THE CONSOLIDATED MUTUAL WATER COMPANY
CROSS CONNECTION CONTROL PROGRAM
1.0 Legislative Intent.
It is the intent of THE CONSOLIDATED MUTUAL WATER COMPANY to protect the COMPANY water system from contamination or pollution by backflow from a Stockholder’s internal plumbing system or private water source, and to provide for the maintenance of a continuing program of backflow prevention, which will systematically prevent the contamination or pollution of the COMPANY water system.
Per Colorado State Regulation 11.39, THE CONSOLIDATED MUTUAL WATER COMPANY has the responsibility to implement a backflow prevention program in accordance with this regulation and for enforcement thereof. If a backflow preventer is required at the COMPANY water service connection or any specific hazard on the property, for the protection of the COMPANY water system, the Backflow Prevention Department shall give notice in writing to the Stockholder or designee to install an approved backflow preventer at each service connection to the premises or each individual hazard. The Stockholder shall install an approved backflow preventer at the Stockholder’s sole expense. Backflow preventers must be installed by a licensed plumber and in accordance with the manufacturer’s specifications. Adequate drainage is required to prevent possible damages caused by any water discharge from the backflow preventers. Backflow preventers must be tested by an ASSE or ABPA certified backflow tester upon installation, repair, maintenance, and at least once per year. New or replacement backflow preventers must be tested with an authorized COMPANY representative present to witness the initial backflow test. The Consolidated Mutual Water Company is in no way liable for any damages resulting from the installation, testing, repair, malfunction, or correction of a backflow preventer.
When not otherwise clearly indicated by the context, the following words and phrases have the meanings described below:
A Gap – the unobstructed vertical distance through the free atmosphere between the lowest opening from any supplying pipe, faucet, tank, plumbing fixture, or other device and the flood level rim of the receiving vessel. An approved air-gap will be at least double the diameter of the supply pipe, measured vertically, above the top rim of the vessel; and, in no case less than one inch. When an air-gap is used at the service connection to prevent the contamination or pollution of the potable water system, an emergency bypass shall be installed around the air-gap system and an approved reduced pressure principle assembly will be installed in the bypass system.
Approved – accepted by the COMPANY as adequate backflow protection. All backflow prevention assemblies must be lead-free and meet the laboratory & field performance specifications of the Foundation for Cross-Connection Control and Hydraulic Research (FCCHR) of the University of Southern California, which is hereby adopted by reference as the COMPANY laboratory and field performance specifications.
Auxiliary Water Supply – any water supply on or available to the premises other than the COMPANY potable water supply. These auxiliary waters may include water from another purveyor’s potable water supply, natural sources (i.e. a well, spring, river, stream, pond, lake, etc.), “used waters”, or industrial fluids. These waters may be polluted, contaminated, or may be objectionable and constitute an unacceptable water source over which the COMPANY does not have sanitary control.
Backflow – the undesirable reversal of flow of water, liquids, mixtures, gases, or other substances into the distributing pipes of the COMPANY potable water system from any source(s) by backpressure and/or backsiphonage.
Backpressure – the backflow of fluids caused by a pump, elevated tank, thermal expansion, or other means that could create pressure within the Stockholder’s internal system that are greater than the COMPANY supply pressure.
Backflow Preventer – any device, method, assembly, or type of construction designed to prevent backflow.
Backflow Prevention Department – the person(s) appointed by the President of the COMPANY to enforce and supervise the compliancy of the applicable COMPANY water service accounts to the regulations set forth by the Colorado Department of Public Health and Environment.
Backsiphonage – the backflow of fluids caused by a negative atmospheric pressure. This can occur in a potable distribution system when experiencing heavy consumption demands (i.e firefighting, main breaks, main flushing, etc.).
Certified Backflow Tester – any person who has passed an ASSE (American Society of Sanitary Engineering) or ABPA (American Backflow Prevention Association) backflow tester exam, and who is listed by ASSE or ABPA as a certified tester. The certified backflow tester must submit a copy of their certification along with their gauge calibration before testing any backflow preventer within the CMWC service area to the Backflow Prevention Department. The certified backflow tester must abide by any and all CMWC policies and submit copies of their tester certification and test kit calibration after each re-certification to maintain an active status within the CMWC service area. CMWC reserves the right to perform random testing on any assemblies and to refuse tests from any certified backflow tester who has not displayed honest and appropriate testing and/or reporting.
Check Valve – a self-closing device which is designed to permit the flow of fluids in one direction and to close if there is a reversal of flow. Check Valves are not considered backflow preventers.
Colorado Cross-Connection Control Manual – a manual published by the CDPHE addressing cross-connection control practices.
COMPANY and CMWC – The Consolidated Mutual Water Company.
