Tankers and emergency pipeline protect Bad Bayersoien water supply

A milk tanker and an emergency pipeline are helping protect the drinking-water supply in the Bavarian village of Bad Bayersoien, BR reported. Heat, prolonged drought and low groundwater levels have left the village’s own spring and well unable to meet demand.

Bad Bayersoien currently needs about 370 cubic metres of drinking water a day. Its spring normally produces seven litres per second on average and up to 20 litres during peak periods. At present, however, it is producing only about two litres per second, or roughly 180 cubic metres a day, according to Andreas Schechinger, a geologist at the Weilheim water management office.

A tanker from Saulgrub and Rottenbuch is now arriving several times a day. A full day of deliveries provides about 150 cubic metres of water, Mayor Eberhard Steiner said. The operation costs more than 1,000 euros a day, a cost that will ultimately be passed on to residents.

Without the tanker, the municipality might have to consider shutting off the water supply at certain times, Steiner said. A storage reservoir with a capacity of 750 cubic metres has so far helped secure supplies at weekends, provided it can be filled.

Clay deposits limit the water supply

The area’s geology is making the shortage worse. Moraines, or glacial deposits, contain alternating layers of material that do not carry water and pockets of gravel that hold limited amounts of it, Schechinger said.

These gravel pockets do not provide large underground flows. As the water level falls, they deliver less. The catchment area is small and the groundwater reservoir is not highly productive. Although similar shortages have occurred before, Schechinger said, they had never reached this scale.

High temperatures, prolonged drought and insufficient groundwater recharge over several years have intensified the situation.

Emergency pipeline scheduled for late August

At the same time, workers are laying a roughly two-kilometre emergency pipeline from Saulgrub to Bad Bayersoien. Before it can carry water, the pipeline must be kept clean during construction, flushed and disinfected.

The water from Saulgrub will also be disinfected again in the reservoir. Hansjörg Wiesböck, who is responsible for crisis management at the district health office, said this process should ensure that the water remains safe to drink. If work proceeds as planned, the pipeline will begin operating at the end of August.

The municipality has already switched from appeals to enforceable restrictions on water use. Village fountains have been shut off, Kneipp pools have been drained and residents have been asked to conserve water. Under an order issued on Monday, the municipality has set times for watering gardens, banned lawn watering and prohibited car washing.

According to Schechinger, several similar cases have now emerged in the region’s five districts, particularly in smaller municipalities that rely on a single source and lack a second well or a connection to another water network.