Illinois Administrative Code
Title 77 - PUBLIC HEALTH
Part 905 - PRIVATE SEWAGE DISPOSAL CODE
Section 905.125 - Pumps, Pumping/Dosing Chambers, and Ancillary Equipment
Universal Citation: 77 IL Admin Code ยง 905.125
Current through Register Vol. 48, No. 12, March 22, 2024
a) Pumps shall meet the following requirements:
1) The pump shall
be submersible.
2) The pump shall
be designed to handle wastewater and a minimum of 1/2- inch diameter
solids.
3) The pump shall be
capable of delivering the required flow at the design total dynamic head. The
discharge pipe shall be the same size or larger than the discharge of the
pump.
4) The pump shall be
constructed of corrosion-resistant materials.
5) Performance curves and specification
sheets indicating that the criteria of this subsection (a) have been met shall
be submitted with the plan review application when pumps are to be used in a
system.
b) Pumping Chambers
1) The pumping chamber shall be
watertight, meaning that all joints shall be sealed. The pumping chamber shall
be filled with water after being installed and backfilled to prevent the
pumping chamber from floating out of position because of hydrostatic pressures,
unless the tank is installed in dry soil.
2) The volume of the pumping chamber shall be
sufficient to provide the desired dosing volume, space for controls, space for
setting the pump, reserve capacity malfunction and flow-back after the pump
shuts off (volume of manifold and laterals).
3) A reserve capacity above the active
pumping volume equal to 1/2 day's design flow shall be provided if single pumps
are used. A reserve volume is not needed if siphons or dual pumps are
used.
4) An access riser shall
extend at least 6 inches above the ground surface.
5) The dosing volume shall be at least 5
times the pipe volume of the dosing network and provide for filling and
drainback of the network. The average flow shall be used to determine the
dosing volume.
6) The pump control
device shall be adjustable so that the required dosing volume is discharged
during each pumping cycle. The control system for the pumping chamber shall
consist of a control for operating the pump and an alarm system to detect when
the system is malfunctioning. Pump controls shall allow flexibility in
adjusting the on-off depth. An example of acceptable controls is shown in
Appendix A, Illustration Q.
7) A
high water alarm shall be provided with audible and visual signals and a test
function. The alarm shall be on a separate circuit. The alarm control device
shall be a sealed float or diaphragm switch and shall be located to activate 2
to 3 inches above the pump turn-on level or siphon activation level. After
January 1, 2014, all electrical devices for new and repaired private sewage
disposal systems shall comply with Section
905.20(k).
c) Ancillary Equipment
1) A quick disconnect device shall be
included in the discharge piping to facilitate removal of the pump for
inspection, repair or replacement. The disconnect device shall be a threaded
union, pitless adapter or lift-out rail system.
2) A corrosion-resistant rope or cable of
adequate strength shall be affixed to the pump to facilitate installation and
removal so that personnel need not enter the chamber to disconnect the
pump.
3) A pump control device
shall be adjustable so that the desired dosing volume can be discharged during
each pumping cycle. The control device may consist of one or more sealed float
or diaphragm switches that may cooperate with a relay or contact. Separate
control panels located outside the chamber shall be protected from the weather
and shall provide no air path between the panel and the pumping
chamber.
4) A check valve between
the pump and the piping network shall not be allowed unless this piping system
is below the frost line.
Disclaimer: These regulations may not be the most recent version. Illinois may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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