Rumia, Poland, will store millions of liters of water underground

Rumia, Poland, will store millions of liters of water underground

A giant underground reservoir will purify water and release it when needed, preventing drought and saving the municipality a lot of money

Earlier this week, the Polish municipality of Rumia announced that it would build a massive underground tank storage system. The quantities captured there will be filtered and used to water the surrounding vegetation, making it an integral part of the municipal flood protection system.

New ways to retain and store rainwater in the face of adverse climate effects

Rumia has already secured funding for the construction of the innovative system. Its main function, of course, will be to keep water of good quality for as long as it is needed. This will be done in an innovative way, the authorities explain, because instead of being stored in a concrete tank or reservoir and being drained in the conventional way, the liquid will be purified and kept under pressure underground. To do this, the municipality will use an installation consisting mainly of connected pipes with a diameter of up to 2.5 meters and UV lamps.

Underground reservoirs will be able to store a total of approximately 7,500 cubic meters of water, intended to irrigate urban vegetation. This means that these quantities of water will not be bought and paid for and the city will save a lot of money, while tackling the water deficit problem.

Finally, the authorities are convinced that the action is also ecological because the investment will contribute to safety against floods. In particular, reservoirs near Błonia will intercept water that would otherwise flow further away, potentially flooding private properties.

The project consisting of the construction of underground storage tanks and the use of rainwater for vegetation received public funding of PLN 4.25 million, while the total cost is estimated at around PLN 6 million .

Although still at the design stage, the city hopes to be able to launch a call for tenders for the construction of the water retention reservoirs by the end of the year. If at this stage they manage to select a contractor, the system could be finalized by the end of 2023.

Bonny J. Streater