Leak Detection in Rockville, MD

Is my home on City of Rockville water or WSSC Water?

Check your bill or the City's Water Service Provider Map. The City water system covers roughly 70 percent of Rockville, drawing from the Potomac River and treating it at the City's own plant with chlorine disinfection. The rest of the city is served by WSSC Water. The answer matters in two ways: emergencies go to different numbers, and plumbing permits come from different offices. City customers reach the 24-hour emergency line at 240-314-8567 for water main breaks and sewer backups; WSSC customers call 301-206-4002.

What are the signs of a hidden leak in a Rockville house?

Rockville's median home was built in 1980, a mix of postwar subdivisions like Twinbrook and newer development along the I-270 corridor. In older houses, look for brown stains on basement ceilings, damp spots around the water heater and soft floors near bathrooms. In newer ones, the usual suspects are appliance hookups, toilet fill valves and fittings behind laundry boxes. In either, the clearest sign is a meter that keeps moving when every tap, the dishwasher and the ice maker are off. A water heater that seems to run constantly can point to a leak on the hot side.

Who issues the permit if the leak needs a real repair?

It follows the water provider. Rockville's own permit guide says addresses on City water apply to the City's Department of Community Planning and Development Services (CPDS), while addresses on WSSC water get plumbing permits from WSSC Water Permit Services. Fixing a dripping cartridge or a toilet usually needs no permit, but replacing a section of service line or rerouting supply piping often does. A plumber who works in Rockville regularly will know which office applies once you confirm your provider.

On lead, the City has completed a service line material inventory and notified customers; it says it is responsible for removing lead pipe, while owners share responsibility for lead in home plumbing. For WSSC-served addresses, WSSC says it removed all known lead pipe from its distribution system and publishes an inventory map.

One Rockville note

When a test shows water escaping between the meter and the house, report it to the provider that bills you before the digging starts. That way the utility can confirm the break is not on its portion, and the plumber can plan the repair and the permit with the right office from the beginning.