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Maui County, HI Water Use Rules: Recycled Water Rules (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Mandatory areas
Central, South, and West Maui
Exempt properties
Single-family and duplex
Connection deadline
Within 1 year of service availability
Late payment penalty
10% per annum on unpaid balance
State standard deadline
R-1 quality required by Jan 1, 2039
Enforcing department
Dept. of Environmental Management
Rate appeal body
Board of Variances and Appeals

Summary

Maui County requires improved commercial property in Central, South, and West Maui to connect to reclaimed water service where it is available, for irrigation on golf courses, landscaping, and agricultural uses. Single-family and duplex properties are exempt, and building a new irrigation system without connecting is unlawful.

These county ordinances apply to unincorporated areas of Maui County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

This chapter requires improved commercial property to connect to available reclaimed water service for irrigation purposes, including golf courses, landscaping, and agricultural uses, except for properties used for single-family or duplex purposes. ... Any consumer or other person who desires to use the reclaimed water service of the county shall file a written application with the director. ... An irrigation system to be constructed on commercial property to which there exists available reclaimed water service shall be connected to the available reclaimed water service upon construction of the irrigation system in accordance with the provisions of this chapter and rules relating thereto. It is unlawful for any person to construct on any improved commercial property an irrigation system, to which available reclaimed water service exists, which does not use reclaimed water.

Full Breakdown

020. The chapter applies for mandatory irrigation purposes in the geographic areas defined as Central Maui, South Maui, and West Maui in the county's water reuse feasibility studies, and elsewhere for construction and other purposes wherever the county makes fill stations available. 050. 050. 070), both set in the annual budget, though no connection fee applies for two years after the rate-setting ordinance takes effect. 080). 520 procedures. 020(D).

Violations & Fines

Constructing a new irrigation system on improved commercial property that has available reclaimed water service, without using that reclaimed water, is expressly declared unlawful under § 20.30.050(C). Unpaid reclaimed water bills draw a 10 percent per annum penalty added to the bimonthly bill under § 20.30.090. The department may disconnect a consumer's reclaimed water meter whenever the director determines the consumer's reuse irrigation system endangers public health, safety, or welfare, and a reclaimed water meter is also disconnected automatically if the property's potable meter is removed for nonpayment (§ 20.30.100).

Frequently Asked Questions

Is connecting to reclaimed water mandatory in Maui County?
Yes, for improved commercial property, including golf courses, landscaping, and agricultural uses, in Central Maui, South Maui, and West Maui where a reclaimed water distribution system is available, under Maui County Code § 20.30.020.
Are single-family homes required to use reclaimed water?
No. Section 20.30.020 exempts property used for single-family or duplex purposes from the mandatory connection requirement that applies to improved commercial property.
What if I build a new irrigation system without connecting?
It is unlawful. Section 20.30.050 states that constructing an irrigation system on improved commercial property with available reclaimed water service, without using that reclaimed water, violates the chapter.
Can I dispute my reclaimed water rate?
Yes. Under § 20.30.080(F), a consumer may appeal a director's denial of an avoided-cost rate request to the county's board of variances and appeals using the procedures in chapter 19.520.

Sources & Official References

Other rules in Maui County

All Maui County rules

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