Collection, Sewerage


According to the Econtext study from February 2012, Cluj County is on the first place in the country at waste water collection. 

In order to protect the environment and the public health in accordance to very strict national regulations aligned to EU Directives, residual and industrial waste waters as well as rain waters need to be collected in a manner that there are no leaks out of the sewerage system and than transported and subjected to a very complex purification processes thus, when their quality is comparable or even better than that of the river waters, they can be eliminated into the rivers without causing environmental problems.

Sewerage networks collect waste and rain waters form all consumers and transports them at the Waste Water Purification Plants. The sewerage network from most of the localities serviced by our Company, as well as from the majority in the country, are of unitary type in 80% of the cases (meaning that the same network takes both waste and rain waters) and only 20% of divisor type (meaning that there are separate networks for waste waters and for rain waters). Generally, the rain water collection system from the streets, consisting in gutters, is not in the administration of our Company but in that of the local authorities.

During 2008 – 2013, within the last investment program, 102 km of sewerage networks were constructed or rehabilitated on 243 streets in the eight municipalities and cities from Cluj and Salaj counties!


They take in the waste waters from multiple sewer networks and transport them to the Waste Water Treatment Plants. They are large dimensions pipes (diameters) and their construction under the cities, many times, involves advanced technologies similar to those used in mining.

Within a strategy with the motto “A clean Somes”, between 1992-1995, the construction of a high capacity sewer main for each area in Cluj-Napoca began, with the purpose of collecting all waste and rain waters previously discharged into Somes Mic River. The works at Somesl Mic right bank sewer main, 2,650 mm in diameter and 2.3 km in length were done in two stages: Abator Square – Iasilor Street, Iasilor Street – Municipal Stadium respectively, using partially shield mining technology. The project included crossing under Somesul Mic River, approximately across Napoca Hotel. The financing sources were made up of CASSA own funds and budgetary funds. As a result of this project finalization, the pollution of Somesul Mic River – a symbol of Cluj-Napoca – was completely eliminated. Within ISPA Cluj Measure (2004 – 2010), a new section 2.3 m in diameter and 1.3 km in length between Iasilor Street and N. Titulescu Blv. servicing Gheorgheni District mainly, was constructed.

During 2008-2013 another 2 km of high capacity sewer mains were constructed and another 16 km were rehabilitated.

At the end of 2013, SOMES Water Company had in its administration 980 km of sewage networks and sewer mains.

Before being discharged into the environment – usually in water courses – waste and rain waters collected from the customers must be purified in order to protect the environment. This complex and costly process takes place in Sewage Plants..

Both the national legislation and the conditions stipulated in the Environment Chapter in Romania’s Adhesion Treaty to the European Union contain a series of extremely severe criteria regarding the waste water parameter level in order for it to be discharged into the environment after purification.

In order to respect these parameters – for which’s nonconformities, the abilitated authorities and institutions apply severe fines – during 2008-2015, SOMES Water Company had to modernize all its 8 urban waste water plants from the towns and cities serviced in Cluj and Salaj Counties.

Currently, the water from downstream in which the waste waters are discharged after being purified is of better quality than upstream.

From the last surveys ordered by SOMES Water Company, 96 % of the serviced population, consider very important the company’s environment protection activity.