Here's where the most PFAS chemicals were detected in all of Sweden

The environmentally harmful PFAS chemical trifluoroacetic acid, or TFA, has spread to groundwater in many parts of Sweden.

250 locations have been tested, and in over 90% of cases TFA was detected. Emissions from agriculture are thought to be behind this.

But a farmer near the measuring station that recorded the highest amount of TFA tells Swedish Radio News pesticides containing the chemicals are necessary. ...