Europe's largest economy is battling soaring energy costs due to reduced supplies of Russian natural gas and some landlords are rationing hot water.
Vonovia, Germany's largest residential landlord, said it would lower tenants' heating to 17 degrees during the night to cut costs.
Tenants in Dippoldiswalde will only be able to take a hot shower between 4am and 8am, 11am and 1pm and 5pm to 9pm after the housing association said it would cut back on hot water.
Russian sanctions have caused German energy bills to go up.
Germany moved to stage two of its emergency gas plan in June.
In response to European sanctions, Russia began to reduce flows to Europe. On June 14, the Russian state-controlled energy giant said it was cutting supplies of natural gas to Germany.
Berlin fears that gas shortages will get worse if Russia doesn't restart flows through the line after 10 days of maintenance.
Several areas across Germany have already started to prepare for the worst, even though the final stage of the plan would involve the government rationing gas.
The hot water is being turned off in more than 80 schools and 60 gyms.
The swimming pool complex in Dsseldorf has been closed.
The temperature of Berlin's outdoor pools has been lowered, and the city of Cologne has also lowered its street lighting time.
Robert Habeck, Germany's economy minister, said that the situation on the gas market is tense.
Local governments in Cologne and Dsseldorf were contacted by Insider.