Structure of current water rate
Characteristics of water rate of Yokohama-shi are as follows.
①In Yokohama-shi, we adopt fee structure according to use that we classified for public baths for duties for housework and set difference for payment of rate depending on use use.
②We set basic quantity of water of 8㎥ in one month and are available at rate for base rate to 8㎥.
③As consumption increases, we adopt "*zokata" becoming high in sub-quantity rate unit price per 1㎥ and will have payment by higher unit price so as to use a lot.
Problem of current water rate
On the other hand, current water rate system has the following problem.
Ratio to collect fixed cost at problem 1 base rate is the low situation
Ratio of fixed cost that it costs for maintenance and update of facility accounts for 90% of expense. It is ideal to cover fixed cost with base rate, but it is the current situation that covers most with sub-quantity rate.
Saving water effort is not reflected for use within problem 2 basics quantity of water
When we put for housework, person within basic quantity of water 8㎥ occupies 30% of the whole, and use quantity of water increases the ratio year by year, and voice that saving water effort is not rewarded reaches.
Problem 3 *zodo ※But, it is high and depends on a large quantity of users
※*zodo refers to the degree that how much the best unit price of list of charges becomes than the minimum unit price
Life water seems to become as low-priced as possible, and base rate, small quantity quantity of water obi assumes price less than water supply cost price, and the system is such that we supplement deficiency for surplus more than cost price of use of large quantity Zone.
As problem 4 *zodo is high, decrease in rate income ratio becomes bigger than decrease in use quantity of water ratio
Examination about relaxation of *zodo is necessary for fee structure that depended on a large quantity of users when based on this tendency to lead to further income decrease.
After eight times of deliberation by "council for ways such as Yokohama-shi water rates", we had report in September, 2019 to cope with these problem.
About the situation, report of the deliberation, please see this.
Summaries of council for way such as Yokohama-shi water rates
About administration policy of Water Works Bureau, budget, financial statements, please see this.
Introduction of Water Works Bureau
As for the public information Yokohama ⽔ way station xtra, please see this.
Public information Yokohama Water Works Bureau xtra