You probably either have a well or a cistern you use at this time. They must not be connected in any way to the line coming in from the LPWWA meter unless you follow all the Colorado laws regarding Cross-Connection (Back-flow preventer). Check with your contractor as to what they recommend. See excerpt from LPWWA Rules and Regulation (R&R) regarding this. See full R&R under Document menu.
Colorado State Cross-Connection (Back Flow Preventer) Guide CDPHE BPCCC Guidance Document 2017
Connecting with cistern? Please see: Here
LPWWA Rules and Regulation excerpt
CROSS–CONNECTION CONTROL PROGRAM
3.30 Subscriber Compliance.All Subscribers shall comply with the Safe Drinking Water Act of 1974 (amended 1974-1996) and Article 12 of the Colorado Primary Drinking Water Regulations and the La Plata West Water Authority Cross-Connection Control Program. In addition, Subscribers are required to complete a survey that identifies possible cross connections and return the survey to the Board. Failure to comply may disrupt service.
3.31 Law. Colorado State law provides that any person, association or corporation, or the officers thereof, who violate the provisions within the Cross-Connection Control Program is guilty of a misdemeanor. If convicted of the misdemeanor, the person(s) can be punished by fines of not more than one thousand ($1,000) dollars or by imprisonment in the county jail. In addition to such fines and imprisonment, the person(s) shall be liable for all fees and expenses incurred by La Plata West Water Authority or health authorities in removing such nuisance, source of filth, or cause of sickness. Conviction under the penalty provisions of this or any other public health law does not relieve the person from any civil action in damages.
3.32 Interruption of Service. The water service/supply may at any time be shut off from La Plata West Water Authority supply or mains without notice due to emergencies or for the purpose of making repairs, extensions, or other necessary work. Subscribers who require a continuous supply of water must take necessary steps, such as installation of a water storage facility on their premises, in case the water supply is interrupted for any reason. La Plata West Water Authority does not guarantee a continuous supply of water. Subscribers who have temporary storage facilities shall abide by all cross connection rules and regulations. La Plata West Water Authority will not haul or carry water to any Subscriber in the case of interruption of service.