1. No water service connection to any premises shall be installed or maintained by the Public Water Purveyor unless the water supply is protected as required by applicable State laws, regulations, codes, and this Chapter. Service of water to a consumer found to be in violation of this Chapter may be discontinued by the water purveyor as set forth herein. Service will not be restored until such conditions or defects are corrected.

2. The customer's system(s) shall be open for inspection at all reasonable times to authorized representatives of the water purveyor to determine whether cross connections or other structural or sanitary hazards, including violations of this Chapter, exist.

3. Whenever the public water purveyor deems a service connection's water usage contributes a sufficient hazard to the water supply, an approved back flow prevention assembly shall be installed on the service line of the identified consumer's water system, at or near the property line, or immediately inside the building being served; but, in all cases, before the first branch line leading off the service line.

4. The type of protective assembly required shall depend upon the degree of hazard which exists at the point of cross-connection (whether direct or indirect), applicable to local and state requirements or resulting from the survey.

5. All presently installed back flow prevention assemblies which do not meet the requirements of this section but which were approved assemblies for the purposes described herein at the time of installation and which have been properly maintained, shall, except for the inspection and maintenance requirements under this Chapter, be excluded from the requirements of these rules so long as the water purveyor is assured that they will satisfactorily protect the public water system. Whenever the existing assembly is moved from the present location or, requires a more than minimum maintenance or, when the water purveyor finds that the operation or maintenance of this assembly constitutes a hazard to health, the unit shall be replaced by an approved back flow prevention assembly meeting the local and state requirements.

6. It shall be the responsibility of the consumer at any premises where back flow prevention assemblies are installed to have certified surveys/inspections, and operational tests made upon the request of the Public Water Purveyor, at the consumer's expense.

7. All back flow prevention assemblies shall be tested within ten (10) working days of initial installation.

8. No back flow prevention assembly shall be installed so as to create a safety hazard. Example: installed over an electrical panel, steam pipes, boilers, or pits.

9. If violations of this Chapter exist or if there has not been any corrective action taken by the consumer within 10 days of the written notification of deficiencies, or within such additional time as provided in the written notice, then the public water purveyor may deny or immediately discontinue service to the premises by providing a physical break in the service line until the customer has corrected the condition(s) in conformance with the State and City requirements relating to plumbing, safe drinking water supplies and this Chapter.