What does industrial water cost?
As long as there is no separate pipe network for drinking water and service water, the cost of tap water is always the same regardless of whether it is used as service water or drinking water. Depending on the region and provider, these depend on various factors, such as the local infrastructure and the operating costs for water treatment.
When it comes to using rainwater as service water for watering plants or flushing toilets, the costs are lower than for tap water as no complex treatment is required. Rainwater is free if it is collected on your own property.
Additional costs are incurred for the use of treated wastewater as service water, as the treatment is usually decentralised and much more complex than for rainwater.