 6-100.1, 6-100.2 and 6-100.3 of the Code of Ordinances of
the City of Lubbock, Sections 312.9 and 608 of the 2000 International Plumbing
Code, and Sections P2503.7 and P2902 of the 2000 International Residential
Code, the definitions set forth below shall control.
(1) Air gap shall mean the unobstructed vertical distance
through the free atmosphere between the lowest opening
from any pipe or faucet conveying water to a tank, fixture,
receptor, sink, or other assembly and the flood level rim of
the receptacle. The vertical, physical separation must be at
least twice the diameter of the water supply outlet, but never
less than 1.0 inch. An air gap may also be a horizontal space
between two pipes at no less than 6.0 inches.
(2) Approved shall mean accepted by the authority
responsible as meeting an applicable specification stated or
cited in this ordinance or as suitable for the proposed use.
(3) Auxiliary water supply shall mean any water supply
on or available to the premises other than the purveyor's
approved public water supply. These auxiliary waters may
include water from another purveyor's public water supply
or any natural source(s) such as a well, spring, river or
stream or used waters; or industrial fluids. These waters
may be contaminated or polluted or they may be
objectionable and constitute an unacceptable water source
over which the water purveyor does not have sanitary
control.
(4) Backjlow shall mean the undesirable reversal of flow
in a public water distribution system as a result of a cross
connection.
(5) Backjlow prevention assembly shall mean an
approved assembly to counteract backpressure or prevent
backsiphonage.
( 6) Backjlow prevention assembly test and maintenance
report shall mean the report required for each backflow
prevention assembly upon initial installation and periodically
thereafter as required, giving evidence that the backflow
prevention assembly has been properly selected based on the
Back:flow Ordinance
Page 2 of 16
degree of hazard, and has been properly installed and tested
in accordance with applicable standards, and showing the
results of this test. The completed fonn will be forwarded to
the Building Inspection Department of the City for
documentation and forwarded to the water pwveyor for
annual record keeping.
(7) Backpressure shall mean pressure created by any
means in the water distribution system, which by being in
excess of the pressure in the water supply mains causes a
potential backflow condition.
(8) Backsiphonage shall mean the backflow of
potentially contaminated water into the potable water system
as a result of the pressure in the potable water system falling
below atmospheric pressure of the plumbing fixtures, pools,
tanks or vats coiUlected to the potable water distribution
piping.
(9) Building Official shall mean the officer charged with
the enforcement of the building, plumbing, mechanical,
electrical, fuel gas, and energy conservation codes of the
City, or his duly authorized representative. For purposes of
this ordinance, all Texas-licensed plumbing inspectors under
the supervision of the Building Official are his duly
authorized representatives.
(10) Contamination shall mean an impainnent of the
quality of the potable water that creates an actual hazard to
the public health through poisoning or through the spread of
disease by sewage, industrial fluids or waste.
(11) Cross connection shall mean a physical coMection
or potential connection between a public water system and
either another supply of unknown or questionable quality, or
another source that may contain contaminating or polluting
substances, any source of water treated to a lesser degree in
the treatment process, or any steam, gas or chemical system.
(12) Cross connection control device shall mean any
nationally approved or recognized device placed upon any
connection, physical or otherwise, between a potable water
supply system and any plumbing fixture or any tank,
receptacle, equipment or device, which is designed to
prevent nonpotable, used, unclean, polluted and
contaminated water, or other substance, from entering into
Backflow Ordinance
Page 3 ofl6
any part of such potable water system Wlder any condition or
set of conditions.
(13) Cross connections-controlled shall mean a
connection between a public water system and a nonpublic
water system with an approved backflow prevention
assembly properly installed and maintained so that it will
continuously afford the protection commensurate with the
degree of hazard.
(14) Cross connection control by containment shall mean
the installation of an approved backflow prevention
assembly at the water service connection to any customer's
premises, where it is physically or economically Wlfeasible
to find and permanently eliminate or control all actual or
potential cross connections within the customer's water
system; or it shall mean the installation of an approved
backflow prevention assembly on the service line leading to
and supplying a portion of a customer's water system where
there are actual or potential cross connections that cannot be
effectively eliminated or controlled at the point of the cross
connection.
