City of Glendale Cross Connection Control Program
Administered by Mayor John Poore
Cross Connection –What’s it Mean to the Water User
1982 – A cross connection between potable water and non-potable process water at a lumber mill in Oregon was probably responsible for several cases of Giardiasis.
1989 – Eight employees of Redmond, Oregon high school reported becoming ill after the backflow of ethylene glycol occurred from the school’s air conditioning system.
1991 – Weed killer was backsiphoned into the public water system contaminating the water in 100 homes.
Because water is a natural resource, there is a tendency to believe the use of it should be unlimited and free of charge. Its use must be regulated to meet demands and its purity must be diligently protected to prevent pollution or contamination. One of the most effective means of doing this is through an active cross connection control program.
The government of the United States, through the Environmental Protection Agency (EPA), MANDATES THAT ALL SUPPLIERS OF DRINKING WATER PROVIDE AND MAINTAIN CLEAN, SAFE DRINKING WATER. This was done in 1980 through an act of congress called the federal Safe Drinking Water Act (SDWA) which places a great deal of responsibility on water suppliers or purveyors. Following this, the State adopted Oregon Administrative Rules 333-61-070 which state: “Water suppliers shall undertake programs for controlling and eliminating cross connections.” Towards that end the City of Glendale established a Cross-Connection Control Program under Ordinance number 319. The City’s complete Cross-Connection Program identifies actual or potential Cross Connections between the potable water supply lines and any pipe or vessel that may contain a contaminant or pollutant which could enter the drinking water system by means of backflow.
Backflow contamination can be controlled by installing backflow prevention assemblies at or near the cross connection. These assemblies are mechanical units which require maintenance and in many cases, routine testing to ensure that they are functioning properly.
Having an active, ongoing cross connection program is a vital part of providing clean, safe drinking water.
Ordinance Number 319
An Ordinance regulating and prohibiting cross-connections to the water supply of the City, Declaring cross-connections to be a hazard and providing for abatement thereof, setting forth definitions and otherwise providing as set forth below.
The City of Glendale ordains as follows:
Water Supply Cross-Connections
1. Purpose and Scope
4. Use of Backflow Prevention Devices
5. Cross-Connections Inspections
Section 1. Purpose and Scope The purpose of this ordinance is to protect the public health of water consumers by the control of actual and or potential cross-connections to customers.
Section 2. – Definitions
A. Backflow – Shall mean the undesirable reversal of water or mixtures of water and other liquids, gases or other substances into the distribution pipes of the potable supply of water from any source or sources.
B. Backflow Prevention Device (approved) – shall mean a device that has been investigated and approved by the regulatory agency having jurisdiction. The approval of backflow prevention devices by the regulatory agency should be on the basis of a favorable laboratory and field evaluation report by an “approved testing laboratory” recommending such approval.
C. Backflow Prevention Devices (type) – shall mean any approved device used to prevent backflow into a potable water system. The type of device used should be based on the degree of hazard either existing or potential.
D. City – shall mean the City of Glendale.
E. Contamination – shall mean the entry into or presence in a public water supply system of any substance which may be deleterious to health and or quality of the water.
F. Cross-Connection – shall mean any unprotected actual or potential connection or structural arrangement between a public or consumer’s potable water system and any other source or system through which it is possible to introduce into any part of the potable system any used water, industrial fluid, gas, or substance other than the arrangements, jumper connections, removable sections, swivel or changeover devices and other temporary or permanent devices through which or because of which “backflow” can or may occur are considered to be cross-connections.
G. Hazard, Degree of – shall be derived form the evaluation of a health, system, plumbing or pollution hazard.
H. Hazard, Health – shall mean an actual or potential threat of contamination of a physical or toxic nature to the public potable water system or the consumer’s potable water system that would be a danger to health.
I. Hazard, Plumbing – shall mean an internal or potential threat of contamination of a physical or toxic nature to the public potable water system or the consumer’s potable water system that would be a danger to health.
J. Hazard, Pollutional – shall mean an actual or potential threat to the physical properties of the water system or the potability of the public or the consumer’s potable water system but which would not constitute a health or system hazard, as defined. The maximum degree of intensity of pollution of which the potable water system could be degraded under this definition would cause a nuisance or be aesthetically objectionable or could cause minor damage to the system or its appurtenances.
K. Hazard, System – shall mean an actual or potential threat of severe danger to the physical properties of the public or consumer’s potable water system or a pollution or contamination which would have a protected effect on the quality of the potable water in the system.
L. Health Division Officer – shall mean the Oregon State Health Division Office, or authorized agent.
M. Potable Water Supply – shall mean any system of water supply intended or used for human consumption or other domestic use.
N. Manager – shall mean the City Utility Manager of the City of Glendale.
Section 3. Cross-Connections. The installation or maintenance of a Cross-Connection which will endanger the water quality of the potable water supply system of the City shall be unlawful and is prohibited. Any such Cross-Connections now existing or hereafter installed is hereby declared to be a public hazard and the same shall be abated. The control or elimination of Cross-Connections shall be in accordance with this ordinance and in compliance with the Oregon Administrative Rules Chapter 333 Public Water Systems Section 42-230. The Manager shall have the authority to establish requirements more stringent than state regulations if he deems that the conditions so dictate. The City shall, through resolution of the Common Council, make such rules and regulations as are necessary to carry out the provisions of this ordinance. Those officials responsible for enforcement of the City’s building ordinances and regulations are hereby authorized to enforce the provisions of this ordinance in the inspection of existing, new, and remodeled buildings.
