ALBERT C. RITCHIE, GOVERNOR. 581

subject to the same penalties and methods of collection as the
front-foot benefit charges provided under Section S. One-half
of the revenue, above actual cost, derived from such charges
shall be retained by the commission as a contingent fund for
repairs, replacements or any extraordinary expense in the main-
tenance and operation of the water supply, sewerage and drain-
age systems under its control. The remaining half shall be
applied by the commission to the payment of the bonded debt,
as hereinafter provided.

SEC. 12. And be it further enacted, That all sums collected
by said commission for benefits levied against property for
water supply, sewerage and drainage construction, and half of
all sums collected by the commission for water, sewer and drain-
age connections, as provided in Sections 8 and 11, shall be
set aside as a separate fund to be known and designated as
the "Current Interest and Sinking Fund, " from which fund
interest shall be paid on all outstanding bonds, and the bal-
ance, if any, transferred to the "Joint Sinking Fund Account, "
as provided under Section 6. Said commission, in order to de-
termine the amount necessary to be levied under Section 6,

shall deduct the amount to its credit in said "Current Interest
and Sinking Fund" from the whole amount necessary to be
raised in any one year for interest and sinking fund in out-
standing bonds, and the balance remaining to be raised shall
be the amount to be certified to the County Commissioners of
Anne Arundel County for collection by taxation, as provided
under Section 6.

SEC. 13. And be it further enacted, That for the purpose
of providing funds for maintaining, repairing and operating
its water supply, sewerage and drainage systems, including
overhead expense and proper depreciation allowance, and for
interest and the retirement of bonds as hereinafter specified
said commission shall be empowered and directed to make such
service rates as it may deem necessary chargeable against all
properties having a connection with any water pipe or sewer
pipe under its ownership. Said rates shall be uniform through-
out the sanitary districts but subject to change from time to
time, as necessary. The rates for service shall consist of a
minimum or ready-to-serve charge, which shall be based upon
the size of the meter on the water connection leading to the
property, and of a charge for water used, which shall be based
upon the amount of water passing the meter during the period
between the last two readings, said meter being required to be