Contamination of PFAS compounds detected in 3% of tested samples from Upper Austria

In a comprehensive investigation spanning from 2021 to 2024, a total of 555 drinking water samples were tested for Per- and Polyfluoroalkyl Substances (PFAS) in Upper Austria. The findings of this study, detailed in the report "PFAS in Upper Austrian Drinking Water" available on the state's website, paint a mixed picture of the current state of Upper Austria's drinking water.

The investigation, funded until the end of the year, covered about two-thirds of the population that receives drinking water from facilities in accordance with the Drinking Water Ordinance. Approximately 75% of the samples did not contain PFAS or had non-quantifiable amounts, indicating a relatively clean drinking water supply. However, concerning levels of PFAS were found in worrying concentrations in the drinking water of private wells, two water cooperatives, and groundwater in the municipalities of Leonding, Pasching, and Hörsching. In 3% of the samples (19 samples), the limit for PFAS was exceeded.

PFAS have been used in various industries and everyday products for decades, making their widespread presence in the environment unsurprising. The substances are persistent and mobile, posing a threat to groundwater reserves and drinking water. The future limit value according to the Drinking Water Ordinance (valid from 12.01.2026 - 0.1 μg/l sum of PFAS-20) was exceeded in eight drinking water supply plants.

Measures are ongoing in the rest of the drinking water supply plants mentioned. In four cases, a connection to public networks with flawless water quality has already been established. Nationwide solutions and financial resources for PFAS renovations are needed to protect groundwater reserves and drinking water in Upper Austria.

It is important to note that private wells are served by a laboratory bus. In about a quarter of the samples, PFAS was below the limit, and in approximately half of the investigated facilities, funding for their PFAS investigation has been utilised.

The goal is to gradually eliminate these chemicals from use. 35,000 liters of PFAS-containing foam have been removed from circulation through a statewide disposal program. The responsibility for financing investigations into PFAS contamination in drinking water from the end of the year lies primarily with the regional government and relevant environmental authorities, but specific details on the exact responsible body or official were not explicitly stated in the provided sources.

A digital map showing all measurement points and results is available along with the report, providing a clear overview of the current situation of PFAS in Upper Austrian drinking water. As the investigation continues, it is hoped that the findings will contribute to a safer and cleaner drinking water supply for all residents of Upper Austria.