Vodoopskrba i odvodnja

Vodoopskrba i odvodnja d.o.o. (abbreviated ViO) is a Croatian utility company and a member of Zagreb Holding, the municipal holding group of the City of Zagreb. It was established in 1995 through the merger of the water supply company Vodovod and the sewerage company Kanalizacija. The company provides public water supply and wastewater drainage services for the City of Zagreb as well as for Samobor, Sveta Nedelja and the municipality of Stupnik. Its main activities include abstraction, distribution and delivery of health-safe drinking water, water quality control, wastewater drainage, and the maintenance and supervision of water supply and sewerage systems. ViO's water supply operations trace their origin to 7 July 1878, when Zagreb's first municipal waterworks was put into operation based on the idea of engineer Melkus. At that time the system had a capacity of 53.2 litres per second and a network length of 3.9 km, serving 11,150 people. Zagreb sits on the gravelly deposits of the Sava River, which are rich in naturally filtered groundwater; this water is drawn from wells, disinfected with chlorine and distributed to consumers. Today abstraction takes place at seven water pumping stations with 44 wells, and a network 3,800 km long supplies around 900,000 inhabitants in an area stretching from Samobor to Vrbovec. The most significant pumping sites are Mala Mlaka, Petruševec, Sašnak and Strmec. On the wastewater side, construction of Zagreb's systematic sewerage system began in 1892 with the building of a drainage canal discharging into the Sava near Žitnjak and the redirection of the Medvešćak stream from Tkalčićeva Street to Ribnjak. The first main drainage canal was located near Petruševec and was extended to Ivanja Reka between 1928 and 1930. The expansion of the sewerage network in the 1960s, particularly on the right bank of the Sava, and the construction of pumping stations enabled the development of three independent sewerage systems in the city. Today Zagreb has more than 2,200 km of public sewers, with systematic cleaning and maintenance of stormwater drainage and monitoring of sewer quality through camera inspections. In 2007 Vodoopskrba i odvodnja became a branch of Zagreb Holding, and since 2013 it has operated as an independent company. Pursuant to a decision of the Zagreb City Assembly in January 2024, it took over management of the Central Wastewater Treatment Plant of the City of Zagreb from August 2024. The current director of the company is Marko Blažević. The Central Wastewater Treatment Plant project (CUPOVZ) was the first wastewater treatment concession in Croatia, allowing Zagreb to comply with European Union environmental standards; based on the concession agreement between the City of Zagreb and Zagrebačke otpadne vode, the plant was designed and completed in 2007, and ZOVuip d.o.o. was responsible for its management and maintenance until management was transferred to ViO in 2024.

Vodoopskrba i odvodnja d.o.o. (ViO) was established in 1995 through the merger of the water supply company Vodovod and the sewerage company Kanalizacija. It is one of the members of Zagreb Holding, the municipal holding company of the City of Zagreb. The company provides public water supply and wastewater drainage services for the City of Zagreb, Samobor, Sveta Nedelja and the municipality of Stupnik. Its main activities include abstraction, distribution and delivery of health-safe water, quality control, wastewater drainage, and maintenance and supervision of water supply and sewerage systems. The history of water supply in Zagreb is closely tied to the city's development. The key date is 7 July 1878, when the first municipal waterworks was put into operation based on the idea of engineer Melkus. At that time the waterworks had a capacity of 53.2 litres per second and a network length of 3.9 km, supplying 11,150 people. Zagreb lies on the gravelly deposits of the Sava River, which are rich in naturally filtered groundwater; this water is drawn from wells, disinfected with chlorine and distributed to consumers. Today abstraction is carried out at seven water pumping stations with 44 wells, and a network 3,800 km long supplies around 900,000 inhabitants in an area from Samobor to Vrbovec. The most significant pumping sites are Mala Mlaka, Petruševec, Sašnak and Strmec. The system has been key to a safe and reliable water supply in Zagreb from 1878 to the present. Construction of the systematic sewerage system in Zagreb began in 1892 with the building of a drainage canal discharging into the Sava near Žitnjak and the redirection of the Medvešćak stream from Tkalčićeva Street to Ribnjak. The first main drainage canal was located near Petruševec and was extended to Ivanja Reka between 1928 and 1930. The construction of this canal enabled the further development of the city's drainage, including the main Branimir canal and the northern canal in Ilica. The expansion of the sewerage network in the 1960s, particularly on the right bank of the Sava, and the construction of pumping stations enabled the development of three independent sewerage systems in the city. Today Zagreb has more than 2,200 km of public sewers, with systematic cleaning and maintenance of stormwater drainage and monitoring of sewer quality through camera inspections. The Central Wastewater Treatment Plant project (CUPOVZ) was the first wastewater treatment concession in Croatia, enabling Zagreb to comply with European Union environmental standards. Based on the concession agreement between the City of Zagreb and Zagrebačke otpadne vode, the plant was designed and completed in 2007, and ZOVuip d.o.o. was responsible for its management and maintenance until management was transferred to ViO in 2024. In 2007, Vodoopskrba i odvodnja became a branch of Zagreb Holding, and since 2013 it has operated as an independent company. Pursuant to a decision of the Zagreb City Assembly in January 2024, it took over management of the Central Wastewater Treatment Plant of the City of Zagreb from August 2024. The current director of the company is Marko Blažević.

• 2024

  Zagreb City Assembly decides ViO to take over management of the Central Wastewater Treatment Plant.

• 2024

  ViO takes over management of the Central Wastewater Treatment Plant of the City of Zagreb.

• 2013

  ViO begins operating as an independent company.

• 2007

  ViO becomes a branch of Zagreb Holding; Central Wastewater Treatment Plant designed and completed.

• 1995

  Vodoopskrba i odvodnja founded through merger of Vodovod and Kanalizacija.

• 1960

  Expansion of the sewerage network, particularly on the right bank of the Sava, and construction of pumping stations.

• 1928

  First main drainage canal extended to Ivanja Reka (completed 1930).

• 1892

  Construction of the systematic sewerage system in Zagreb begins.

• 1878

  First municipal waterworks in Zagreb put into operation, capacity 53.2 l/s, network 3.9 km, serving 11,150 people.

Municipal public utility providing regulated water supply and wastewater services as part of Zagreb Holding.

• Drinking water supply

• Wastewater drainage

• Wastewater treatment

• Water quality control

• Sewer maintenance and inspection

• Drinking water delivery by tanker

• Septic tank emptying

• Storm drain cleaning

1. 1Naslovna - VIO d.o.o.vio.hr
2. 2Vodoopskrba i odvodnjawikidata.org
3. 3Vodoopskrba i odvodnjahr.wikipedia.org