Effective Date: December 30, 1992

5-1.20 Applicability.

The provisions of sections 5-1.20 through 5-1.33 of this Subpart shall apply to all public water systems, provided the systems serve 15 or more service connections or serve 25 or more persons.

Effective Date: July 3, 1991

5-1.21 Siting requirements. Before a person shall enter a financial commitment for or initiate construction of a public water system, such person shall notify the State and to the extent practicable, avoid locating part or all of the public water system at a site which:

(a) is subject to a significant risk from earthquake, floods, fires or other disasters; or

(b) except for intake structures, is within the floodplain of a 100-year flood or is lower than any recorded high tide.

Effective Date: November 9, 2011

5-1.22 Approval of plans and completed works.

Effective Date: January 17, 2018

(a) No supplier of water shall make, install or construct, or allow to be made, installed or constructed, a public water system or any addition or deletion to or modification of a public water system until the plans and specifications have been submitted to and approved by the State. Materials used in the design, construction and repair of a public water system shall be lead-free. For this Subpart, lead-free shall mean:

(1) Solder or flux which contains no more than 0.2 percent lead.

(2)Pipes, pipe fittings, plumbing fittings and fixtures which contain no more than a weighted average of 0.25 percent lead with respect to the wetted surfaces.

The weighted average lead content of a pipe, pipe fitting, plumbing fitting, or fixture shall be calculated by using the following formula: For each wetted component, the percentage of lead is multiplied by the ratio of the wetted surface area of that component to the total wetted surface area of the entire product to arrive at the weighted percentage of lead of the component. The weighted percentage of lead of each wetted component is added together, and the sum of these weighted percentages constitutes the weighted average lead content of the product. The lead content of the material used to produce wetted components is used to determine compliance with subdivision (a)(2) of this section. For lead content of materials that are provided as a range, the maximum content of the range must be used for calculating the weighted average lead content.

Effective Date: November 9, 2011

(b) Approval of plans and specifications for public water systems shall be based on the following standards in their entirety. The State may allow deviations from these standards in accordance with procedures established by the commissioner.

(1) "Recommended Standards for Water Works", (Appendix 5-A)

(2) Standards for Water Wells (Appendix 5-B)

(3) Special Requirements for Wells Serving Public Water Systems (Appendix 5-D)

Effective Date: November 23, 2005

(c) The State may approve such plans or may require such modification which is deemed necessary to protect public health or safety. Application for plan approval shall be made on a form prescribed by the department.

(d) A supplier of water shall receive the approval of the State before placing into service any public water system constructed under the requirements of this section.

Effective Date: March 11, 1992

5-1.23 Reporting emergencies.

(a) The supplier of water shall not take, use, or cause to be taken for use water from any emergency source or stop or alter disinfection or other treatment processes without first having notified by telephone or telegram, and received the approval of, the State. On receipt of such notification, the State shall advise the supplier of water and interested local officials of the approved action or proposed action by the supplier of water to protect the public health during the emergency.

(b) The supplier of water must make State notification when he determines that the delivery of water is interrupted to a minimum of 25 individuals or 15 service connections, or to a minimum of one percent of the total number of individuals served or service connections, whichever is larger, for a period of four hours or more.

(c) A printed copy of this section shall be conspicuously posted in the office used by the supplier of water.

Effective Date: July 3, 1991

5-1.24 Approval of fluoridation of public water system.

Fluorine compounds shall not be added to a public water system until a written application has been submitted to, and written approval is granted by, the State.

Effective Date: July 3, 1991

5-1.25 Disinfection/Start-up of facilities.

(a) No spring basin, collecting basin, well, infiltration gallery, water main, pumping station, standpipe or reservoir shall be placed in service following cleaning or repairs until it has been disinfected in a manner approved by the state.

Effective Date: May 16, 2018

(b) For each operational period, before serving water to the public, all seasonal systems must demonstrate completion of a State approved start-up procedure.

Effective Date: July 3, 1991

5-1.26 Dewatering trenches.

No repair to the public water system shall be made until the trench has been dewatered to a point below the mains, valves or other structures. Every effort shall be made to prevent the entrance of foreign material and seepage into the public water system.

Effective Date: July 3, 1991

5-1.27 Adequacy of distribution system.

The public water system shall be maintained and operated by the supplier of water to assure a minimum working pressure of 20 pounds per square inch at ground level at all points in the distribution system. Measurement of pressure may be obtained from representative points of use.

Effective Date: July 3, 1991

5-1.28 Blowoff facilities.

All blowoff drains or discharge pipes connected to the public water system should be terminated at points where these structures will not be subject to flooding or otherwise subject to contamination.

Effective Date: July 3, 1991

5-1.29 Pumping equipment.

Pumping equipment of a public water system, for water which is not subject to later treatment, shall be installed and operated to prevent contamination of the public water system. Whenever priming is necessary, such pump shall be primed with water meeting the requirements of sections 5-1.51 and 5-1.52 of this Subpart.