Section 4. Use of Backflow Prevention De vices.
A. No water service connection to any premises shall be installed or maintained by the City unless the water supply is protected as required by state law, state regulations and this ordinance. Service of water to any premises shall be discontinued by the City if a Backflow Prevention Device required by this ordinance is not installed, tested and maintained, or if it is found that a Backflow Prevention Device has been removed or bypassed, or if an unprotected cross-connection exists on the premises. Service will not be restored until such conditions or defects are corrected.
B. The customer’s system should be open for inspection and tests at all reasonable times to authorized representatives of the City to determine whether Cross-Connections or other structural or sanitary hazards, including any violation of this ordinance, exist. When such a condition becomes known, the Superintendent shall deny or immediately discontinue service to the premises by providing for a physical break in the service line until the customer has corrected the condition(s) in conformance with state and City laws relating to plumbing and water supplies and the regulations adopted pursuant thereto.
C. If an approved Backflow Prevention Device is to be installed on a service line to a customer’s water system, it shall be installed near the property li8ne or immediately inside the building being served; but, in all cases, before the first branch line leading off the service line.
D. Backflow Prevention Devices shall be installed under circumstances including but not limited to the following:
1. Premises having an auxiliary water supply.
2. Premises having Cross-Connections that are not correctable or have intricate plumbing arrangements which make it impractical to ascertain whether or not Cross-Connections exist.
3. Premises where entry is restricted so that inspections for Cross-Connections cannot be made with sufficient frequency or at sufficiently short notice to assure that Cross-Connections do not exist.
4. Premises having a history of Cross-Connections being established or re-established.
5. Premises on which any substance is handled under pressure so as to permit entry into the public water supply, or where a Cross-Connection could reasonably be expected to occur. This shall include handling of process waters and cooling waters.
6. Premises where materials of a toxic or hazardous nature are handled in such a way that if back siphonage would occur, a serious health hazard might result.
7. The following types of facilities will fall into one of the above categories where a Backflow Prevention Device shall be installed at these facilities unless the City determines that no hazard exists.
a. Hospitals, mortuaries, clinics;
c. Metal plating industries;
d. Piers and docks;
e. Sewage Treatment Plants;
f. Food or beverage processing plants;
g. Chemical plants using a water process;
h. Petroleum processing or storage plants;
i. Radioactive material processing plants or nuclear reactors;
j. Facilities with fire service lines as specified by Oregon State Health Division;
k. Others specified by the City.
E. The type of protective device required shall depend on the degree of hazard which exists:
1. An air-gap separation or a reduced-pressure-principle Backflow Prevention Device shall be installed where the public water supply may be contaminated with sewage, industrial waste of a toxic nature, or other contaminant which could cause a health or system hazard.
2. In the case of a substance which may be objectionable but not hazardous to health, a double check valve assembly, airgap separation, or a reduced-pressure-principle Backflow Prevention Device shall be installed.
F. Backflow Prevention Devices required by this ordinance shall be installed under the supervision and with the approval, of the City.
G. Any protective device required by this ordinance shall be approved by the manager.
H. These devices shall be furnished and installed by and at the expense of the customer.
I. It shall be the duty of the customer-user at any premise where Backflow Prevention Devices are installed to have certified inspections and operational tests made at least once per year. In those instances where the Manager deems the hazard to be great enough, he may require certified inspections at more frequent intervals. These inspections and tests shall be at the expense of the water user and shall be the duty of the Manager to see that these timely tests are made. The customer-user whenever said devices are found to be defective. Records of such tests, repairs and overhaul shall be kept and copies sent to the Manager.
J. No underground sprinkling device will be installed without adequate Backflow Prevention Devices.
K. Failure of the customer to cooperate in the installation, maintenance, testing or inspection of Backflow Prevention Devices required by this ordinance or by state law shall be grounds for the termination of water service to the premises.
Section 5 – Cross-Connection Inspection.
A. No water shall be delivered to any structure hereafter built within the City or within areas served by City Water until the same shall have been inspected by the City for the possible Cross-Connections and been approved as being free of same.
B. Any construction for industrial or other purposes which is classified as hazardous facilities where it is reasonable to anticipate intermittent Cross-Connections, or as determined by the Manager, shall be protected by the installation of one or more Backflow Prevention Devices at the point of service from the public water supply or any other location designated by the City.
C. Inspections shall be made at the discretion of the Manager of all buildings, structures, or improvements for the purpose of ascertaining whether Cross-Connections exist. Such inspections shall be made by the City.
Section 6 – Liability.
This ordinance shall not be construed to hold the City responsible for any damage to persons or property by reason of the inspection or testing herein, or the failure to inspect or test or by reason of approval of any cross-connections.
Section 7 – Violation –Penalty.
Any person, firm or corporation which violates any provision of Article I, upon conviction thereof, shall be punished by a fine of not more than $200.00.
Passed by the Common Council this 10th day of October, 1994.
Approved by the Mayor this 10th day of October, 1994.
H.B. Clark, Mayor
Lynnette Evans, Recorder