Does an NC Aerobic System Need a Maintenance Contract?

Yes, when Table XXXII of 15A NCAC 18E .1301(b) assigns the system to a Management Entity. It assigns every Type IV, V, and VI system to a private certified operator or a public Management Entity with a certified operator. Aerobic treatment units are permitted as advanced pretreatment, such as Type Va or Type Vc (an RWTS meeting NSF/ANSI 40).

Under 15A NCAC 18E .1303(b), the operation and maintenance contract “shall be in effect for as long as the system is in use,” and it “shall be executed between the system owner and a Management Entity prior to the issuance of an OP.” For advanced pretreatment, .1302(c) requires the owner to give the local health department (LHD) proof of the contract before the Operation Permit (OP) is issued or re-issued. For a proprietary unit, the contract must be with the manufacturer, its representative, or a Management Entity it authorized in writing.

Summarizes public rules as of Oct 8, 2026; not legal advice; verify with your local health department.

What does the rule actually say?

The contract requirement is in the owner-responsibilities rule. 15A NCAC 18E .1303(b) reads:

“A contract for operation and maintenance of a wastewater system required to be maintained by a Management Entity, as specified in Table XXXII of Rule .1301(b) of this Section, shall be in effect for as long as the system is in use. A contract shall be executed between the system owner and a Management Entity prior to the issuance of an OP, unless the system owner and Management Entity are the same. The contract shall include: (1) specific requirements for operation, maintenance, and associated reporting; (2) responsibilities of the owner; (3) responsibilities of the Management Entity; (4) provisions for notification to the LHD by the owner and Management Entity upon termination of the contract; and (5) other requirements for the continued performance of the system, as determined by the Management Entity, LHD, and Department, as applicable.”

Three points follow from that text:

1. The trigger is the system type. Table XXXII decides whether a Management Entity is required.
2. The term is open-ended. The contract runs “for as long as the system is in use,” not for a permit period.
3. The contents are set. Items (1) through (5), including a termination-notice provision, must appear.

Which systems need a Management Entity?

15A NCAC 18E .1301(b) states: “System management in accordance with Table XXXII shall be required for all systems installed or repaired after July 1, 1992. System management in accordance with Table XXXII shall also be required for all Type V and VI systems installed on or before July 1, 1992.” Under .1301(c), a system with several components is “classified by their highest or most complex system classification type.” For the type-by-type list and inspection frequencies, see How often are NC systems inspected?.

Requirement	Rule	What the text requires
Contract in effect	.1303(b)	“for as long as the system is in use”
Contract timing	.1303(b)	Executed “prior to the issuance of an OP”
Proof to LHD (advanced pretreatment)	.1302(c)	Documentation before the OP is issued or re-issued
Proprietary system contract holder	.1302(c)	Manufacturer, representative, or Management Entity authorized in writing
Permits withheld without one	.1305(a)	No IP, CA, or OP for Type IV, V, or VI systems
Operator certification	.1304(a)	At minimum, “certified as a subsurface operator”
OP term, Type V and VI	.0205(g)	OP “shall expire five years after being issued”

Who can hold the contract for a proprietary system?

15A NCAC 18E .1302(c) reads:

“Prior to the issuance or re-issuance of an OP for an advanced pretreatment system, the owner shall provide to the LHD documentation that a contract for operation and maintenance of the system is in place with a Management Entity. For proprietary advanced pretreatment systems, the contract shall be with either the manufacturer, manufacturer’s representative, or a Management Entity authorized in writing by the manufacturer or manufacturer’s representative to operate the system.”

For non-proprietary advanced pretreatment, the same paragraph says the contract “shall be with an operator certified in accordance with Rule .0303(e) of this Subchapter for the classification indicated on the OP.” Rule .1712(a) adds that Management Entities “shall be authorized in writing by the manufacturer when required in the PIA Approval,” and .1712(b) requires manufacturers to give the Department and LHDs a list of authorized Management Entities, updated annually.

What is a Management Entity, and who counts as a certified operator?

Rule .0105(58) defines the Management Entity as “the person, entity, company, or firm designated by the owner of the wastewater system who has primary responsibility for the operation of a wastewater system.” It “may be the owner, a public Management Entity, a certified operator, a management company, or an entity that employs certified operators,” and it “is or employs the operator in responsible charge for the wastewater system.”

Rule .1304(a) sets the floor for the operator: “the operator shall, at a minimum, be certified as a subsurface operator in accordance with G.S. 90A, Article 3, and 15A NCAC 08G.” Rule .0303(f) adds that the Management Entity, or its employees, “shall hold a valid and current certificate or certifications as required for the system from the Water Pollution Control Systems Operators Certification Commission.” Certification is administered through NC DEQ’s Operator Certification program.

What happens if there is no contract?

The LHD cannot issue permits. 15A NCAC 18E .1305(a) states: “No IP, CA, or OP shall be issued for Type IV, V, or VI systems, unless a Management Entity of the type specified in Table XXXII in Rule .1301(b) of this Section is authorized and operational to carry out operation and maintenance requirements for the wastewater system as set forth in these Rules and the OP.” The OP itself lists “the requirement for a contract with a Management Entity, as applicable” (.0205(c)(7)). For what happens when a contract ends, see What happens when an NC operator contract ends?. More North Carolina guides are on the North Carolina hub.

Sources

• 15A NCAC 18E, Wastewater Treatment and Dispersal Systems (Rules .0105, .0205, .0303, .1301–.1305, .1712; Amended Eff. June 1, 2026): http://reports.oah.state.nc.us/ncac/title%2015a%20-%20environmental%20quality/chapter%2018%20-%20environmental%20health/subchapter%20e/subchapter%20e%20rules.pdf
• NC DHHS, On-Site Water Protection Branch: https://ehs.dph.ncdhhs.gov/oswp/
• NC DEQ, Operator Certification: https://www.deq.nc.gov/about/divisions/water-resources/operator-certification

Last verified: 2026-10-08. Summarizes public rules as of Oct 8, 2026; not legal advice; verify with your local health department.

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