Compliance Period – the allowable time between a failed survey and the installation, testing, correction, and/or repair of a backflow preventer must be completed or ready for inspection by an authorized CMWC Backflow Prevention Department representative. Compliance Period may also refer to scheduling an inspection or survey for a property.
Contaminant – any substance that could impair the quality of water to a degree which would create a hazard to public health.
Critical Level – the C-L or C/L marking on a backflow preventer that determines the minimum elevation above the flood level rim of the fixture or downstream uses at which the backflow preventer may be installed. When a backflow preventer does not bear a critical level marking, the bottom of the backflow preventer shall constitute the critical level.
Cross-Connection – any physical arrangement whereby the COMPANY water supply is connected, directly or indirectly, with any other water system, sewer, drain, conduit, pool, storage reservoir, plumbing fixture, or other device which contains, or may contain, contaminated water, sewage, or other waste or liquid of unknown or unsafe quality which may be capable of imparting contamination to the COMPANY water supply as a result of backflow. Bypass arrangements, jumper connections, removable sections, swivel or changeover devices, and other temporary or permanent devices through which, or because of which, backflow could occur are considered to be cross-connections.
Cross-Connections, controlled – any cross-connection between a potable water system and a nonpotable or potentially nonpotable supply that poses a health or pollution hazard which is adequately protected by a properly installed and approved backflow preventer that will continuously protect the COMPANY potable water system for the degree of hazard.
DOMESTIC Backflow Preventer – a lead-free Reduced Pressure Principle Assembly (RP) that conforms to ASSE standard 1013 unless a variance has been granted by the Backflow Prevention Department in writing.
Double Check Valve Assembly (DC) – an approved assembly of (2) independently operating check valves, (2) tightly closing shut off valves, and (4) properly located test cocks for the testing of the DC assembly. A variance must be granted by the CMWC Backflow Prevention Department in writing before a DC can be accepted as adequate backflow protection. DC assemblies must be readily accessible for in-line testing and maintenance.
Double Check Detector Assembly (DCDA) – a specially designed assembly composed of a line-size approved DC with a protected bypass containing a specific water meter. The meter shall register accurately for rates of flow up to 2gpm and shall show a registration for all rates of flow. A variance must be granted by the CMWC Backflow Prevention Department in writing before a DCDA can be accepted as adequate backflow protection. DCDA assemblies must be readily accessible for in-line testing and maintenance.
FIRE LINE Backflow Preventer – a lead-free Reduced Pressure Detector Assembly (RPDA) that conforms to ASSE standard 1047 unless a variance has been granted by the Backflow Prevention Department in writing.
Flood Level Rim – the top edge of a receiving vessel from which water can overflow.
Gauge Calibration – any gauge used to test backflow preventers in the CMWC service area which must be calibrated annually. A copy of the calibration must be submitted via email to the Backflow Prevention Department after each calibration in order to maintain an active status within the CMWC service area.
Hazard, degree of – evaluation of risks to public health from materials which could come in contact with the COMPANY distribution system through a cross-connection.
Hazard, health – an actual or potential threat of impairment to the quality of water within a potable water system to a degree that could create or, in the judgment of the Backflow Prevention Department, may create a hazard to public health and wellbeing.
Hazard, pollution – an actual or potential threat of impairment to the quality of water within a potable water system to a degree which does not create a hazard to public health but would affect the aesthetic qualities for domestic use.
Industrial Fluids System – any fluid or solution which may be chemically, biologically, or otherwise contaminated or polluted in any form or concentration which would constitute a hazard if introduced into the COMPANY potable water system.
Nonpotable water – water that is not safe for human consumption or is of questionable potability.
Pollution – any substance that could impair the quality of water to a degree which would affect the aesthetic water qualities (i.e. taste, odor, color) but would not constitute a hazard to public health.
Potable Water – water sources that has been investigated by the Colorado Department of Health & Environment and has been approved for human consumption.
Pressure Vacuum Breaker (PVB) – an assembly with an independently operating internally loaded check valve and an independently operating loaded air-inlet valve located on the discharge side of the check valve. Temporary variances may be granted by the Backflow Prevention Department for existing PVB’s that are properly installed, though a lead-free Reduced Pressure Principle Assembly would be required in the event that the existing PVB needed extensive repair or replacement.
Reduced Pressure Principle Assembly (RP) – an assembly of (2) independently operating approved check valves with an automatically operating differential relief valve between the (2) check valves, tightly closing shut-off valves on either side of the check valves, plus properly located test cocks for the testing of the check and relief valves. The assembly will operate to maintain the pressure in the zone between the (2) check valves at a level less than the pressure on the COMPANY water supply side of the assembly. In case of leakage of either of the check valves, the differential relief valve will operate to maintain the reduced pressure in the zone between the check valves by discharging to the atmosphere. Before the pressure between the check valves is within 2psi of the inlet pressure, the relief valve will open to the atmosphere. RP assemblies must be readily accessible for in-line testing and maintenance and must be installed in a location where no part of the assembly will be submerged.
