COALSI Solutions | Extraneous Water

Solutions for congested sewage systems during heavy rain

When heavy rainfall overwhelms the sewer network and the connected infrastructure of the sewage treatment plants, the Aquastop can remedy the situation simply and cost-effectively. During heavy rain, more than eight to ten times the normal volume of water must be absorbed by the sewage system at times. Wastewater treatment plants and sewer systems are often unable to cope with this challenge, which results in high costs.

The COALSI Aquastop reliably prevents extraneous water from entering the sewer system — without moving parts or electricity. As an innovative use for sewer manhole covers, it reduces extraneous water inflow and protects the sewer network from overloading. The lightweight, corrosion-resistant construction enables quick and easy installation. Optionally, an integrated ventilation system ensures continuous air circulation in the duct. Choose a low-maintenance and efficient solution for dry shafts and a relieved sewer network.

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COALSI products for

Extraneous Water

Aquastop

Prevents foreign water from entering the sewer network too quickly and uncontrollably and relieves the load on the sewage treatment plant — also available with integrated ventilation.