(15) Customer/property owner shall mean the owner, as
determined by the real property records of Lubbock Com1ty,
Texas, or the agent of the owner in responsible charge of the
subject premises. For purposes of this ordinance, a licensed
plumber and/or irrigator shall be deemed to be an agent of
the owner when performing work under the scope of this
ordinance pursuant to a plumbing and/or irrigation permit.
(16) Customer service inspection shall mean an inspection
designed to detect any actual or potential point of
contamination of the potable water system and/or cross
connection hazards.
(17) Degree of hazard shall mean the non-health hazard or
health hazard classification that shall be attached to all actual
or potential cross connections.
(a) Non-health hazard shall mean a cross
connection or potential cross connection
involving any substance that generally would not
be a health hazard but would constitute a
nuisance or be aesthetically objectionable, if
introduced into a public water supply.
Backflow Ordinance
Page 4 of16
(b) Health hazard shall mean the classification
assigned to an actual or potential cross
connection that potentially could allow a
substance that may cause illness or death or has a
high probability of causing such effects if
introduced into the potable drinking water
supply.
(18) Double check valve backjlow assembly (DCVA), double check
assembly, and double check (DC) shall mean an assembly consisting of
two independently acting. approved check valves, including tightly closing
resilient seated shutoff valves attached at each end of the assembly and
fitted properly located resilient seated test cocks. This assembly shall only
be used to protect against a non-health hazard (that is, a pollutant).
(19) Fireline tester shall mean a tester who is qualified to test backflow
prevention assemblies on firelines. This person must be licensed by
TCEQ and registered with the City.
(20) General tester shall mean a backflow assembly device tester who
is qualified to test backflow prevention assemblies on any domestic,
commercial, industrial or irrigation service except firelines. This person
must be licensed by TCEQ and registered with the City.
(21) Licensed professional shall mean any individual, or their
representative, that must maintain a license obtained through a
professional licensing board in order to conduct their business under state
law.
(22) Nonpotable water shall mean water not safe for drinking, personal
or culinary utilization.
(23) Pollution shall mean an impairment of the quality of the potable
water to a degree that does not create a hazard to the public health but that
does adversely and unreasonably affect the aesthetic qualities of such
potable water for domestic use.
(24) Point of use isolation shall mean the appropriate backflow
prevention within the consumer's water system at the point at which the
actual or potential cross connection exists.
(25) Potable water shall mean water free from impurities present in
amounts sufficient to cause disease or harmful physiological effects and
conforming to the bacteriological and chemical quality requirements of the
Public Health Service Drinking Water Standards or the regulations of any
public health authority having jurisdiction over such matters.
Backflow Ordinance
Page 5 of16
(26) Public Health Service Drinking Water Standards shall mean the
standards set forth in 30 TAC 290 Subchapter F, as may be amended from
time to time.
(27) Reduced pressure principle backjlow prevention assembly (RPBA),
reduced pressure principle assembly, RPZ or RP assembly shall mean a
backflow prevention device consisting of two independently acting check
valves, internally force-loaded to a normally closed position and separated
by an intermediate chamber (or zone) in which there is an automatic relief
means of venting to the atmosphere, internally loaded to a normally open
position between two tightly closing shutoff valves and with a means for
testing for tightness of the checks and opening of the relief means.
(28) Service connection shall mean the point of delivery where the
water purveyor loses control over the water.
(29) Used water shall mean any water supplied by a water purveyor
from a public water system to a consumer's water system after it has
passed through the point of delivery or service connection and is no longer
under the sanitary control of the water purveyor.
(30) Water purveyor shall mean the Director in charge of the water
department of the City of Lubbock, who is vested with the authority and
responsibility for the implementation of an effective cross connection
control program and for the enforcement of the provisions of this
ordinance.
SECTION 3. THAT the Code of Ordinances of the City of Lubbock, Texas, is
hereby amended by adding a new Section to be numbered Section 6-100.1, which said
Section shall read as follows:
Sec. 6-100.1 General.
