University of Illinois Extension

Quiz

Section 905.160 — Swimming Pool Wastewater

  1. Section 905.160 — Swimming Pool Wastewater
    Incorrect. The correct answer is highlighed in green below.

    Wastewater from swimming pools may be discharged to a private sewage disposal system.
    False
  2. Section 905.160 — Swimming Pool Wastewater
    Incorrect. The correct answer is highlighed in green below.

    A tank designed for settling of backwash materials must be
    1. Dewatered after settling
      (905.160 b-2-B) Wash or backwash water from sand filters may be discharged to natural drainage areas, storm sewers, seepage pits, or to the ground surface. Diatomaceous earth filter wash or backwash water may be discharged to one of the above after treatment consisting of one of the following: A) Passing the wastewater through a separation tank designed for removal of the diatomaceous earth and suspended solids. B) Settling the wastewater in a tank which is capable of holding the volume of one backwash. One backwash is defined as the amount of water generated from the backwash of the filters for a period of 2 minutes for diatomaceous earth filters, at the required backwash flow rate. The tank shall be dewatered after settling and prior to subsequent backwashes. Settled sludge shall be periodically removed to prevent flushing of solids during backwashing. (See Appendix A: Illustration W of this Part.) C) A separate private sewage disposal system designed and constructed in accordance with the applicable Sections of this Part.
    2. Not used for 3 weeks after a backwash
    3. Dewatered prior to settling
    4. Not used for one week after a backwash