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Emergency Water Main Repair
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3201 Buchanan St., Mount Rainier

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For Service Connections Built with a Mainline Extension:

The following standards will be used when designing and constructing service connections built with a mainline extension in WSSC Rights-of-Way (ROW) on private property:

General Guidelines:

  • A service connection in a WSSC ROW shall extend to the ROW or property line whichever is closest to the main (applies to both small and large sized lines). In all cases the connection should terminate within the WSSC ROW. For rights of way that are entirely within a property, the connection should extend to the edge of the right of way.
  • ROW and property lines shall coincide, whenever feasible, to simplify maintenance and property owner private easement issues (applies to both small and large sized lines).
  • Service Connections shall not terminate closer than 10' to a building. 5' will be permitted in extenuating circumstances as determined by WSSC.
  • For small sized service connections (water services 2” and smaller and 4” gravity sewer services): curb boxes, meter vaults, and clean-outs should be located outside of paving whenever possible. Curb boxes, meter vaults and clean-outs shall be located at the ROW or property line whichever is closest to the main. If the ROW and property line do not coincide: the area between the property line and the ROW can be used to avoid paving. Additional ROW should be pursued if pavement can be avoided.
  • For large sized service connections (water services greater than 2", and sewer services greater than 4”): paving is not a consideration.
  • For commercial properties, ROW should not be extended to limits of paved parking lots.

Paving Guidelines:

In cases where the service connection termination point is in future or existing paving, a traffic-bearing water or sewer access assembly is required. Any paved area (pathways, parking lots, paved roads, alleys, etc.) requires a traffic bearing water or sewer access assembly.

  • Curb boxes in accordance with WSSC Plumbing Regulations
  • Clean-out cover assembly in accordance with Standard Details S5.1
  • Meter vaults in accordance with Standard Details W5.7, 5.8 and 5.9

Maintenance Guidelines:

WSSC will maintain the portion of the service connection constructed by WSSC.

For Service Connections Built From Existing Mains:

The following standards will be used when designing and constructing service connections built from existing mains in WSSC Rightsof-Way (ROW) on private property but not part of an SEP job.

  • As of July 1, 1999, Maryland State Law, Article 29, Section 3-101.1, requires the Applicant to build all service connections to the WSSC system except where the development consists of one single family house.
  • For one proposed or existing single family house (with or without a health hazard) where the service connection is to be built from an existing main in WSSC (ROW), the Master Plumber is responsible for exposing the WSSC main and calling the Customer Care Team to provide tap and corporation stop on the water main and/or tap and saddle for WSSC sewer main. For all ROW service connections built from an existing main, there is no service connection pipe length to be installed or maintained by WSSC. WSSC maintains the tap only. All service pipe length is considered the property owner’s responsibility.
Last Modified: July 10, 2026, 1:07 pm EDT