Mo. Code Regs. tit. 20 § 4240-60.020

Current through Register Vol. 49, No. 24, December 16, 2024

Section 20 CSR 4240-60.020 - Engineering and Maintenance

PURPOSE: This rule prescribes the design, operation and maintenance of sewer systems.

(1) Each sewer utility shall maintain and operate a sewage treatment facility of adequate capacity and properly equipped to treat the sewage and discharge effluent of the quality required by the laws of the state of Missouri and in other respects shall comply with the laws and regulations of the state and local health authority.

(2) The design and construction of a utility's system of sewers, treatment facility and all additions and modifications shall conform to the requirements prescribed by law except that any rule contained in this chapter shall apply which is more stringent than those prescribed by the Clean Water Commission.

(3) The sewer utility shall make reasonable efforts to eliminate or prevent the entry of surface or ground water into its sanitary sewer system. It may request assistance from the appropriate state, county or municipal authorities, but such a request does not relieve the sewer utility of its responsibility to prevent the entry of such surface or ground water.

(4) Routine inspections shall be made by the utility of stream crossings where special construction is required at least on six (6) month intervals and more often if necessary, depending upon the amount of rainfall.

(5) Except where special circumstances make it necessary, the utility shall not accept or allow manholes that are covered with earth or other material that prevents the normal removal of the manhole lid. If an existing manhole is covered with earth or other material, the earth or material shall be removed as soon as is reasonably possible.

(6) All construction of sewers and appurtenances shall be inspected by the utility, or its authorized agent, to assure that they are constructed in accordance with approved plans and specifications and shall not be accepted until the construction complies with the plans and specifications. As-built plans and specifications shall be retained by the utility as a permanent record. All construction by other than company employees shall be done by a qualified contractor and materials and workmanship shall be guaranteed by appropriate parties for one (1) year subsequent to the date of acceptance.

(7) Service sewers to customers shall be connected to the collecting sewers by use of an approved wye or saddle. The same construction requirements which are used for collecting sewers shall be used for the construction of service sewers, except for pipe size.

(8) Unless otherwise authorized in writing by the commission, the utility shall make inspections of collecting sewers and manholes on a scheduled basis at intervals not to exceed one (1) year, unless conditions warrant more frequent inspections. It shall make inspections of all mechanical equipment on a daily basis. The utility shall maintain a record of findings and corrective actions required and/or taken, by location and date, that result from such inspections.

20 CSR 4240-60.020

AUTHORITY: sections 386.310(1) and 393.140(11), RSMo 1986.* This rule originally filed as 4 CSR 240-60.020. Original rule filed Feb. 23, 1973, effective March 2, 1973. Moved to 20 CSR 4240-60.020, effective Aug. 28, 2019.

*Original authority: 386.310(1), RSMo 1939, amended 1979, 1989, 1996; 393.140(11), RSMo 1939, amended 1949, 1967.