03-10145 Cross Connections(Published in the Salina Journal on June Z—, 2003)
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ORDINANCE NUMBER 03-10145
AN ORDINANCE PROVIDING FOR THE AMENDMENT OF
CHAPTER 41, ARTICLE II, DIVISION 4, SECTIONS 41-70 THROUGH
41-70.9 OF THE SALINA CODE PERTAINING TO CROSS
CONNECTIONS AND REPEALING EXISTING SECTIONS 41-70
THROUGH 41-70.9.
BE IT ORDAINED by the Governing Body of the City of Salina, Kansas:
Section 1. That Sections 40-70 through 41-70.9 of Chapter 41, Article II, Division 4 of
Salina Code are hereby amended to read as follows:
"DIVISION 4. CROSS CONNECTIONS
See. 41-70. Purpose.
The purpose of this division is to protect the public water supply system of the
City of Salina from contamination due to backflow from any cross connection; to prohibit
and eliminate all cross connections between a private water supply and the public water
supply; and to provide for the maintenance of a continuing effective cross connection
control program. This program shall include regularly scheduled inspections to detect and
eliminate certain cross connections as well as to prevent any future backflow from other
regulated cross connections. The utilities department of the city shall be responsible for
conducting the cross connection control program.
Sec. 41-70.1. Definitions.
[As used in this division, the following words and terms shall have the meaning ascribed
thereto:]
Air gap. The unobstructed vertical distance at least twice the diameter of the supply
line and no less than one (1) inch, through the free atmosphere, between the lowest
opening from any pipe or faucet supplying water to a tank, plumbing fixture, or other
device and the flood level rim of a receptacle.
Approved device. Devices tested and accepted by a recognized testing laboratory
approved by the Kansas Department of Health and Environment and the utilities
department.
Backflow. The flow of water or other substances into the distribution system of a
potable supply of water from any source other than its intended source. Backsiphonage is
one type of backflow.
Backflow preventer. A device or means to prevent backflow.
Backsiphonage. The flowing back of contaminated or polluted substances from a
plumbing fixture or any vessel or source into the potable water supply system due to
negative pressure in said system.
Chemigation. Any process whereby pesticides, fertilizers or other chemicals or
animal wastes are added to the potable water system for the purpose of application to
land, crops, lawns, greenhouse vegetation or land vegetation through an irrigation system.
Contaminant. Any substance that upon entering the potable water supply would
render it a danger to the health or life of the consumer.
Cross connection. Any physical connection or arrangement between two (2)
otherwise separate piping systems, one of which contains potable water and the other
which contains water or any substance of unknown or questionable quality whereby there
may be flow from one system to the other.
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Double check valve assembly. A device consisting of two (2) internally loaded soft
seated check valves with positive shut-off valves on both upstream and downstream ends,
and properly located test ports.
Dual check valve. A device consisting of two (2) internally loaded soft seated check
valves. This device does not contain test ports and is acceptable for use only at the meter
of residential customers.
Dual check valve with atmospheric vent. A dual check valve with an atmospheric vent
which, in the event of failure of the downstream check valve, vents leakage into the
atmosphere through the vent port. This device is suitable for use with residential boilers,
sterilizers, processing tanks, and dairy equipment.
Free water surface. A water surface at atmospheric pressure.
Flood level rim. The edge of the receptacle from which water overflows.
Frostproof closet. A hopper with no water in the bowl and with the trap and water
supply control valve located below frost line.
Irrigation system. Any device or combination of devices having a hose, pipe or other
conduit which connects directly or indirectly to the city water system, through which
water is drawn and applied to land, crops, lawns, greenhouse vegetation or land
vegetation. The term does not include any hand held hose sprayer or other similar device.
KDHE. The Kansas Department of Health and Environment.
Overhaul. To examine thoroughly, with a view to repairs.
Person. Any individual, partnership, copartnership, firm, company, corporation,
association, joint stock company, trust, estate, governmental entity, or any other legal
entity or their legal representatives, agents or assigns. The singular shall include the
plural where indicated by the context.
Plumbing. The practice, materials and fixtures used in the installation, maintenance,
extension and alteration of all piping fixtures, appliances and appurtenances.
Pollution. The presence of any foreign substance (organic, inorganic or biological) in
water which tends to degrade its quality so as to constitute a hazard or impair the
usefulness or quality of the water to a degree which does not create an actual hazard to
the public health but which does adversely affect the water quality.
Private water supply. All water supplies other than the public water supply system of
the city.
Reduced pressure zone backflow preventer. An assembly of two (2) independently
acting soft seated approved check valves together with a hydraulically operating
differential pressure relief valve located between the check valves and at the same time
below the first check valve. The unit shall contain properly located test cocks and
resilient seated shut-off valves at each end of the assembly. To be approved these
assemblies must be accessible for inspection and testing and be installed in an
aboveground location where no part of the assembly will be submerged.
