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Drinking water supply to 300,000 people – thanks to KSB pumps

Spannenburg is home to the biggest drinking water treatment plant in the Netherlands. KSB pumps supply several millions of litres of drinking water to over 300,000 people every day.

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The project: The biggest drinking water treatment plant in the Netherlands

Spannenburg in the province of Friesland is home to the biggest drinking water treatment plant operated by the Vitens company in the Netherlands. Every day the company treats several millions of litres of water to supply to over 300,000 people.

The customer: Drinking water supplier Vitens, Netherlands

Via its 49,000 kilometre network of pipes, Dutch water company Vitens supplies 330 million cubic metres of drinking water to around 5.6 million customers every year. Vitens is the largest drinking water supplier in the Netherlands.

The challenge: Clean drinking water for 300,000 people

Due to the country's geography, life in the Netherlands is strongly influenced by water. In addition to protection against flooding, the Netherlands has been focussing on the development of efficient and sustainable drinking water systems for many years. Systems with long-term reliability are needed for extracting, treating and supplying water to the people.

The priority of Vitens as a water supplier is to provide its customers with first-class water quality at all times – with maximum efficiency and cost-effectiveness. From water extraction and treatment through to distribution, it must be ensured that all processes are designed to be as safe, sustainable and economical as possible.

The solution: The Spannenburg drinking water treatment plant

To meet these objectives, the company works closely together with independent institutes, the national authorities as well as partner companies and suppliers like KSB.

For its drinking water treatment plant in Spannenburg, Vitens opted for six Omega volute casing pumps and services from KSB. Positive experiences from previous joint projects with KSB were a key factor in this decision.

Today, the drinking water treatment plant supplies several million litres of fresh drinking water to over 300,000 people in the Netherlands every day.

“Thanks to the excellent support provided by KSB, we were able to choose the right pumps for our processes. KSB pumps impress with their long service life and efficiency. The total cost of ownership also plays an important role for us. As the pumps operate extremely reliably, we haven’t yet needed to contact KSB’s service department.”

Jan Jager, technical specialist at Vitens

Data I Facts I Figures

Location: Spannenburg, Netherlands

Client: Vitens

Application: Water treatment

Project data: 

  • KSB products used:
  • 6 x Omega pumps
  • Fluid handled:
  • Water
  • Output: 25 million m3/year

Products used



Single-stage axially split volute casing pump for horizontal or vertical installation, with double-entry radial impeller, mating flanges to DIN, EN or ASME.

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