Reduced Pressure Detector Assembly (RPDA) – a specially designed assembly composed of a line-size approved RP with a protected bypass containing a specific water meter. The meter shall register accurately for rates of flow up to 2gpm and shall show a registration for all rates of flow. RPDA assemblies must be readily accessible for in-line testing and maintenance and must be installed in a location where no part of the assembly will be submerged.
Submerged Inlet – a water pipe or extension thereto from the public water supply terminating in a tank, vessel, fixture or appliance which may contain water of questionable quality, waste or other substances and which is unprotected against backflow.
Vacuum – any pressure less than that exerted by the atmosphere.
Vacuum Breaker, Atmospheric (AVB) – a non-testable vacuum breaker designed so as not to be subjected to static line pressure or installed where it would be under pressure over twelve (12) hours in any twenty-four-hour period. AVB’s are never approved for use as containment and/or containment by isolation backflow protection.
Water Service Connection – the terminal end of the COMPANY service connection from the COMPANY water system, i.e., at the Stockholder’s stop box shut-off valve or meter. If a meter is installed at the end of the service connection, then the service connection means the downstream end of the meter. There will be no unprotected takeoffs from the service line ahead of any meter or backflow preventer located at the point of delivery to the Stockholder’s water system. Service connection will also include water service connections from a fire hydrant and all other temporary or emergency water service connections from the COMPANY potable water system.
2.0 Water System.
The COMPANY water system consists of the source and distribution facilities of the water system to the point of the Stockholder’s system. The source includes all components of the facilities utilized in the production, treatment, storage, and delivery of water to the distribution system. The distribution system includes the network of pipelines used for the delivery of water from the source to the Stockholder’s system. The Stockholder’s system begins at the water service connection.
A. An approved backflow preventer will be installed at or near the property line or immediately inside the structure being served; but, in all cases, before the first branch leading off the service line, or at a specific hazard wherever any of the following conditions exist:
- It is a commercial property where potential or existing hazards are present.
- It is a multi-family residential property of 3 or more units on one water meter where potential or existing hazards are present.
- It is a residential house which is operating a business out of the property or has been recorded by the county as being owned by the company where potential or existing hazards are present.
- It is a multi-family or commercial property with a fire suppression system.
- It is any property utilizing COMPANY water service for agricultural activities (i.e. growing crops, rearing livestock) where potential or existing hazards are present.
- It is any property utilizing COMPANY water service where a known and unprotected hazard has been observed.
- In the case of premises having an auxiliary water supply which is not or may not be of safe bacteriological or chemical quality and which is not acceptable as an additional source by the Backflow Prevention Department.
- In the case of premises in which any industrial fluids or any other objectionable substance is handled in such a fashion as to create an actual or potential hazard to the COMPANY water system. This will include the handling of process waters and waters originating from the COMPANY water system which have been subject to deterioration in quality.
- In the case of premises having internal cross-connections that cannot be permanently corrected and controlled, or having 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 dangerous cross-connections exist.
- In the case of construction or other projects that utilize the COMPANY water system and/or appurtenances to the COMPANY water system.
B. Complete lists of approved backflow preventer models are available upon request through the Backflow Prevention Department when provided with the connection size and orientation needed. Backflow tester reference lists are also available upon request.
C. Backflow preventers are to be installed in an accessible and safe location to facilitate inspection, testing and maintenance. Adequate drainage must be provided in the event that water is discharged at minimum and maximum rates.
D. Approved backflow preventers shall be installed by a licensed plumber in accordance with the manufacturer’s specifications, though in no case shall the assembly be installed less than 12” above the surrounding ground or floor and only in the USC approved orientation. Applicable backflow preventers must also maintain a proper air gap at least 2X the connection size, but no less than 1-inch, between the bottom of the assembly and any drainage flood level rims.
E. RP and RPDA backflow preventers shall not be installed in areas with hazardous gasses, extreme temperatures, underground, or in pits of any kind.
F. In the case of a property required to install a backflow preventer where an unauthorized tap has also been discovered in the CMWC meter pit, the removal of the unauthorized tap will be required in addition to the backflow preventer installation. The removed tap can be reinstalled into the Stockholder’s plumbing system a minimum of 5ft downstream from the CMWC meter pit. NO soldering is permitted when making these corrections in the meter pit, which must have a final inspection and receive approval from an authorized CMWC representative.
