Peeking through the trees you can spot the Wasserwerk Sande. It stands as a testament to Hamburg’s commitment to providing clean water.
The Wasserwerk Sande is more than just a building. It is a vital part of the city’s infrastructure. Let’s dive into the story behind this essential facility.
Hamburg’s drinking water comes exclusively from groundwater. Rainwater filters through layers of soil. Sand and gravel filter out dirt. Bacteria remove organic substances and pesticides. The water is enriched with minerals that neutralize acids. After at least 50 days, the water reaches the groundwater layer.
From the groundwater layer, the water is free of pathogens and pollutants. It is then pumped to the surface. Vertical filter wells extract water from depths between 20 and 429 meters. Underwater pumps transport this raw water to one of Hamburg’s 17 waterworks. These waterworks supply Hamburg and the surrounding areas. The Wasserwerk Sande is one of these important waterworks.
The raw water contains minerals such as calcium and sodium. It also contains iron, manganese, carbonic acid, and hydrogen sulfide. These substances must be removed before the water is distributed. Iron and manganese can clog the pipe network. Carbonic acid can cause corrosion.
The purification process at the Wasserwerk Sande is natural. First, the raw water is aerated with oxygen. This removes carbonic acid and hydrogen sulfide. Iron and manganese react and form flakes. These flakes are then trapped in sand filters. The filters are regularly rinsed. A small amount of chlorine or chlorine dioxide is added for safety. This protects against microbial contamination.
The result is fresh drinking water. It is stored in clean water tanks, waiting to flow from your tap. Hamburg’s drinking water is strictly controlled. The controls exceed legal requirements to ensure high quality.
So, as you stand before the Wasserwerk Sande, remember its crucial role. It uses natural processes to deliver clean water to Hamburg. This commitment to quality ensures that Hamburg’s water meets the highest standards. The next time you turn on your tap, think of the Wasserwerk Sande and its contribution to your health and well-being.