Section 6-100.1, Section 6-100.2, and Section 6-I 00.3 of the Code of
Ordinances of the City of Lubbock are intended to supplement Section 312.9,
"Inspection and Testing of Backflow Prevention Assemblies", and Section 608,
"Protection of Potable Water Supply'' of the 2000 International Plumbing Code,
as well as Sections P2503. 7 and P2905 of the 2000 International Residential
Code, both codes having been previously adopted as a part of the Code of
Ordinances of the City of Lubbock, Texas. In the event of any conflict between
Sections 312.9 or 608 of the 2000 International Plumbing Code or Sections
P2503.7 or P2905 of the 2000 International Residential Code and Section 6-100.1,
Section 6-100.2, and Section 6-100.3 of the Code of Ordinances of the City of
Lubbock, Texas, the provisions of Section 6-100.1, Section 6-100.2, and Section
6-100.3 of the Code of Ordinances of the City of Lubbock shall control. Section
6-100.1, Section 6-100.2, and Section 6-100.3 of the Code of Ordinances of the
Backflow Ordinance
Page 6 of16
City of Lubbock shall be liberally construed to protect the public health and safety
of the citizens of the City of Lubbock, Texas.
SECTION 4. THAT the Code of Ordinances of the City of Lubbock, Texas, is
hereby amended by adding a new Section to be numbered Section 6-100.2, which said
Section shall read as follows:
Sec. 6·100.2. Responsibilities of the Water Purveyor, User, and
Customer/Property Owner.
(a) ResponSibilities of water purveyor.
(1) No water service connection to any premises shall be installed or
maintained by the water purveyor unless the water supply is protected as
required by state law, including without limitatio~ 30 T AC 290.44(h), 30
TAC 290.47(i), 30 TAC 344.73 and 30 TAC 344.75, as same may be
amended from time to time. Service of water, subject to the provisions of
Sections 6-100.1, 6-100.2, or 6-100.3 of the Code of Ordinances of the
City of Lubbock, or Sections 312.9 or 608 of the 2000 International
Plumbing Code, or Sections P2503.7 or P2902 of the 2000 International
Residential Code, as applicable, to any premises shall be discontinued by
the water purveyor if a backflow prevention assembly required by this
ordinance is not installed properly, tested and maintained, or if it is found
that a backflow prevention assembly has been removed, bypassed, or if an
unprotected cross connection exists on the premises. Service will not be
restored until such conditions or defects are corrected.
(2) If, in the judgment of the water purveyor or Building Official an
approved backflow prevention assembly is required at the
customer's/property owner's water service connection; or, within the
customer's/property owner's private water system for the safety of the
public water system, the water purveyor or the designated agent shall:
(i) Give notice in writing to the customer/property owner to install
an approved backflow prevention assembly(s) at specific
location(s) at his/her expense, and depending on the severity of the
threat to the public water supply, within the time frame required by
the City and in all instances within thirty (30) days.
(ii) In the case of any premise where, in the opinion of the water
purveyor and/or building official of the City of Lubbock, an
imminent health threat is posed due to cross connection or
potential cross connection, water service to the facility may
immediately be discontinued without prior written notice to
customer/property owner. Although the City will attempt to
provide notice as is reasonably practical, no notice shall be
required prior to discontinuance.
Backflow Ordinance
Page 7 of 16
(3) It shall be the responsibility of the customer/property owner to
have the backflow prevention assembly device tested in a timely manner,
as described in this ordinance. The backflow prevention assembly shall be
repaired, overhauled, or replaced at the expense of the customer/property
owner whenever said assemblies are found to be defective. Water service
shall not be restored until repairs are complete.
( 4) Failure, refusal or inability on the part of the customer/property
owner to install, have tested and maintain the backflow prevention
assembly(s) shall be grounds for discontinuing water service to the
premises until such requirements have been met as required by this
ordinance.
(5) Any reduction in water pressure caused by the installation of
backflow prevention assembly devices shall not be the responsibility of
the City.
(b) Responsibilities of the Customer/Property Owner.
The customer's/property owner's system shall include those parts of the
potable water conveyance facilities beyond the termination of the utility
distribution system that are conveying potable water to the points of use of
customer/property owner.
