Energy-Passive Groundwater Recharge Pump (EGRP)

New Technology in Basement Drainage

There is new technology to solve the problem of a wet basement.

Parjana, Inc. has developed a non-electric pump designed to relieve hydrostatic pressure and push the water down below the foundation and back into the natural water cycle.

The new Energy-Passive Groundwater Recharge Pump (EGRP) is powered by the energy created from the soil as it expands and contracts. "It is hard to understand a pump that doesn't run on electricity" says inventor and owner Andrew Niemczyk, Parjana Inc., Southfield, Michigan. "The pumps have to run on energy; it is true. We are just using the energy from Mother Nature."

The soil is constantly moving; expanding and contracting. When the soil gets wet it expands and as it dries it contracts. This pump is activated by that movement in the soil: hydrostatic pressure.

Energy-Passive Groundwater Recharge Pump

The hydrostatic pressure building up against the side of the foundation wall is what is pushing the water into your basement in the first place. If you relieve the hydrostatic pressure, you will resolve the cause of your water problem.

The Parjana system is a free-standing drainage system. It doesn't rely on a separate drainage system; it relies on the natural drainage system of the soil. The pumps are drilled straight down into the ground around the perimeter of the foundation. It punches through the layers of the soil and meets back up with the natural water table. "Often times, with other systems, the water is pumped into the sewer system or the storm drain where it has to be treated in order to use again" Niemczyk says. "With this system, the water is not lost. It is pushed back into Nature's water cycle and recharges the ground water."

In addition to the pump, Parjana has a water deflection panel. It is installed at the edge of the foundation. It is not nailed to the foundation so it can move with the soil. Together, the pump and the water deflection board make the complete Parjana waterproofing system.

This system replaces traditional waterproofing techniques for interior and exterior drainage applications. These pumps can be installed to solve almost every water problem. Stan Marko, Concrete Water Solutions, Columbiaville, Michigan was approached by the inventor to start installing Parjana products in 2010. "I have seen it work to solve Iron Algae, high water tables (or what is thought of as though as a high water table - when the water is trapped between two upper layers of the soil) and Artesian Wells, where the water is bubbling up from the ground" says Marko. Because it relieves hydrostatic pressure from the soil, it also solves humidity problems. Without dehumidifiers, this waterproofing system has created a 55% relative humidity level in many Michigan basements.

Energy-Passive Groundwater Recharge Pump

Because there is no need for full excavation or re-landscaping the cost is typically less than traditional exterior systems. "It costs less than a traditional exterior drainage system but it does cost more than the typical interior system" says Marko. "Unlike the interior systems, this system does not let the water come in at all. It keeps the water out and solves the cause."

Parjana's inventor has been testing this new technology since 2004. Seven years, before its release to the residential basement waterproofing market. This technology has been tested in all soil types and categories. It works on A, B, C and D soil classifications. It can be installed to relieve hydrostatic pressure around all different types of foundations (basements, crawlspaces or slabs) or even just bad drainage areas in the landscape.

One of the first pilot sites was a golf course in Michigan. Three areas of the golf course wouldn't drain properly and were constantly saturated. Niemczyk installed the EGR pumps around the perimeter of the problem areas and solved the problem. That was five years ago and the problem areas are still dry today.

The beauty of this system is that there is no maintenance. "Once it is done, it is done forever" says Niemczyk. There is no maintenance because it is self-cleaning. As the pump pulls the water through it siphons the water and cleans the pump.

Another example was a residential basement in Michigan. It had a major problem with water seepage. The homeowner had two previous waterproofing systems installed in his basement - an interior and exterior system - and the basement still leaked. The problem was too much water in the soil around his home. The hydrostatic pressure was building up and water was seeping through the walls. Marko says the soil was so saturated around the home that drilling for the EGR pumps was like drilling into mud. After one week since installing the EGR pumps, the homeowner reported his sump pumps have been running less each day. Progressively the water will dissipate and there won't be enough hydrostatic pressure for the water to penetrate the basement walls.

The EGR pumps can also be installed for new construction waterproofing. It removes the water from the soil preparing the ground for a new foundation, Niemczyk says. By removing the water from below the foundation, it will prevent future settlement; one of the typical causes of concrete cracks.

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