Wyes and Wherefores?

The river Wye, on the English-Welsh border, has been subject to algal blooms, killing its water organisms. These blooms are at least partly caused by poultry farms on the river bank. They spread their manure on the surrounding fields, which is washed into the Wye. Algal growth follows (https://www.theguardian.com/environment/2023/feb/03/tesco-chicken-supplier-river-wye-avara-foods-manure-pollution). Campaigners maintain that the poultry farms (such as Avara Foods, a leading supplier of chicken to the Tesco supermarkets) should make reparations to help clean up the Wye. Polluters should pay, even if it increases the price of chicken!