(1) Backflow prevention assemblies shall be installed within the
customer's/property owner's system at the customer's/property owner's
expense at any time required by Sections 6-100.1, 6-100.2, or 6-100.3 of
the Code of Ordinances of the City of Lubbock and/or Sections 312.9 or
608 of the 2000 International Plumbing Code, or Sections P2503.7 or
P2902 of the 2000 International Residential Code, as applicable. All
backflow prevention devices must be installed and tested as required by (i)
Section 6-100.1, Section 6-100.2, and Section 6-100.3 of the Code of
Ordinances of the City of Lubbock; and (ii) Section 312.9 and Section 608
of the 2000 International Plumbing Code; and (iii) 30 TAC 290.44(h) and
30 TAC 290.47(i).
(2) It shall be the responsibility of the customer/property owner to
verify that all applicable City plumbing and/or irrigation permits are
obtained and that the customer/property owner, or licensed plumber or
irrigator, as applicable, is in compliance with all of the provisions of
those permits. In addition to the remedies provided herein, in the event
the backflow prevention assembly is installed by a licensed professional,
failure by such licensed professional to follow the provisions of such
pennit will result in written notice to the applicable state licensing
agency, in addition to being a violation of this ordinance.
Backflow Ordinance
Page 8 of 16
(3) It shall be the responsibility of the customer/property owner to
send to the City the backflow prevention assembly test and maintenance
records. These materials shall be delivered to the Building Inspection
Office of the City within ten (1 0) days of installation of the backflow
prevention assembly. Upon receipt, the record will be forwarded by the
Building Inspection Office of the City of Lubbock to the water purveyor
for annual record keeping.
(4) The customer'slproperty owner's system shall be open for
inspection at all reasonable times to authorized representatives of the City
to detennine whether cross connections, potential cross connections or
other structural or sanitary hazards, including violations of Sections 6-
100.1, 6-100.2, or 6-100.3 of the Code of Ordinances of the City of
Lubbock and/or Sections 312.9 or 608 of the 2000 International Plumbing
Code, or Sections P2503.7 or P2902 of the International Residential Code,
as applicable, exist.
(5) If the customer or premise wherein potable water from the City is
supplied or provided has an auxiliary water supply that is treated to a
lesser degree than the public water supply or if the water quality is
unknown, the public water system shall be protected against backflow or
backsiphonage by an approved backflow prevention device. The
described threat shall be deemed a health hazard when determining the
type of approved backflow required. If the auxiliary water supply is used
for irrigation purposes, the backflow assembly shall be subject to the
requirements of 30 TAC 344. 75( c), as same may be amended from time to
time.
( 6) In the event industrial fluids, any material dangerous to health or
any other objectionable substances are handled in such a fashion as to
create an actual or potential hazard to the public water system, such
condition shall be deemed a health hazard. The public water system shall
be protected against backflow from the premises by installing an air gap, a
reduced pressure principle backflow assembly, or such other backflow
assembly device as may be required by 30 TAC 290.47(i), as same may be
amended from time to time. See Attachment "A", incorporated herein and
made a part hereof for all purposes.
(7) All new installations of fire suppression systems or fire
suppression systems that are updated during the rehabilitation of a
building that utilize the City's public water supply shall have installed an
approved backflow prevention device according to the degree of hazard
that exists as determined by Section 6-100.2 of the Code of Ordinances of
the City of Lubbock. Upon the approved installation of the backflow
prevention assembly, a cross connection test report completed by a
Backflow Ordinance
Page 9 of 16
licensed fire-line tester must be provided to the City as required by Section
6-1 00 .2(b )(3 ), above.
(8) Subject to the conditions of this Section 6-1 00.2(b )(8), an
approved double check valve backflow prevention assembly or reduced
pressure assembly shall be the minimwn protection for fire hydrant water
meters which are being used for a temporary water supply during
construction or other uses which may pose a potential hazard to the public
water supply. A reduced pressure principle backflow assembly must be
installed if any solution, or liquid, other than the potable water, has the
potential to be introduced into the City's public water system. Only City
fire hydrant water meters with approved backflow prevention assemblies
are allowed to be used within the City limits. Failure to comply with this
Section 6-1 00.2(b )(8) will result in the fire hydrant meter being removed
from the premise by the water purveyor.
(9) It shall be the duty of the customer/property owner at any premises
where backflow prevention assemblies are installed to have certified
inspections and operational tests made upon installation and at least once
every three years in non-health hazard conditions. In those instances
where the water purveyor and/or building official of the City deems the
potential backflow to be a health hazard or a potential health hazard,
certified inspections shall be required annually or at more frequent
intervals as deemed necessary by the water purveyor. All inspections and
tests of backflow prevention assemblies shall be at the expense of the
customer/property owner and shall be performed by a backflow tester who
is licensed with the Texas Commission on Environmental Quality and
registered with the water purveyor and meeting all conditions and criteria
of Section 6-100.1, Section 6-100.2, and Section 6-100.3 of the Code of
Ordinances of the City of Lubbock.
