Event Title

Delineation of Groundwater Protection Zones for the Gjilan field

Session

Civil Engineering, Infrastructure and Environment

Description

The well field of Gjilan is located in the south-eastern part of Kosovo about 1 km west of Pasjan and 35 km southeast of Pristina, the capital city of Kosovo. It is an important water supply for the city of Gjilan. A total of seven production wells have been drilled into the aquifer for the Water Utility Hidromorava. In Phase V of the Rural Water and Sanitation Support Programme the Project team has prepared a technical study to define the delineation of groundwater protection zones. The groundwater source in Pasjan is partially supplying the inhabitants of Gjilan municipality and Pasjan village with drinking water. The importance of this groundwater source for drinking water purposes and availability of geological, hydrogeological and other data’s were the main elements in the selection of the Pasjan groundwater source as a study area by the project.To delineate Ground Water Protection Zones (GWPZ) 1, 2 and 3 according to Kosovarian regulations a groundwater model is set up to calculate the groundwater flow in the well field. As a pragmatic solution to support and facilitate the implementation of a GWPZ 2 a 50-day-line is calculated. For the Sanitary Protection Zone the whole catchment zone is calculated. As example for the delay of hazardous impacts on the water quality, a 200-day line areas was calculated. Close to wells of the Hidromorava Water Utility, and supplied by the same aquifer, two production wells of the local RC-Cola Company have been identified. The influence and interference is significant only to the extension of the GWPZ 3. Therefore 2 different boarders to the GWPZ 3 have been calculated: Version a includes the 2 wells of the commercial company into the GWPZ 3 , version b excludes the commercial wells. GWPZ 1 are defined as very limited areas of a 10m-square, that have to be fenced. GWPZ 2 are mainly circles of 100 m to 200 m diameter surrounding the production wells. These areas are the minimum areas to be declared Protection zone 2 and requiring consequent protection against chemical and biological contamination. The GWPZ 3 has an E-W extension of ca. 1,8 km, and N-S extension of 2 km. This area needs to be protected against chemical contamination. The Morava river passing the well field area is a main factor of recharge for the wells and therefore requires upstream protection against any contamination. Further the waste dump and an abandoned petrol station close to GWPZ 3 require active cleaning and decontamination action.

Keywords:

Groundwater, Groundwater Protection Zones, Discharge, Water Level

Session Chair

Muhamet Ahmeti

Session Co-Chair

Nol Dedaj and Nexhmi Krasniqi

Proceedings Editor

Edmond Hajrizi

ISBN

978-9951-437-54-7

Location

Durres, Albania

Start Date

29-10-2017 11:00 AM

End Date

29-10-2017 1:00 PM

DOI

10.33107/ubt-ic.2017.58

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Oct 29th, 11:00 AM Oct 29th, 1:00 PM

Delineation of Groundwater Protection Zones for the Gjilan field

Durres, Albania

The well field of Gjilan is located in the south-eastern part of Kosovo about 1 km west of Pasjan and 35 km southeast of Pristina, the capital city of Kosovo. It is an important water supply for the city of Gjilan. A total of seven production wells have been drilled into the aquifer for the Water Utility Hidromorava. In Phase V of the Rural Water and Sanitation Support Programme the Project team has prepared a technical study to define the delineation of groundwater protection zones. The groundwater source in Pasjan is partially supplying the inhabitants of Gjilan municipality and Pasjan village with drinking water. The importance of this groundwater source for drinking water purposes and availability of geological, hydrogeological and other data’s were the main elements in the selection of the Pasjan groundwater source as a study area by the project.To delineate Ground Water Protection Zones (GWPZ) 1, 2 and 3 according to Kosovarian regulations a groundwater model is set up to calculate the groundwater flow in the well field. As a pragmatic solution to support and facilitate the implementation of a GWPZ 2 a 50-day-line is calculated. For the Sanitary Protection Zone the whole catchment zone is calculated. As example for the delay of hazardous impacts on the water quality, a 200-day line areas was calculated. Close to wells of the Hidromorava Water Utility, and supplied by the same aquifer, two production wells of the local RC-Cola Company have been identified. The influence and interference is significant only to the extension of the GWPZ 3. Therefore 2 different boarders to the GWPZ 3 have been calculated: Version a includes the 2 wells of the commercial company into the GWPZ 3 , version b excludes the commercial wells. GWPZ 1 are defined as very limited areas of a 10m-square, that have to be fenced. GWPZ 2 are mainly circles of 100 m to 200 m diameter surrounding the production wells. These areas are the minimum areas to be declared Protection zone 2 and requiring consequent protection against chemical and biological contamination. The GWPZ 3 has an E-W extension of ca. 1,8 km, and N-S extension of 2 km. This area needs to be protected against chemical contamination. The Morava river passing the well field area is a main factor of recharge for the wells and therefore requires upstream protection against any contamination. Further the waste dump and an abandoned petrol station close to GWPZ 3 require active cleaning and decontamination action.