Numerous monitoring tests have confirmed consistently good drinking water quality. All test results from the past few days showed no bacterial abnormalities. The drinking water quality once again meets the requirements of the Drinking Water Regulation. It is therefore no longer necessary to boil tap water. 

To lift a boil-water advisory, three consecutive water samples with satisfactory test results are required, each taken at least two days apart. The last samples in this test series were collected on Thursday, October 15. The results have been available since today, Saturday, October 17, and are in compliance with the Drinking Water Ordinance. 

Since Friday, September 25, the water utilities of the state capital of Wiesbaden (WLW) and ESWE Versorgung have been implementing measures to restore drinking water quality and investigate the cause. These measures included extensive pipe flushing, ongoing sampling, and the replacement or isolation of contaminated pipe sections and components. The city’s public health department monitored the process as part of its responsibilities for health monitoring of drinking water. 

“Drinking water quality in Germany is extremely high thanks to regular testing and mandatory reporting requirements,” says Andreas Kowol, Head of the Health Department. “We take reports of possible contamination very seriously. Accordingly, we acted immediately in Wiesbaden as well and took the necessary measures, because protecting the public’s health is our top priority. We are aware that the situation over the past few days has caused significant disruptions to daily life for people in the affected area. We would like to thank the public for their understanding and patience,” says Andreas Kowol, Head of the Health Department. 

Throughout Germany, drinking water is subject to the strictest controls. Quality requirements are defined by laws, guidelines, and regulations. In Wiesbaden alone, well over a thousand drinking water samples are taken each year from the ESWE Versorgungs AG distribution network and undergo various analytical tests. 

In closing, the city once again emphasizes the importance of emergency preparedness. In the event of a large-scale crisis, emergency and response teams cannot assist all businesses, institutions, or residents at the same time. It is therefore advisable to take your own precautions. At wiesbaden.de/notfallvorsorge, the city provides information on how to prepare for exceptional situations.