MAL071 - Tas-Salvatur


Tas-Salvatur is a disused quarry that is being used as a reservoir for water storage and irrigation, located in south-western Malta between Siġġiewi and L-Imqabba. The quarry is owned by the government and has been inactive for over 35 years. It covers an approximate area of 1,150m2 and is capable of holding a maximum of 5 metres of water in height before water is lost through crevasses. The site is accessible by a dirt pathway from a main road. The site is predominantly surrounded by agricultural fields, however, an active quarry lies directly south of the Tas-Salvatur disused quarry. No important community habitats were recorded. Cupressus sempervirens, Opuntia ficus-indica and Capparis orientalis are present growing on the quarry’s walls alongside other rudimental vegetation. The site is not protected by any legislation.

Wetland data

Basic information
Wetland location: Inland
Wetland type: Artificial
Wetland area: 0.10 Ha
Hydrological interaction: -  
Water salinity: Fresh (< 0.5 g/l)
Type of fresh water input: Catchment area (precipitation)
Surface water runoff Other
Open water area (%): 76 - 95
Hydroperiod: Permanent
Geographic information
Census district: Western
Island: Malta
Local council: Is-Siggiewi
Longitude: 14.455790 East
Latitude: 35.850040 North
Biological significance
Biological significance: Low
Ramsar wetland type
Type Coverage (%)
7 -- Excavations; gravel/brick/clay pits; borrow pits, mining pools
Property status
Ecosystem services
Type of ecosystem service Ecosystem service Scale of Βenefit (%) Importance
Regulatory services Flood hazard regulation
Provisioning services Fresh water
Regulatory services Water regulation
Activities on wetland
Activity Intensity
301 = quarries Low
701 = water pollution High
703 = soil pollution High
910 = Silting up Medium
Activities on catchment area
Activity Intensity
100 = Cultivation High
110 = Use of pesticides High
120 = Fertilisation High
130 = Irrigation High
301 = quarries Medium
424 = other discharges High
430 = Agricultural structures High
701 = water pollution High
703 = soil pollution High
Impact Intensity
ES- = Increase in water supply Low
EW- = Increase in wilderness/wildlife values High
PF- = Fertilizer/Excess nutrient pollution High
PP- = Pesticide pollution Medium