Public Utilities (GPU) — Title 24. Plumbing, Waterworks, and Sewer Construction
Statutes in effect as of October 1, 2026.
Subtitle 1. Construction Projects
Md. Code Ann., Pub. Util. § 24-101 (2026)
Title 24. Plumbing, Waterworks, and Sewer Construction
Subtitle 1. Construction Projects
§ 24–101LinkCopy Citation
(a)
(1)
A person shall obtain a permit from the Commission before the person may engage in plumbing, waterworks, or sewer construction in a building or on private property in the sanitary district or areas of Prince George’s County that are not in the sanitary district.
(2)
The person shall pay to the Commission a reasonable permit fee set by the Commission.
(b)
Work performed under a permit authorized by this section shall:
(1)
conform to the Commission’s regulations; and
(2)
be subject to any inspection that the Commission considers necessary.
Md. Code Ann., Pub. Util. § 24-102 (2026)
Title 24. Plumbing, Waterworks, and Sewer Construction
Subtitle 1. Construction Projects
§ 24–102LinkCopy Citation
(a)
(1)
A person shall obtain a permit from the Commission before the person may construct a private or semipublic water supply or sewer system for the use of at least two buildings or premises in the sanitary district or areas of Prince George’s County that are not in the sanitary district.
(2)
The person shall pay to the Commission a reasonable permit fee.
(b)
(1)
The private or semipublic water supply or sewer system shall be installed, maintained, and operated under regulations that the Commission adopts.
(2)
The owner or operator of the system shall pay to the Commission a reasonable supervision and inspection fee that the Commission sets.
(c)
If an owner or operator of a private or semipublic water supply or sewer system fails or refuses to correct, maintain, or operate the system in compliance with the requirements of the Commission, the Commission may:
(1)
make the correction or take over the operation of the system for the period necessary; and
(2)
collect the costs for the correction or operation from the owner or operator.
Md. Code Ann., Pub. Util. § 24-103 (2026)
Title 24. Plumbing, Waterworks, and Sewer Construction
Subtitle 1. Construction Projects
§ 24–103LinkCopy Citation
(a)
(1)
A person shall obtain a permit from the Commission before the person may make a hookup with a water or sewer service line that the Commission constructs or maintains.
(2)
A hookup shall be made under the conditions that the Commission authorizes.
(b)
To prevent or eliminate leakage, loss of water, the unnecessary use of sewers, or other waste of water, the Commission may:
(1)
at a reasonable time, enter a building or premises that has a connection with the water supply or sewer system under the jurisdiction of the Commission; and
(2)
issue an order requiring a change in the plumbing, waterworks, or water or sewer connection that the Commission considers necessary.
Md. Code Ann., Pub. Util. § 24-104 (2026)
Title 24. Plumbing, Waterworks, and Sewer Construction
Subtitle 1. Construction Projects
§ 24–104LinkCopy Citation
(a)
This section does not apply to:
(1)
in Montgomery County:
(i)
an apartment house with fewer than five dwelling units; or
(ii)
a water supply or sewage collection and disposal system constructed:
(1)
to serve only a single building or group of buildings serving as a single farm unit or as a single commercial or industrial establishment;
(2)
by the county, an instrumentality of the county, or the City of Rockville; or
(3)
by a municipality, if the municipality owned and operated the system on June 1, 1965; and
(2)
in Prince George’s County, a water supply or sewage collection and disposal system:
(i)
constructed to serve only a single family residence or a single building; or
(ii)
owned and operated by a municipality on January 1, 1959.
(b)
(1)
This subsection does not apply to Calvert Manor.
(2)
Subject to subsection (c) of this section, a person shall obtain a permit from the Commission before the person may construct, alter, extend, or operate a water supply or sewage collection and disposal system outside the sanitary district in Montgomery County or Prince George’s County.
(c)
(1)
The Commission may not issue a permit under subsection (b) of this section until the Commission approves:
(i)
complete plans and specifications for the construction, alteration, extension, or operation of the water supply or sewage collection and disposal system; and
(ii)
any other information that the Commission requires.
(2)
The Commission shall:
(i)
during construction, inspect all projects for which the permit was issued; and
(ii)
require the construction to conform to the approved plans and specifications.
(3)
The Commission may charge a reasonable permit fee not exceeding 6% of the estimated construction cost for a project described in this section.
(d)
(1)
A person holding a permit under subsection (b) of this section shall submit to the Commission:
(i)
any material change in the plans and specifications; and
(ii)
a statement of the reasons for the change.
(2)
The Commission shall approve and issue a permit for a material change before the person may include the change in the actual construction.