Tester. A trained technician licensed by the city clerk upon approval of the utilities
department to perform testing and repair of backflow preventers.
Utilities Department. The agency of the municipal government vested with the
responsibility for enforcement of the cross connection ordinances.
Vacuum. Any absolute pressure less than that exerted by the atmosphere.
Vacuum breaker. A device that permits entrance of air into the water supply
distribution line to prevent backsiphonage.
Water, potable. Water free from impurities in amounts sufficient to cause disease or
harmful physiological effects. It's quality shall conform to KDHE requirements for public
water supplies.
Water, nonpotable. Water that is not safe for human consumption or that is of
questionable potability.
Sec. 41-70.2. Prohibited cross connections.
(a) Private water supplies. No person shall establish or permit to be established or
maintain or permit to be maintained, any cross connection whereby a private
water supply may enter the public water supply system of the city.
(b) Chemigation. No person shall apply any substance by the chemigation process
through an irrigation system as defined in this division.
Sec. 41-70.3. Regulated cross connections.
Cross connections made in the following installations shall be regulated in the following
manner:
(1) Boilers. Potable water connections to boiler feed water systems in which boiler
water conditioning chemicals are or can be introduced shall be made through an
air gap or through a reduced pressure zone backflow preventer located in the
potable water line before the point where such chemicals may be introduced.
(2) Refrigeration unit condensers and cooling jackets. Except when potable water
provided for a refrigeration condenser or cooling jacket is entirely outside the
piping or tank containing a toxic refrigerant, the inlet connection shall be
provided with an approved backflow preventer. Heat exchangers used to heat
water for potable use shall be of the double wall type.
(3) Cross connections not subject to backpressure. Where a water cross connection is
not subject to back pressure, a vacuum breaker shall be installed on the discharge
side of the last valve on the line serving the fixture or equipment. A list of some
conditions requiring protective devices of this kind are given in the following
table:
Partial list of cross connections not subject to back pressure.
a. Aspirators and ejectors;
b. Commercial dish washing machine;
C. Commercial laundry machine;
d. Dental units;
e. Garbage can cleaning machines;
f. Flush tanks;
g. Hose bibs;
h. Hose outlets;
i. Steam tables;
j. Tank and vats.
(4) Cross connections subject to backpressure. Where a potable water cross
connection is made to a line, fixture, tank, vat, pump, or other equipment with a
hazard of backflow where the water cross connection is subject to backpressure,
an air gap shall be installed. Where an air gap cannot be installed, the utilities
department may require the use of an approved reduced pressure zone backflow
preventer. A partial list of such connections is shown in the following table:
Partial list of cross connections subject to back pressure:
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a. Chemical lines;
b. Dock water outlets;
C. Fire sprinkler systems;
d. Hose bibs (where hose use is above free water surface);
e. Industrial process water lines;
f. Pressure tanks;
g. Pumps;
h. Steam lines;
i. Swimming pools;
j. Tanks and vats, bottom inlets.
(5) Other cross connections. Connection to the public potable water supply system
for the following is prohibited unless properly protected by the appropriate
backflow prevention device.
a. Bidets;
b. Operating, dissecting, embalming, and mortuary tables or similar
equipment; in such installations the hose used for water supply shall
terminate at least twelve (12) inches away from every point of the table or
attachments;
C. Pumps for nonpotable substances; priming only through an air gap;
d. Building drains, sewers, or vent systems;
e. Commercial buildings or industrial plants manufacturing or otherwise
using polluting or contaminating substances;
f. Underground irrigation systems;
g. Any fixture of similar hazard.
Sec. 41-70.4. Backflow preventors.
(a) Approved devices to protect against backflow shall be installed at all existing and
newly installed fixtures and equipment where, in the judgment of the utilities
department, backflow may occur and where there is a hazard of contamination of
the public water supply system. If in the judgment of the utilities department an
approved backflow prevention device is required, or if previously installed
backflow prevention devices do not meet current requirements, the director of
utilities or his agent will give notice in writing to the customer to install the
proper device. The customer shall immediately install the proper device at the
customer's expense. Failure to comply shall be grounds for discontinuing water
service to the customer until the device is properly installed.
(b) Approved devices shall be installed at an approved location on a consumer's
water service line whenever the following conditions exist:
(1) Premises where water or any objectionable substance that would be an
actual or potential hazard to the health and well-being of consumers shall
protect the public system with an approved backflow prevention assembly
commensurate with the degree of hazard. This shall include the handling
of process water and water originating from the public water system which
has been subject to deterioration in quality.
