1466                              LAWS OF MARYLAND                        [CH. 706

when required by this subtitle, by notice in one newspaper published
in the county and such newspapers and technical press as it may
deem proper, advertise for bids for the construction of the system or
systems, in part or as a whole, as in its judgment may appear ad-
visable. The contract shall be let to the lowest responsible bidder, or
the Commission may reject any or all bids; and, if in its discretion
the prices quoted are unreasonable or unbalanced, it may readvertise
the work or any part of it or may do any part or all of the work
by day labor; provided that at any time the Commission, in its dis-
cretion, may expend by day labor for construction an amount not
exceeding one thousand dollars ($1,000.00) without advertising and
receiving bids. All such contracts shall be protected by such bonds,
penalties, and conditions as the Commission may require, all of which
shall be enforced in any court having jurisdiction.

416. Construction of private systems.

No sewerage, water, or drainage system or extension thereof serv-
ing two or more properties in the sanitary district may be con-
structed by any private owner without the prior approval of the
Commission. If upon application for the construction or extension
of any such system the Commission determines that the construction
or extension is inexpedient or impracticable at that time, owing to
the remoteness from its general system or other considerations, the
applicant may build and operate the system or extension thereof at
its own expense; but it shall be constructed only under such plans
and specifications as have been submitted to and approved by the
Commission, and its maintenance and operation shall be under the
general control of the Commission. No such system or part thereof
or no water main, sewer, storm drain, water purification or sewage
treatment plant or no connection with any of them shall be con-
structed or installed except as in this section provided, and any vio-
lation of this provision shall be a misdemeanor punishable under
Section 425 of this subtitle. The applicant for the construction or
extension of any such privately-owned system shall bear the rea-
sonable costs that the Commission may incur for the review and ap-
proval of any such plans and for the supervision by the Commission
of the maintenance and operation of such system. All construction
and operating records including cost records shall be filed with the
Commission, which shall be empowered at any time to take over
said system or part thereof or said water main, sewer, storm water
drain, water or sewage treatment plant or connection with any of
them in the same manner as provided under Section 407. Nothing
in this section impairs the rate making powers of the Public Service
Commission nor eliminates the requirements of the law for the
approval of the Department of Health in the construction and main-
tenance of sanitary facilities. NO PRIVATE SEWERAGE, WATER
OR DRAINAGE SYSTEMS OR EXTENSIONS THEREOF AUTH-
ORIZED BY THIS SECTION SHALL BE APPROVED IF THE
CONSTRUCTION AND OPERATION OF SUCH SYSTEM OR SYS-
TEMS WILL CAUSE WATER POLLUTION ENDANGERING THE
WATER SUPPLY OF ANY MUNICIPALITY OR OTHER PUBLIC
AGENCY OR PRIVATE UTILITY CORPORATION SUPPLYING
SANITARY SERVICES IN HARFORD COUNTY. IF A PRIVATE
SYSTEM APPROVED UNDER THE AUTHORITY HEREOF
CAUSES SUCH POLLUTION, THEN THE COMMISSION IS
AUTHORIZED TO REQUIRE SUCH MODIFICATIONS AS MAY