Groundwater in Finland is known to be one of the highest quality in the world. Animals drink the same water as people. There are quality requirements and targets set for drinking water. There are 60 measurable properties. Today, ordinary people can also check the quality of their drinking water online. The farms also use their own wells, the water quality of which must be checked at least every 3 years in accordance with legal requirements.

Washing and disinfecting water lines during batch breaks is a common practice in Finnish broiler farms. In addition to washing, it is important to disinfect water lines during each batch break, because a slime layer (biofilm) accumulates in the water pipes, where bacteria (including clostridia) can grow. This deteriorates the water quality and can also impair the functioning of the nipple line system.