(e)
A water supply or sewage collection and disposal system, including oxidation ponds and sewage lagoons, for which a permit is required under this section shall be installed, maintained, and operated under regulations that the Commission adopts.
(f)
The Commission shall:
(1)
inspect the operations of any water supply or sewage collection and disposal system authorized under this section;
(2)
require the owners or operators of the system to maintain and operate the system in compliance with the Commission’s reasonable requirements and with regard to public health, safety, and comfort;
(3)
set and collect from the owners or operators of the system a reasonable fee for the supervision and inspection of the system; and
(4)
if the owner or operator fails or refuses to correct, maintain, or operate the system in compliance with the Commission’s requirements:
(i)
make the correction or take over the operation of the system for any period necessary; and
(ii)
collect the costs for the correction or operation from the owner or operator.
(g)
The Commission:
(1)
shall adjust its inspection fees accordingly if a municipality in Montgomery County or Prince George’s County:
(i)
owns or operates a water supply or sewage collection and disposal system;
(ii)
performs or has performed bacteriological and chemical analyses on the system by qualified personnel, as approved by the Department of the Environment and the Commission; and
(iii)
files with the Commission a monthly report of the analyses showing that satisfactory operating conditions exist in the system; and
(2)
is not required to duplicate an analysis.
(h)
(1)
If a water or sewage treatment facility is constructed under a Commission permit and operates subject to inspection by the Department of the Environment, the Commission is not required to duplicate the operational inspection functions that the Department of the Environment conducts.
(2)
The Commission may eliminate or reduce its operation and inspection fee in proportion to the eliminated inspection activities.
(3)
All other requirements of the Commission permit for the facility shall be applicable.
(i)
(1)
When a water supply or sewage collection and disposal system authorized under this section is completed, the person constructing the system shall file with the Commission as a permanent record a certified copy of the plans in full, showing the work as built.
(2)
The record shall include the information and be in the form that the Commission requires.
(j)
A person found to have violated this section is not relieved from the requirement to secure and pay for a permit and comply with all other applicable provisions of this section.
Md. Code Ann., Pub. Util. § 24-105 (2026)
Title 24. Plumbing, Waterworks, and Sewer Construction
Subtitle 1. Construction Projects
§ 24–105LinkCopy Citation
(a)
(1)
In those parts of Prince George’s County that are not in the sanitary district, the Commission’s plumbing regulations:
(i)
apply to plumbing installations that began on or after June 1, 1965; but
(ii)
do not apply to plumbing installations that existed on July 1, 1965.
(2)
(i)
The owner of the property where plumbing installations existed on July 1, 1965, is not required to change the plumbing until water or sewer service is obtained from a Commission system.
(ii)
If water or sewer service is obtained from a Commission system, this section and the Commission’s regulations apply to the property and the plumbing as if the property were in the sanitary district.
(b)
(1)
The Commission may enter into an agreement with Prince George’s County under which the county will issue the necessary permit and perform the necessary inspection for and in the name of the Commission in those areas that are not in the sanitary district, if the agreement provides that the plumbing regulations of the Commission will be applied.
(2)
This subsection or an agreement entered into under this subsection does not affect the power of the Commission:
(i)
to adopt regulations to install plumbing in Prince George’s County as the Commission considers necessary for the public health; or
(ii)
to regulate public and semipublic water supply and sewer systems under this section and § 24–102 of this subtitle.
Md. Code Ann., Pub. Util. § 24-106 (2026)
Title 24. Plumbing, Waterworks, and Sewer Construction
Subtitle 1. Construction Projects
§ 24–106LinkCopy Citation
(a)
(1)
Subject to § 12–305 of the Business Occupations and Professions Article, only the Commission may issue licenses to persons to work in the plumbing business in areas of Montgomery County or Prince George’s County under the jurisdiction of the Commission.
(2)
License fees may not exceed the fees set in the Maryland Plumbing Act.
(3)
The Commission shall exercise the authority of the State Board of Plumbing in areas under the jurisdiction of the Commission.
(b)
(1)
A person holding a valid master plumber/gasfitter license or a journeyman plumber/gasfitter license issued by the Commission is entitled to an equivalent license issued by the State Board of Plumbing without examination on presentation of:
(i)
the license issued by the Commission; and
(ii)
a notarized statement of good standing issued by the Commission.
(2)
A person holding a valid master plumber/gasfitter license or a journeyman plumber/gasfitter license issued by the State Board of Plumbing is entitled to an equivalent license issued by the Commission without examination on presentation of the license issued by the State Board of Plumbing.
