HomeMy WebLinkAboutORD 4312Amended By ORO 4723 (Tr.to Title IV.Ch 6:
CITY OF RENTON,WASHINGTON
ORDINANCE NO.4312
AN ORDINANCE OF THE CITY OF RENTON,WASHINGTON,AMENDING
CHAPTER 4,WATER,OF TITLE VIII (HEALTH &SANITATION),OF
ORDINANCE NO.4260 ENTITLED "CODE OF GENERAL ORDINANCES
OF THE CITY OF RENTON,WASHINGTON"BY ADDING A NEW
SECTION RELATING TO CROSS COHHECTION CONTROL.
THE CITY COUNCIL OF THE CITY OF RENTON,WASHINGTON,DO ORDAIN
AS FOLLOWS:
SECTION 1.Chapter 4,water,of Title VIII (Health &
Sanitation),~f Ordinance No.4260 entitled "Code of General
Ordinances of the City of Renton,Washington"is hereby amended by
adding the following section:
Section 8-4-45:CROSS CONNECTION CONTROL:
A.Purpose.National standards of safe drinking water
have been established.The City of Renton,as a water purveyor,
has the primary responsibility for preventing water from unapproved
sources,or any other substances,from entering the public potable
water system.
This ordinance is to protect the health of the water
consumer and the potability of the water in the distribution
system.This is accomplished by eliminating or controlling all
actual (direct)and potential (indirect)cross connections between
potable and non-potable systems through the use of approved
backflow prevention assemblies.
B.Definitions.
AIR GAP:A physical vertical separation through the
free atmosphere sufficient to prevent backflow between the free
flowing discharge end of the potable water system and the overflow
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ORDINANCE NO.4312
level of the receiving vessel,tank,plumbing fixture or any other
system.Physically defined as a distance greater than or equal to
twice the diameter of the supply pipe diameter,but in no case less
than one inch.
APPROVED:Approved in writing by the Department of
Health or other agency having jurisdiction.
ATMOSPHERIC VACUUM BREAKER:An assembly which
prevents back siphonage by creating an atmospheric vent when there
is either a negative pressure or subatmospheric pressure in the
water system.It is designed to protect against back siphonage
only.
AUXILIARY SUPPLY:Any water source or system on or
available to the premises other than the purveyor approved potable
water supply.
BACKFLOW:The flow of water or any other liquid,gas
or substance from any source back into the distribution pipes of
the potable water supply system.
BACKPRESSURE:Backflow caused by a pump,elevated
tank,boiler,or other means that could create pressure within the
system greater than the potable water supply system.
BACKSIPHONAGE:The flow of water or any other
liquid,gases or substances from any source back into the
distribution pipes of the potable water supply system caused by the
reduction of pressure in the potable water supply system.
BACKFLOW PREVENTER:An approved assembly which
prevents the backflow of water or any other liquid,gas,or
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ORDINANCE NO.4312
substance from any source back into the distribution pipes of the
potable water supply system.
BAROMETRIC LOOP:A fabricated piping arrangement
rising at least thirty-five (35)feet at its topmost point above
the highest fixture it supplies.It is used in water supply
systems to protect against backsiphonage only.
CONTAMINANT:A substance that will impair the
quality of the water to a degree that it creates a serious health
hazard.
CROSS CONNECTION:Any physical or potential
arrangement whereby a public water system is connected,directly or
indirectly,with any other non-potable water system,drain,sewer,
conduit,pool,storage reservoir,plUmbing fixture,or other device
which contains,or may contain,contaminated water,sewer,or other
waste liquid of unknown or unsafe quality which may be capable of
imparting contamination to the pUblic water system as a result of
backflow.Bypass arrangements,jumper connections,removable
sections,swivel or change-over devices,or other temporary or
permanent devices through which backflow may occur are considered
to be cross connections.
DOUBLE CHECK VALVE ASSEMBLY:An approved assembly
composed of two single,independently acting check valves,either
spring loaded or internally weighted,installed as a unit between
two tightly closing shutoff valves and having suitable connections
for testing.
HEALTH HAZARD:A physical or toxic hazard which
could be dangerous to health.
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ORDINANCE NO.4312
REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER:An
is safe for human
health authority having
assembly consisting of two independently acting spring operated
check valves,separated by a spring loaded differential pressure
relief valve,which is installed as a unit between two tightly
closing shutoff valves and having suitable connections for testing.
POLLUTION:A hazard which could cause aesthetic
problems or have a detrimental effect on the quality of water in
the potable system.
POTABLE WATER:Water which
as described by "the publicconsumption,
jurisdiction.
PRESSURE VACUUM BREAKER:An assembly consisting of a
spring loaded check valve and independently operating air inlet
valve,inlet and discharge shutoff valve,and properly installed
test cocks.The air inlet valve is internally loaded to the open
position,normally by means of a spring.This internal loading
allows the assembly to be installed on the pressure side of a
shutoff valve.It is designed to protect against backsiphonage
only.
C.Application.This chapter applies throughout the
water service area of the City of Renton.It applies to all
systems installed prior to or after its enactment.Therefore,
anyone wanting or using water from the City of Renton is
responsible for compliance with these regulations and shall be
strictly liable for all damage incurred as a result of failure to
comply with the express terms and provisions contained herein.
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ORDINANCE NO.4312
D.Enforcement.The Director of the Department of
Planning/Building/Public Works will administer the provisions of
the chapter.He/she will designate cross connection specialists
and propound all needful rules and regulations to implement these
provisions.The Water Utility Section of the Utility Systems
Division will be responsible for monitoring and inspecting all
existing cross connection assemblies and for keeping all records
generated by the Cross Connection Control Program.The Plan Review
Section of the Development Services Division will be responsible
for reviewing all new and revised plans for cross connections.
