Are you looking for a good plumber in The Hague? For more than 80 years in business with different types of services: leaks, boiler repairs, plumbing, roofing, gas and tank installations. Technisch Bureau W. Janssen is an all-round plumbing company known for its quality and good service. All the above work is carried out by specialized personnel. Our staff has all the knowledge and materials to deliver high-quality work.