Berlin-Tegel (Germany)

The site is located in the northwest of Berlin, where three infiltration ponds in the catchment area of Tegel Water Works are surrounded by about 40 production wells. The site is operated by the local water utility (Berliner Wasserbetriebe). Aquifer recharge started in the late 1950s. Since the 1960s, three infiltration basins have been continuously used for infiltration. Surface water from the nearby Tegel Lake is used as a water source, pre-treated during summer via filtration through a micro strainer (pore size diameter of 28 µm) to prevent clogging by algae.

 

Impact of this MAR site on ambient groundwater can be found here.

Risk assessment for this site can be found here.

 

 

MAR profile:

 

Attribute

BERLIN – TEGEL

General information

Country

Germany

City

Berlin

Site name

Berlin Tegel Infiltration ponds

Operator name

Berliner Wasserbetriebe

Type of MAR

Infiltration Ponds 

Year commenced

1960`s 

Current status

Full operation

Map coordinates

52.58/ 13.27

Operational scale (Mm3/a)

~ 12

Objective

Drinking water production

Capture zone

Influent source

River water

Pre-treatment

Source water treatment before recharge

Micro strainer

Recharge

No of recharge facilities

3 infiltration ponds

Hydraulic loading rate (m3/m2 d)

1-4

Recharged volume (Mm3/a)

~ 9

Sub-surface

Residence time (d)

Residence time of recharged water in the sub-surface  until recovery

Mean > 50 days

 

Aquifer properties

Range of hydraulic conductivity representative for the target aquifer (m/s)

1×10-4 – 1×10-5

Lithology of target aquifer

porous

Thickness of unsaturated zone (m)

Few m

Thickness of target aquifer (m)

Up to 50 m

Recovery

Distance of recovery wells from point of recharge (m)

100 – 600 m

Recovered volume (m3/a)

21 Mm3/a (also bank filtrate)

Recovered infiltrate (%)

Average percentage of recovered infiltrate (in case of bank filtration share of bankfiltrate in abstraction wells)

80 -100

No of recovery facilities

44

Post-treatment

Water treatment after recovery

Aeration and slow sand filtration

End-use

 

Final use of water recharged by the facility

domestic (drinking water)