(a) Source of supply

Supervision, labor and expense

Purchased water

Maintenance--structures and improvements

Ground water replenishment

(b) Pumping

Supervision, labor and expense

Fuel or power purchased for pumping

Maintenance--structures and improvements

(c) Water treatment

Supervision, labor, and expense

Maintenance--structures and improvements

(d) Transmission and distribution

Supervision, labor and expense

Maintenance--structure and plant

(e) Customer accounts

Supervision, meter reading and other expenses

Uncollectible accounts

(f) Administrative and general

Salaries

Office supplies and other expenses

Franchise requirements

Property insurance, injuries and damages

Rents and leases

Maintenance--general plant

Employees retirement and benefits

Other

(g) Other operating

Depreciation and amortization

Other

Taxes

Expense credits

(h) Non-operating

Interest on long-term debt

Other

Other interest

Expense credits

Expense applicable to prior years

Expenses of other activities