(3)
Subject to §§ 10–14A–03 and 10–14B–03 of the State Government Article, an individual holding a valid master plumber/gasfitter license in another state is entitled to an equivalent license issued by the Commission without examination on presentation of the license issued by the Commission.
(c)
A license issued to a master plumber/gasfitter or a journeyman plumber/gasfitter in good standing under a reciprocity arrangement by the State Board of Plumbing and the Commission before July 1, 1978, remains in force.
Md. Code Ann., Pub. Util. § 24-107 (2026)
Title 24. Plumbing, Waterworks, and Sewer Construction
Subtitle 1. Construction Projects
§ 24–107LinkCopy Citation
Any new or replacement piping that is buried or installed for the purpose of connecting a building to a water supply system or a sewerage system shall comply with the requirements of § 12–129 of this article.
Subtitle 2. Sewer Cleaning and Sewage Leaks
Md. Code Ann., Pub. Util. § 24-201 (2026)
Title 24. Plumbing, Waterworks, and Sewer Construction
Subtitle 2. Sewer Cleaning and Sewage Leaks
§ 24–201LinkCopy Citation
(a)
(1)
In this section, “sewer cleaning” means the cleaning or clearing of and the removal of stoppages or obstructions in sanitary sewer lines, pipes, and fixtures.
(2)
“Sewer cleaning” does not include any installation, maintenance, extension, removal, or alteration of any pipe, sanitary fixture, or other sewer apparatus.
(b)
This section may not be construed to:
(1)
require a person to have a sewer cleaner’s license to clean a sewer on the person’s own property;
(2)
prevent a person from cleaning a sewer on the person’s own property; or
(3)
apply to or prohibit the cleaning by any person of a sewer or sanitary fixture of any dwelling, commercial or industrial establishment, or premises owned or operated by the person.
(c)
The Commission shall adopt and enforce regulations governing sewer cleaning in sanitary sewer lines, pipes, and fixtures connected to the Commission’s sanitary sewer system.
(d)
(1)
(i)
To qualify for a sewer cleaner’s license, a person need not be a master plumber.
(ii)
A sewer cleaner’s license does not authorize the licensee to engage in the plumbing business other than sewer cleaning.
(2)
The Commission:
(i)
shall require that a person other than a licensed master plumber who is engaged in or represents the person to the public as engaged in sewer cleaning be licensed by the Commission;
(ii)
may require a bond of the licensee to insure compliance with and adherence to the regulations adopted by the Commission;
(iii)
may establish qualifications and examine applicants concerning their competency and qualifications for a license under this section; and
(iv)
may require a reasonable fee for the issuance and renewal of a license in an amount not more than one–half of the fee charged for a master plumber’s license.
Md. Code Ann., Pub. Util. § 24-202 (2026)
Title 24. Plumbing, Waterworks, and Sewer Construction
Subtitle 2. Sewer Cleaning and Sewage Leaks
§ 24–202LinkCopy Citation
(a)
Within 24 hours of the discovery of a leak in a sanitary sewer line, pipe, or fixture that is connected to the sanitary sewer system of the Commission, the Commission shall:
(1)
notify the county and any municipal corporation in which the sewage leak is located about:
(i)
the sewage leak; and
(ii)
the Commission’s intended action concerning the sewage leak; and
(2)
include the following on the Commission’s website:
(i)
notice to the general public about the sewage leak; and
(ii)
the phone number for obtaining additional information from the Commission.
(b)
The Commission shall adopt regulations to implement this section.
Md. Code Ann., Pub. Util. § 24-203 (2026)
Title 24. Plumbing, Waterworks, and Sewer Construction
Subtitle 2. Sewer Cleaning and Sewage Leaks
§ 24–203LinkCopy Citation
(a)
In this section, “public access point” includes a parking lot, playground, picnic area, boat launching ramp, or park.
(b)
Within 24 hours after a leak is reported, the Commission shall post warning signs at each public access point to a waterway that becomes contaminated by a leak in a sanitary sewer line, pipe, or fixture that is connected to the sanitary sewer system of the Commission.
(c)
A warning sign posted under this section shall include:
(1)
the source and date of discovery of the leak; and
(2)
the contact information, including a telephone number, of the Commission for members of the general public to use for obtaining additional information.
(d)
The Commission:
(1)
shall post the warning signs downstream from the leak in accordance with regulations adopted by the Commission; and
(2)
is not required to post any warning sign upstream from a leak.
(e)
The Commission shall adopt regulations to implement this section, including regulations concerning:
(1)
the minimum distance from the source of a leak within which warning signs must be posted; and
(2)
the form and content of the warning signs.