E.Installation of Backflow Prevention Assemblies.
Backflow prevention assemblies required by this chapter must be
installed so as to be readily accessible for maintenance and
testing.All assemblies shall be connected at the meter,the
property line when meters are not used,or within any premise
where,in the jUdgement of the City of Renton Cross Connection
Control Specialist,the nature and extent of activity on the
premises or the materials used or stored on the premises could
present a health hazard should a cross connection occur.This
includes:
1.Premises having an auxiliary water supply.
2.Premises having internal cross connections that
are not correctable,or intricate plumbing arrangements which make
it impractical to ascertain whether or not cross connections exist.
3.P.remises where entry is restricted so that
inspections for cross connections cannot be made with sufficient
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ORDINANCE NO.4312
frequency or at sufficient short notice to assure that cross
connections do not exist.
4.Premises having a repeated history of cross
connections being established or reestablished.
5.Premises on which any substance is handled
under pressure so as to permit entry into the public water system,
or where a cross-connecting could reasonably be expected to occur.
This includes the handling of process waters and cooling waters.
6.Premises where materials of a toxic or
hazardous nature are handled such that if backsiphonage should
occur,a health hazard may result.
7.Hospitals,mortuaries,clinics.
8.Laboratories.
9.Piers and docks.
10.Sewage treatment plants.
11.Food or beverage processing plants.
12.Chemical plants using a water process.
13.Metal plating industries.
14.Petroleum processing or storage plants.
15.Radioactive material processing plants or
nuclear reactors.
16.Car Washes.
17.Process waters or cooling towers.
18.Fire sprinkler systems.
19.Irrigation systems.
20.Solar hot water systems.
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ORDINANCE NO.4312
21.Others specified by the Director of the
Department of Planning/Building/Public Works Administrator.
F.Types of Backflow Prevention Assemblies Required.
Specific types of backflow prevention assemblies are required in
the following conditions:
1.An air-gap separation or reduced principle
backflow prevention assembly shall be installed where the water
supply may be contaminated by industrial waste of a toxic nature or
any other contaminant which would cause a health or system hazard.
2.An air gap must be used between a potable water
supply and sewer connected wastes.
3.Lawn sprinkler or irrigation systems,which are
supplied by City water only,shall be required to have a pressure
vacuum breaker.If such system contains an auxiliary pump or is
subject to chemical additives a double-check valve assembly,air-
gap separation,or a reduced pressure principle backflow prevention
assembly will be required.
G.Responsibilities of Owner and Utility.
1.Water Utilities Section.
a.The Water Utilities Section will perform
evaluations and inspections of plans/or premises of all existing
facilities and inform the owner,by letter,of any corrective
action deemed necessary,the method of achieving the correction,
and the time allowed for the correction to be made.
b.The Water Utilities Section shall insure
that all
,
backflow prevention assemblies are tested annually to
insure satisfactory operation.
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ORDINANCE NO.__4_3_1_2_
c.The Water Utilities Section shall inform
the owner,by letter,of any failure to comply by the time of the
first reinspection.An additional fifteen (15)days will be
allowed for the correction.In the event the owner fails to comply
with the necessary correction by the time of the second
reinspection,the Water Utilities Section will inform the owner,by
letter,that the water service to the owner's premises will be
terminated within a period not to exceed five (5)days.
d.If the Water Utilities Section determines
at any time that a serious threat to the pUblic health exists,the
water service will be terminated immediately and without notice.
2.Plan Review Section.On new installations
the Plan Review Section will provide on-site evaluation and/or
inspection of plans in order to determine if cross connections
exist and what type of backflow preventer,if any,will be required
before a water meter permit can be issued.
3.Owner.
a.The owner shall be responsible for the
elimination or protection of all cross connections on his property.
b.The owner,whether notified by the City or
not,shall at his expense install,maintain,and have tested by a
certified tester any and all backflow preventers on his premises.
c.The owner shall return to the City of
Renton the assembly test reports within thirty (30)days after
receipt of the yearly test notification.
d.The owner shall inform the Water Utilities
Section of any proposed or modified cross connections.
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ORO INANCE NO.4312
The owner shall install backflow
manner approved by the Washington State
e.Owners who cannot shut down operation for
testing of assemblies must provide bypass piping with an additional
backflow assembly at their expense.
f.The owner shall only install backflow
preventers which are approved by the Washington State Department of
Health.
g.
preventers only in a
Department of Health.
h.The owner may be required to install a
backflow preventer at the service entrance if a private water
source is maintained on his premises,even if it is not cross
connected to the City's system.
i.Failure of the owner to cooperate in the
installation,maintenance,repair,inspection and testing of
backflow preventers required by this ordinance shall be grounds for
the termination of water service or the requirements of an air gap
separation.
H.Annual Inspection and Testing Requirements.All
reduced pressure principle backflow assemblies,double check valve
assemblies,pressure vacuum breaker assemblies,and air gaps
installed in lieu of a backflow preventer shall be inspected and
tested annually,or more often when successive inspections indicate
failure.All inspections and testing will be performed by a
certified tester.The test reports shall be returned to the City
of Renton within thirty(30)days after receipt of the yearly test
notification.
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ORDINANCE NO.4312
SECTION II.This Ordinance shall be effective upon its
passage,approval,and thirty days after publicatioQ.
PASSED BY THE CITY COUNCIL this 13th day of
dLJrv"vw',AArTV/\N'
Marilyn
___M_a.....y~_,1991.
Clerk
APPROVED BY THE MAYOR this 13th day of f1ay ,1991.
Date of Publication:Published in Summary -May 17,1991
ORD.178:4/16/91:as.
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