# Public Utilities (GPU)

## Title 25. Rates and Charges

### Subtitle 4. System Development Charge

#### Section 25-401

(a) In this subtitle the following words have the meanings indicated.

(b) "Apartment unit" means a single family housing unit that:

  (1) is one of multiple units within a building;

  (2) contains at least one full bath and one full kitchen; and

  (3) does not contain more than two toilets.

(c) "Fixture unit" means the assigned value for a plumbing fixture or group of plumbing fixtures, as set forth in the Commission's plumbing and gas fitting regulations, that is standardized with a common lavatory having an assigned value of one based on its probable discharge into the drainage system or hydraulic demand on the water supply.

(d) "New service" means:

  (1) a first time connection of a property to the Commission water or sewer system, including:

    (i) a direct connection of an improvement or building; or

    (ii) a connection of the improvement or building through an existing on-site system; or

  (2) a new connection or increased water meter size for a property previously or currently served by the Commission if the new connection or increased meter size is needed because of a change in the use of the property or an increase in demand for service at the property.

(e) "Property" means an improvement or a building on a lot or parcel of land that contains plumbing fixtures.

(f) "Toilet" means a water closet, as set forth in the Commission's plumbing and gas fitting regulations.

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Md. Code Ann., Pub. Util. (as displayed at mgaleg.maryland.gov, October 16, 2026)