What is the charging standard for secondary water supply of Jiujiang property?

Jiujiang property secondary water supply charges for 0.5 yuan. According to Article 4 of the contract document, the charging standard of the property management service fee and the secondary water supply pressurization fee is: based on the price of the water supply company, the electricity fee and the maintenance fee of the water pump facilities are added per ton, 0.5 yuan. If the property provides booster pump facilities and daily maintenance for high-rise owners, it is reasonable to charge the owners for the secondary water supply pressurization fee.