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Sewage Holding Tanks

    Sewage Holding Tanks are normally used where the installation of a normal septic system is not possible. Such locations may include very small lots, excessively rocky areas or environmentally sensitive locations. In some cases the presence of high water tables may not allow for septic field installation.

    All holding tanks are intended for below ground installation. If depth of excavation does not allow for complete burial, then additional fill should be placed around and above tank to provide protection from winter freezing.

    As with any tank, care should be taken when determining the depth to which the tank, if empty at times, can be buried. Most concrete tanks will float when empty. Flotation ( neutral bouyancy ) occurs once water is allowed to rise around the tank to the level at which the weight of the water displaced is equal to  the weight of the tank plus any overburden.

    A visual and audible alarm must be installed to indicate a desired pump-out level that allows for continued filling for a period of time before pump-out can be accomplished. WCP holding tanks provide gasketed cast-inplace fittings on tank lid to facilitate installation of such hardware.

    WCP also supply’s an extensive line of installation accessories including alarm panels & controllers, float switches, piping, valves and fittings.

    Features of a Winona Holding Tank include:

• CSA Certified
• Flexible rubber boots with stainless steel clamps and/or gasketed PVC sewer fittings cast-inplace at tank fill and pump-out locations. No leaky hard plastic or concrete knockouts.
• 150 mm dia x 1,200 mm high PVC BDS Pipe supplied w/cap to allow for pump-out without the necessity of removing access riser lid
• One ‘PolyLok’ plastic access riser is cast into the tank lid. Additional 6” high riser sections may be added if at or above grade access is desired. Each section is smooth walled, sealed and secured from movement by frost ( unlike ribbed plastic or unsecured concrete risers ). Retrofit access riser kits are available for installation on existing tanks.
• Oval shape with minimum flat wall components for inherent design strength.
• Fully automated computerized low water-to-cement mix designs produce high density, high strength concrete.