The restoration of water management infrastructure in the city requires hundreds of millions of crowns each year

The new water supply network contributes to reducing water loss and improving its quality. In Ostrava, there are 946 kilometers of sewage systems and 1,063 kilometers of water supply networks, which are owned by the city. This year, investments amounted to 802 million CZK (excluding flood damage costs). Among this year's projects we can find the construction of a new wastewater pumping station and reconstruction of wells and sedimentation tanks in the Nová Ves water treatment plant. 

It is worth mentioning that for instance, the water treatment plant in Ostrava-Nová Ves was put into operation in 1908, and its construction and architectural design were indeed ahead of its time. The newly constructed waterworks was located along the Imperial Road from Opava to Těšín. The facility was constructed according to the latest technical knowledge of the time. The cost of construction at that time exceeded 1 million CZK. Significant renovations occurred in the 1920s, 1950s, and 1970s. The gradual renewal was also marked by the flood in 1997 when water from the Odra River inundated the treatment plant area. Since 2008, the treatment plant site has been protected as a cultural monument, and in 2017, the waterworks museum "The History of Water Management in Ostrava - Babylon" was opened.

"The Nová Ves treatment plant is a strategic source of drinking water for Ostrava; thanks to the reconstruction of the sedimentation tanks, there will be an improvement in the drinking water supply. Given the age of these facilities and their intensive usage, the complexity and necessity of their renewal is evident," explained Aleš Boháč, Deputy Mayor for the Environment.

The reconstruction of wells S5 (Nová Ves spring) and D3 (Dubí spring) required more than 30 million (excluding VAT), as they were built approximately in the middle of the last century and their water yield was already very low. Work which included drilling new wells, the construction of new valve chambers, electrical kiosks, handling areas, and access roads began in October 2023 and has now been completed. The contractor for the work is SUBLAND-TECH

The reconstruction of the sedimentation tanks at the Nová Ves water treatment plant commenced last year and will be completed next year. The renewal of the two tanks in very poor technical condition will require an amount exceeding 123 million CZK
(excluding VAT). Specifically, it involves the reconstruction of two circular, radially flowing tanks with a diameter of 16 meters and a depth of approximately 6-7 meters. The contractor for the work is a consortium of companies KUNST and ARKO TECHNOLOGY.

However, the city is also investing in a range of renovations of water supply and sewage systems. For instance, in September of this year, the repair of the water main on Mostárenská Street commenced. A new water line will be constructed from polyethylene pipe over a length of 285 meters, and it will also connect to the existing water main on Kotkova Street over a length of 7.4 meters. The piping will be laid in an open trench. Part of the construction involves reconnecting all existing water supply connections to the reconstructed water main. The contractor for the work is AROWANIE STAV. The renewal will require approximately 3.4 million CZK (excluding VAT) and is expected to be completed by April 2025.

At the end of October, the reconstruction of the water main and sewage system in the area of Obránců míru Street was completed. Work was carried out from September of last year and incurred costs of 25 million CZK (excluding VAT). Both the water and sewage pipes were replaced over a total length of 1,429 meters, followed by a comprehensive renewal of the road surfaces. The contractor for the work was HYDROSPOR.

Nearly 1,400 meters of new sewage and water supply networks will be available for residents of Muglinov. Work commenced in September of this year and is planned for completion in August of the following year, with costs exceeding 23.5 million CZK (excluding VAT). An identical timeline has been defined for the construction of the water main and sewage system in Bučina (882 meters). The costs for this project amount to approximately 25 million CZK (excluding VAT), with the contractor being KR OSTRAVA.

In August of this year, the renewal of the water main and sewage systems on Rostislavova and Štramberská Streets was completed. A brand new water main, measuring 145 meters, was constructed from ductile iron. The work also involved the complete renovation of the existing roadway. This work required costs of approximately 14 million CZK (excluding VAT), with AROWANIE STAV as the contractor.

By the end of this year, the reconstruction of the water main and sewage systems in Hornopolní and Nemocniční Streets is expected to be completed. This construction (532 metres of water mains and 625 metres of sewers), which started in April this year, required costs exceeding CZK 58 million. The reconstruction is being carried out in phases, with road closures implemented to ensure the passage of emergency vehicles. The contractor is KR OSTRAVA.

The reconstruction work on the relief sewer in Muglinovská Street will take approximately a year. Repairs are being made to the floors, walls, and ceilings of the relief sewer in poor technical condition. Over approximately 540 meters of the sewer, replacements of the floors, sealing of cracks and holes in the walls, injections for walls and ceilings, and the installation of reinforcement frames in critical areas are being carried out. The renewal began in June of this year, with completion expected in June of the following year, at a cost of approximately 110 million CZK (excluding VAT). The contractor is SUBLAND-TECH.

The sewage system will also be expanded and completed in Hrabová. In the first phase, a new length of 577 meters of combined sewer will be constructed, designed using stoneware pipes set in concrete foundations. Additionally, concrete inspection chambers will be added. The work will be conducted using traditional technology in an open trench, and the entire length is situated outside public thoroughfares. The contractor is KAIVINKONE, which plans to complete the construction in the spring of 2025 for a price of 14.5 million CZK (excluding VAT).

Lastly, on November 7, the contractor "YUCON + COMBIN + STANTER – Hrušov" took over the construction site for the sewage project in Hrušov, which is scheduled for completion in the spring of 2026. A new sewage system will be built over a length of 2,420 meters, using stoneware and concrete pipes. A new sewage pumping station will also be constructed, divided into three parts: handling sanitary and combined sewage, as well as a flood pumping station. “The access road to the pumping station will ensure traffic access to adjacent residential buildings. New parking spaces, areas for container storage, public lighting along the road, and necessary landscaping adjustments will also be included. The investment in this construction amounts to approximately 90 million CZK (excluding VAT),” concludes Břetislav Riger, Deputy Mayor for Investments.