(2) Premises where cross connections are uncontrolled shall protect the public
water supply installing an approved air gap or an approved reduced
pressure zone backflow prevention device.
(3) Premises where because of security requirements or other prohibitions it is
impossible to complete an in -plant cross connection inspection, the public
water system shall be protected by an approved air gap or an approved
reduced pressure zone backflow prevention assembly.
(c) Premises which may fall into one (1) or more of the above-mentioned categories
may be, but are not limited to the following:
(1) Beverage bottling plants;
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(2) Buildings: hotels, apartments, public or private buildings, or other
structures having actual or potential cross connections;
(3) Car wash facilities;
(4) Chemical manufacturing, handling, or processing plants;
(5) Chemically contaminated water;
(6) Dairies and cold storage facilities;
(7) Film or photography processing laboratories;
(8) Fire systems;
(9) Hospitals, medical centers, morgues, mortuaries, autopsy facilities, clinics,
or nursing and convalescent homes;
(10) Laundries;
(11) Metal cleaning, processing, or fabricating plants;
(12) Oil and gas production, storage, or transmission facilities;
(13) Packing or food processing plants;
(14) Paper and paper products plants;
(15) Power plants;
(16) Radioactive materials plants or handling facilities;
(17) Restricted or classified facilities;
(18) Rubber plants;
(19) Sand, gravel, or asphalt plants;
(20) Schools;
(21) Solar heating systems;
(22) Temporary services: fire hydrants, air valves, blow -offs and other outlets.
Sec. 41-70.5. Installation of approved devices.
When required, approved devices shall be installed by a plumbing contractor
licensed to make the installation by the city in accordance with the manufacturer's
instructions, any applicable utilities department regulations, and the Uniform Plumbing
Code or any other applicable local, state or federal laws. The owner of an owner -
occupied single-family residence may personally install the approved devices in the
owner's residence without a license, but shall not be exempt from any required permits
required testing or inspections. Backflow and backsiphonage devices of all types shall be
in an accessible location. Installation in pits or any other location not properly drained
shall be prohibited, unless dual check valves are installed in the meter box. Atmospheric
vacuum breakers shall be installed with the critical level at least six (6) inches above the
flood rim of the fixture they serve and on the discharge side of the last control valve to
the fixture. No shut-off valve or faucet shall be installed beyond the atmospheric vacuum
breaker. Pressure vacuum breakers shall be installed with the critical level at least twelve
(12) inches above the flood rim but may have control valves downstream from the
vacuum breaker. For closed equipment or vessels, such as pressure sterilizers, the top of
the vessel shall be considered the flood level rim, and a check valve shall be installed on
the discharge side of the pressure vacuum breaker.
Sec. 41-70.6. Testing, maintenance and repair of approved devices.
It shall be the responsibility of building and premises owners to maintain all
backflow preventers within the building or on the premises in good working order and to
make sure no piping or other arrangements have been installed for the purpose of
bypassing the backflow devices. The utilities department will set appropriate testing and
overhaul schedules for such devices. Testing intervals shall not exceed one (1) year and
overhaul intervals shall not exceed five (5) years for devices located within a building or
on premises having a high degree of hazard. A building or premises having a low degree
of hazard, including but not limited to one- and two-family dwellings, shall be subject to
testing intervals not to exceed five (5) years and overhaul intervals not to exceed ten (10)
years.
Sec. 41-70.7. Qualified technicians.
Testing and overhaul of all backflow preventers shall be made by qualified
technicians. Qualified technicians are those technicians who have completed a training
course and have passed a written examination approved by the utilities department. Upon
approval of the utilities department, the city clerk shall license the device testers after
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ascertaining the technician meets the above qualifications. Periodic training is required
to maintain the testers qualifications and license.
Sec. 41-70.8. Inspection.
The utilities department or other designate of the city manager shall have the right
of entry into any building or premises in the city as frequently as necessary in order to
ensure that plumbing has been installed in a manner as to prevent the possibility of
contamination of the public water supply system of the city.
Sec. 41-70.9. Protection from contaminants.
Pursuant to its home rule authority and K.S.A. 65-163a, the City of Salina, may
refuse to deliver water to any premises where a condition exists which might lead to the
contamination of the public water supply system and may continue to refuse to deliver
water until the condition is corrected to the satisfaction of the city. In addition, the city
may immediately terminate water service to a premises where a backflow condition exists
which may be hazardous to the health of customers served by the public water supply
system of the city."
Section 2. That the existing Sections 41-70 through 41-70.9 are hereby repealed.
Section 3. That this ordinance shall be in full force and effect from and after its adoption
publication once in the official city newspaper.
_ r
Arm Nicola, City Clerk
Introduced: May 19, 2003
Passed: June 2, 2003
qk. Jilka, M yor