Specialized water services are important in Northwest Washington because the water in our region is particularly problematic. Water problems, even for homes and business on the city water supply, may be more common than you think. Concerns can include chemicals like Chlorine and Trace minerals like copper and iron. Well water is especially problematic in Northwest Washington. Concenrs include bacteria, nitrates, sulfur, tannins,  and arsenic. To keep your water clean, Culligan provides the following services: