Whenever a building permit is issued, the minimum water service charge shall be paid, in addition to the building permit fee, to the village for each three-month period while the building is under construction and before the permanent water meter is installed and protected from freezing to cover the cost of unmetered water used during the construction period and anticipated use in the building prior to installation of the permanent meter. If, in the opinion of the Director of Public Works, the use of water during the construction period may be excessive, the Director may require the installation at the owner's expense of a temporary outside meter to measure water used, which shall then be paid for at the regular metered water rates.