The New Hampshire Department of Environmental Services (NHDES) is requesting proposals for leak detection surveys at 46 community water systems in New Hampshire during the 2023 field season. The purpose of the surveys is to reduce water and revenue loss by assisting water systems with leak identification and location. Projects range in size from entire distribution systems to portions thereof with the total length of pipe proposed to be surveyed spanning approximately 805 miles. Leak detection projects that are selected will be funded through a set-aside of the Drinking Water State Revolving Fund (DWSRF). The work will consist of performing acoustic listening surveys on the distribution systems of the water systems selected from the list in Appendix A, as well as coordinating with those systems to schedule the surveys and meet with system personnel as needed. Because the scope of work is extensive, proposals for portions of the survey work will be accepted, and multiple contractors may be hired. The surveys shall be conducted in accordance with the "Manual of Water Supply Practices, Water Audits and Loss Control Programs" document identification number AWWA M36, American Water Works Association, 2016. Surveys must be performed in two phases: an initial screening of the area to identify suspected leaks followed by a pinpointing phase to locate the suspected leaks. A detailed report of the findings must be filed with NHDES and the water system at the conclusion of each survey. It will be the responsibility of the water system to repair any leaks found. All inquiries related to this Request for Proposals should be made to Stacey Herbold, who may be reached using the address, by telephone at (603) 271-6685, or by email at stacey.herbold@des.nh.gov. NHDES expects to notify all firms as to the outcome of the selection process by January 31, 2023. The method of Contractor Selection has not been Determined at this time.
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