Largest companies: Water collection, treatment and supply

#1

Wodociągi Miasta Krakowa

S.A.

Wodociągi Miasta Krakowa is a water supply and sewage management company that provides services such as water supply agreements, property connections to water and sewage networks, and the construction of water and sewage infrastructure. They also conduct water and sewage testing and offer technical opinions and confirmations related to their services. Additionally, the company engages in educational activities for the residents of Krakow regarding water quality and conservation.

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#2

Miejskie Przedsiębiorstwo Wodociągów I Kanalizacji

S.A.

Miejskie Przedsiębiorstwo Wodociągów I Kanalizacji is a water supply and sewage company based in Wrocław. It provides services related to water distribution and manages water supply interruptions due to planned maintenance and emergency repairs on the water network. The company informs customers about potential water outages in specific areas during scheduled work.

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#3

Zakład Wodociągów I Kanalizacji

sp. z o.o.

Zakład Wodociągów I Kanalizacji sp. z o.o. w Łodzi manages water supply and sewer infrastructure in Łódź. The company modernizes and expands networks, builds sanitary sewers, and repairs canals.

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#4

Górnośląskie Przedsiębiorstwo Wodociągów

S.A.

Górnośląskie Przedsiębiorstwo Wodociągów is a company that produces and wholesale supplies drinking water for 3.5 million residents of the Silesian agglomeration. It operates a reliable ring system with nearly 900 km of main network and eight water treatment stations. The company also invests in renewable energy, including the construction of photovoltaic installations.

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#5

Miejskie Wodociągi I Kanalizacja w Bydgoszczy

sp. z o.o.

MWiK in Bydgoszcz is the municipal water and sewerage operator, treating and supplying water and collecting and treating wastewater in the city. It manages local water and sewer infrastructure and works on rainwater retention and management.

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#6

Katowickie Wodociągi

S.A.

Katowickie Wodociągi is a company that supplies water to residents and businesses in Katowice. It also manages the collection and treatment of wastewater from Katowice, Siemianowice Śląskie, Czeladź, and parts of Sosnowiec. Additionally, the company offers services such as electronic invoicing and SMS notifications regarding water supply interruptions.

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#7

Zakład Wodociągów I Kanalizacji

sp. z o.o.

Zakład Wodociągów I Kanalizacji is a water supply and sewage company based in Szczecin. It provides services related to water distribution, including billing, meter legalization, and electronic customer service through an e-office platform. The company also offers information on water quality and current tariffs for its customers.

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#9

Aqua

S.A.

Aqua is a water supply company based in Bielsko-Biała that provides services related to water distribution and wastewater management. It offers customer services such as notifications about water supply interruptions and the ability to report meter readings or issues through an online platform. Additionally, Aqua will implement structured invoicing using the National e-Invoice System starting February 1, 2026.

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#10

Przedsiębiorstwo Wodociągów I Kanalizacji Okręgu Częstochowskiego

S.A.

Przedsiębiorstwo Wodociągów I Kanalizacji Okręgu Częstochowskiego Spółka Akcyjna W Częstochowie is involved in water supply and sewage management, providing services related to water quality control and wastewater treatment. The company operates multiple water intakes and sewage treatment plants in the region. Additionally, it engages in educational initiatives related to water conservation and environmental protection.

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#13

Przedsiębiorstwo Wodociągów I Kanalizacji

sp. z o.o.

Przedsiębiorstwo Wodociągów i Kanalizacji w Gliwicach (PWiK Gliwice) provides residents with water and wastewater services, network connections and contract administration. The company offers laboratory services, tariffs, water parameters, forms and applications, plus water outage and failure notices and an electronic customer office with invoice viewing, online payments and water-meter readings.

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#15

Sosnowieckie Wodociągi

S.A.

Sosnowieckie Wodociągi is a water and wastewater utility supplying water and collecting sewage in Sosnowiec. It monitors water quality at the Maczki and Goczałkowice intakes and operates the Radocha II wastewater treatment plant.

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#18

Przedsiębiorstwo Wodociągów I Kanalizacji

sp. z o.o.

PWiK Wodzisław Śląski supplies water and provides sewerage services in Wodzisław Śląski and part of Radlin. It also handles water meters, including readings and their legal verification.

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#19

Chorzowsko-Świętochłowickie Przedsiębiorstwo Wodociągów I Kanalizacji

sp. z o.o.

Chorzowsko-Świętochłowickie Przedsiębiorstwo Wodoc is a company that provides water supply and wastewater management services for the residents of Chorzów and Świętochłowice. It also conducts water quality testing for the Silesian community and operates a wastewater treatment plant that generates energy from biogas. Additionally, the company is involved in enhancing cybersecurity measures within its operations.

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