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North Carolina Statewide Rule

North Carolina Rainwater Harvesting State Law

Few RestrictionsApplies statewide across North Carolina (2026)

Key Facts

Statute
N.C.G.S. 143-355.5
Outdoor Use
Permitted statewide
Indoor Potable
Plumbing code applies
Backflow Required
For potable use
Last verified: August 20, 2026Source: North Carolina General Assembly

Summary

North Carolina makes water reuse, including captured rainwater, official state policy, and residential rain barrels used for outdoor irrigation are permitted statewide without a state permit.

No city ordinance may prohibit or have the effect of prohibiting the installation and maintenance of cisterns and rain barrel collection systems used to collect water for irrigation purposes. A city may regulate the installation and maintenance of those cisterns and rain barrel collection systems for the purpose of protecting the public health and safety and for the purpose of preventing them from becoming a public nuisance.

Source: North Carolina General AssemblyView official code

Full Breakdown

N.C. Gen. Stat. 143-355.5 declares water reuse, including the use of gray water and captured rainwater, critical to meeting the state's water supply needs and directs state agencies to promote and facilitate it. Residential rainwater capture for outdoor irrigation is permitted statewide without a state permit. Use of harvested rainwater for indoor potable purposes is regulated under the state plumbing code and requires backflow prevention. No North Carolina city prohibits residential rain barrels, and local rules focus on practical safety matters like cistern installation and plumbing connections.

Violations & Penalties

Improperly cross-connected systems can result in plumbing code violations and fines through local building inspectors.

Frequently Asked Questions

Do I need a permit to install a rain barrel in North Carolina?
No state permit is required for residential rain barrels used for outdoor irrigation. Larger cisterns or indoor uses must comply with the state plumbing code.
Can my city ban rainwater harvesting?
No North Carolina city bans residential rainwater collection, and state policy under G.S. 143-355.5 actively promotes it. Local rules are limited to practical safety matters like cistern installation and plumbing connections.

Sources

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