National Water Service is a locally trusted provider of whole-home water treatment systems, professional plumbing services, and well pump installation and repair. We serve homeowners and businesses throughout Maryland, Washington DC, and Northern Virginia with customized solutions designed for local water conditions.
From improving water quality and protecting plumbing systems to restoring water pressure and handling emergencies, our experienced technicians deliver reliable, long-term solutions backed by over 47 years of service.
We provide residential and commercial water treatment solutions to improve water quality, protect plumbing systems, and ensure clean, safe water throughout your home or business.
From everyday plumbing repairs to complex mechanical projects, our experienced plumbers deliver reliable solutions backed by decades of trusted workmanship.
Our licensed plumbers handle residential and commercial plumbing needs across Maryland, DC, and Northern Virginia.
We specialize in well pump installation, repair, and troubleshooting to ensure reliable water pressure and uninterrupted water supply for homes and businesses.
Serving homes, farms, and commercial properties across the region.
Based in Woodbine, MD — providing water treatment, plumbing, and well pump services across the region.
