Water in Netherlands next to pastures and farmlands often had high levels of toxicity, meaning it was treated as chemical waste. Because of strict regulations got better. Still happens to certain rivers. Had natural parc next to river where I get my meat call back meat because of too high levels of toxicity just last year.

Certain factories here also still allowed to dump chemicals which in other countries are not allowed etc.

Next to that, in certain areas here residential areas and fruit trees mix. So even with limited spraying and limited wind, you are sitting in the garden while tractor is spraying the trees a few meters from you.