G. Please be advised, the installation of a backflow preventer will create a closed plumbing system and any backpressure created within a property’s internal plumbing system may cause excess stress on the piping and/or plumbing fixtures.
H. An authorized CMWC employee must be present to witness the initial testing of all new or replacement backflow preventers for containment or containment-by-isolation protection.
2.2 Surveys, Testing, and Repairs.
A. The Backflow Prevention Department must conduct official onsite surveys for all applicable water service accounts to determine whether the COMPANY water system is at risk or has the potential to be at risk of any contaminants or pollutants entering the COMPANY water supply from backpressure and/or backsiphonage. Accounts without the highest level of backflow protection at the service line are required to be reinspected every 2-5 years, though the COMPANY reserves the right to reinspect any water service account at its discretion.
B. Should the Backflow Prevention Department determine a water service account poses an actual or potential risk to the COMPANY water system, the Stockholder shall complete all required backflow preventer installations and/or corrections at their sole expense within the given compliancy period.
C. It is the responsibility of the Stockholder to have all backflow preventers tested by an ASSE or ABPA certified backflow tester upon installation and at least once per year thereafter, as well as after any repairs or maintenance are made to the assembly (tester reference list available upon request). The Backflow Prevention Department may require testing at more frequent intervals.
D. Annual test due dates will not be altered based on delinquent testing. Stockholder’s can request due date changes through the Backflow Prevention Department so long as the backflow preventer(s) had passing test results the previous calendar year.
E. Required irrigation backflow prevention assemblies must be tested at the beginning of spring each year to ensure the internal components will work correctly throughout the season.
F. A backflow preventer will be repaired or replaced at the expense of the Stockholder whenever it is found to be defective within CMWC’s compliancy period of 10 business days unless a variance request has been approved. Repairs must only be made with manufacturer and model specific repair parts
G. Accounts that are delinquent on any backflow requirements will have the water service discontinued until the contractor contacts the Backflow Prevention Department directly to verify when the account is expected to be in compliance via phone (303-274-7433) or email (Backflow@cmwc.net) between 7AM-3PM Monday-Friday before water service will be restored.
The standard compliancy periods are as follows:
- Survey: By or before the ‘Due Date’ stated on the CMWC survey request notice
- Installation: Within 60 days of a failed inspection
- Testing: Annually, upon installation, and after any repairs
- Repair: Within 10 business days of a failed backflow test or assembly malfunction
**Noncompliance with any backflow requirements will result in the termination of water service**
4.0 Reporting and Record-Keeping.
A. The certified backflow tester must submit all testing results through our online portal (cmwc.tokaytest.com) and to the property Stockholder. Testers can set up an online account by contacting the Backflow Prevention Department. Test results must be submitted within 5 days following the completion of a passing test or maintenance of a backflow preventer. The certified backflow tester shall also attach a card/tag to the backflow preventer following each test or maintenance activity to document and date the activities performed. Records of all tests or maintenance activities, including materials and parts changed, shall be kept by the certified backflow tester, the property Stockholder, and the Water Distribution Manager for a period of not less than three years.
B. Verbal or written notification must be given to the Backflow Prevention Department by the end of the business day for all failed containment or containment by isolation tests via phone (303-274-7433) or email (Backflow@cmwc.net). The failed reports must be submitted online within 3 days of the failed test.
C. All repairs must be completed within 10 business days and the assembly retested to avoid interruption in water services. The Backflow Prevention Department reserves the right to expedite the repairs due to the degree of hazard of which the backflow preventer is protecting.
5.0 Backflow Preventers.
- Any backflow preventer required herein will be of a model and size approved by the Backflow Prevention Department (full lists available upon request).
- Backflow preventers currently installed which are not approved shall be replaced with a lead-free USC approved Reduced Pressure Principle Assembly within 60 days of notification.
- The following testing laboratory has been qualified by the Backflow Prevention Department to test and certify backflow preventers:
Foundation for Cross-Connection Control and Hydraulic Research
University of Southern California
Los Angeles, CA 90089-0231
- Testable backflow preventers that may be subjected to backpressure or backsiphonage that have been fully tested and have been granted a certificate of approval by said qualified laboratory and are listed on the laboratory’s current list of “Approved Backflow Prevention Assemblies,” as well as newly installed approved backflow preventers which have been inspected and installed to the satisfaction of the Backflow Prevention Department are deemed to be in compliance with this program. Compliancy confirmation letters are available upon request.
ENFORCEMENT AND NONCOMPLIANCE
Any person or company who violates this program or CDPHE regulations shall be subject to the termination of water service until such time that the violation has been corrected and inspected by an authorized representative of the Backflow Prevention Department.
**All variance requests must receive approval from the Backflow Prevention Department in writing**