Water Use Rules in Ada County, ID (2026)

1 county-level rule, plus city-specific rules for 1 city in Ada County, Idaho.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Ada County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Recycled Water Rules

Planned community developments in unincorporated Ada County must provide centralized wastewater treatment with reuse service and use reclaimed water for nonresidential irrigation when available, under Ada County Code Section 8-12-4. Residential lots must carry automated sprinkler systems to cut waste. The mandate applies only to Planned Community (PC) zoned projects, not ordinary subdivisions.

Recycled Water Rules for Ada County Planned Communities

Some Restrictions

Ada County Code § 8-12-4(A) (Urban Public Service Level Standards); § 8-12-2 (Applicability)

8-12-2: APPLICABILITY: This Chapter applies to the development of planned communities within unincorporated Ada County. ... 8-12-4: URBAN PUBLIC SERVICE LEVEL STANDARDS: ... A. Minimum Urban Public Service Level Standards: ... 4. All nonresidential lots shall have pressurized irrigation systems, using reclaimed water when available and permissible under all applicable federal, state, and local ...

Full ordinance details →Official source ↗

Water Use Rules by City in Ada County

1 cities in Ada County have their own water use rules rules. Each link goes to that city's dedicated page with code citations.

BoisePop. 235,684

2 verified rules • Recycled Water Rules, Turf Replacement Rebates

All Ada County ordinances

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