(p) A landlord may impose a charge for water use on the tenant of a dwelling unit that is connected directly to a meter installed by a water company; provided that the meter measures only water that is supplied for the exclusive use of the dwelling unit and only to an area within the exclusive possession and control of the tenant of such dwelling unit and does not measure water usage for any portion of any common area or by any other party or dwelling unit. The landlord and tenant shall have all of the same rights and obligations with respect to water charges for such dwelling unit that landlords and tenants have under this section with respect to water charges for any dwelling unit connected to a submeter; provided, however, that the landlord shall not be required to include in the certificate required by subsection (c) the information required by clause (3) of said subsection (c) for dwelling units connected to a submeter; and provided further, that subsection (n) shall not apply to dwelling units connected directly to a meter installed by a water company. Upon a request by the tenant of a dwelling unit connected directly to a meter installed by a water company, the landlord shall apply for a test of the meter to determine its accuracy in accordance with section 10 of chapter 165. The test shall be conducted in accordance with said section 10. The tenant shall reimburse the landlord for any cost incurred in connection with such test. If the tenant does not reimburse the landlord for such cost, the landlord may add such cost to the next bill sent to the tenant and such cost shall be considered to be part of the bill for purposes of subsection (f) and clause (i) of subsection (4) of section 15B of chapter 186.