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) |