SECTION 5. THAT the Code of Ordinances of the City of Lubbock, Texas, is
hereby amended by adding a new Section to be numbered Section 6-100.3, which said
Section shall read as follows:
Sec. 6-100.3. Approved Backflow Prevention Device Assembly and
Installation.
(a) Any backflow prevention device required by Sections 6-100.1, 6-
100.2, or 6-100.3 of the Code of Ordinances of the City of Lubbock, or
Section 312.9 or 608 of the 2000 International Plumbing Code, or Sections
P2503.7 or P2902 of the International Residential Code, as applicable,
shall be of a model and size approved by the water purveyor/building
official or as approved by 30 TAC 290.47(i), as same may be amended
from time to time. Backflow prevention devices must be approved by the
City prior to installation. The City shall determine the type and location of
Backflow Ordinance
Page 10ofl6
the backflow prevention assembly to be installed within the area served by
the public water system.
(b) The term approved backjlow prevention assembly shall mean a
back.flow prevention assembly that has been manufactured in full
conformance with the standards specified within the 2000 International
Plumbing Code and those established by the American Water Works
Association (A WW A) titled:
A WW A C51 0 Standard for Double Check Valve Backflow-
Prevention Assembly, and A WW A CSll Standard for Reduced-Pressure
Backflow-Prevention Assembly, and have met completely the laboratory
field performance specifications of the Foundation for Cross-Connection
Control and Hydraulic Research (FCCHR) and the University of Southern
California (USC), "Specification of Backflow-Prevention Assemblies" -
Sec. 1 0 of the most current issue of the Manual of Cross-Connection
Control.
(c) Backflow prevention devices shall be installed in a manner
designed to facilitate ease of testing and inspection by the City or any
certified general tester.
SECTION 6. THAT violation of any provision of this Ordinance shall be deemed
a misdemeanor punishable as provided by Section 1-4 of the Code of Ordinances of the
City of Lubbock. Additionally, a violation of any provision of this Ordinance shall be
deemed to be a nuisance under Section 12-lOl(b) of the Code of Ordinances of the City
of Lubbock. Notwithstanding the above, in the event a violation results in an imminent
risk to human health, safety or welfare, the City may immediately discontinue water
service to the subject facility without notice. Notwithstanding the right to immediately
discontinue water service without notice, as described herein, the City will attempt to
provide notice as is reasonably practical under the circumstances presented. The City
will provide customer with necessary information to properly reinstate service.
SECTION 7. THAT should any paragraph, section, sentence, phrase, clause or
word of this ordinance be declared unconstitutional or invalid for any reason, the
remainder of this Ordinance shall not be affected thereby.
SECTION 8. THAT the City Secretary is hereby authorized and directed to cause
publication of the descriptive caption of this Ordinance as an alternative method of
publication provided by law.
SECTION 9. THAT this Ordinance shall become effective from and after its
publication as provided by law.
Back:flow Ordinance
Page 11 of 16
AND IT IS SO ORDERED
Passed by the City CoWlcil on first reading the 13th day of January , 2000-
Passed by the City CoWlcil on second reading the 27th day of January , 2001i5.
~YOR
ATTEST:
~d4.A-e ~
Rebecca Garza, City~~
APPROVED AS TO CONTENT:
T~~
Director of Public Works -
APPROVED AS TO FORM:
/.:,fG?"='--~ Richard Casner
First Assistant City Attorney
as/CityAtt!IOchardlbackflow Ord_nov19
Backflow Ordinance
Page 12of16
Ordinance No. 2005-ooool
Attachment "A"
Approved devices and health relationships
1 Figure: 30 TAC §290.47(i)
I
Appendix 1: Assessment of Hazards and Selection of Assemblies
The following table lists many common hazards. It is not an all-inclusive list of the hazards which
may be found connected to
public water systems.
Premises Isolation-Description of Premises
Aircraft and missile plants
Animal feedlots
Automotive plants
Breweries
Canneries, packing houses and rendering plants
Commercial car wash facilities
Commercial laundries
Cold storage facilities
Connection to sewer pipe
Dairies
Docks and dockside facilities
Dye works
Food and beverage processing plants
Hospitals, morgues, mortuaries, medical clinics, dental
clinics, veterinary clinics, autopsy facilities, sanitariums,
and medical labs
Metal manufacturing, cleaning, processing, and
fabrication plants
Microchip fabrication facilities
Paper and paper products plants
Back.flow Ordinance
Page 13 of 16
Assessment of Hazard Required Assembily
Health RPBAorAG
Health RPBAorAG
Health RPBAorAG
Health RPBAorAG
Health RPBAor AG
Health RPBAor AG
Health RPBAorAG
Health RPBAorAG
Health RPBAor AG
Health RPBAorAG
Health RPBAorAG
Health RPBAorAG
Health RPBAor AG
Health RPBAorAG
Health RPBAor AG
Health RPBAorAG
Health RPBAor AG
Petroleum processing or storage facilities
Photo and film processing labs
Plants using radioactive material
Plating or chemical plants
Pleasure-boat marinas
Private/lndividuai/Unmonitored Wells
Reclaimed water systems
Restricted, classified or other closed facilities
Rubber plants
Sewage lift stations
Sewage treatment plants
Slaughter houses
Steam plants
Tall buildings or elevation differences where the highest
outlet is 80 feet or more above the meter. The City of
Lubbock will require a DCVA on any multi-story building.
Internal Protection -Description of Cross
Connection
Aspirators
Aspirator (medical)
Autoclaves
Autopsy and mortuary equipment
Bedpan washers
Connection to industrial fluid systems
Connection to plating tanks
Connection to salt-water cooling systems
Connection to sewer pipe
Backflow Ordinance
Page 14 ofl6
Health RPBAorAG
Health RPBAor AG
Health RPBAorAG
Health RPBAorAG
Health RPBAorAG
Health RPBAorAG
Health RPBAor AG
Health RPBAor AG
Health RPBAorAG
Health RPBAorAG
Health RPBAorAG
Health RPBAorAG
Health RPBAorAG
Nonhealth DCVA
Assessment of Hazard Required Assem y
Nonhealtht AVB
Health AVB or PVB
Health RPBA
Health AVBor PVB
Health AVB or PVB
Health RPBA
Health RPBA
Health RPBA
Health AG
II
Cooling towers with chemical additives
Cuspidors
Degreasing equipment
Domestic space-heating boiler
Dye vats or machines
Fire-fighting system
(toxic liquid foam concentrates)
Flexible shower heads
Heating equipment
Commercial
Domestic
Hose bibbs
Irrigation systems
with chemical additives
without chemical additives
Kitchen equipment -Commercial
Lab bench equipment
Ornamental fountains
Swimming pools
Private
Public
Sewage pump
Sewage ejectors
Shampoo basins
Specimen tanks
Steam generators
Steam tables
Sterilizers
Tank vats or other vessels containing toxic substances
Backflow Ordinance
Page 15 of 16
Health AG
Health AVB or PVB
Nonhealtht DCVA
Nonhealtht RPBA
Health RPBA
Health RPBA
Nonhealtht AVB or PVB
Nonhealtht RPBA
Nonhealtht DCVA
Nonhealtht AVB
Health RPBA
Nonhealtht DCVA, AVB, or P B
Nonhealtht AVB
Health or Nonhealtht AVB or PVB
Health AVB or PVB
Nonhealtht PVB orAG
Nonhealtht RPBAor AG
Health AG
Health AG
Nonhealtht AVB
Health AVB or PVB
Nonhealtht RPBA
Nonhealtht AVB
Health RPBA
Health RPBA
Trap primers Health AG
Vending machines Nonhealtht RPBAor PVB
Watering troughs Health AG orPVB
NOTE: AG =air gap; AVB =atmospheric vacuum breaker; DCVA =double check valve backflow
prevention
assembly; PVB = pressure vacuum breaker; RPBA = reduced-pressure principle backflow
prevention assembly.
*AVBs and PVBs may be used to isolate health hazards under certain conditions, that is,
backsiphonage situations.
Additional area of premises isolation may be required.
twhere a greater hazard exists (due to toxicity or other potential health impact) additional area
protection
with RPBAs is required.
Backflow Ordinance
Page 16 ofl6