Washington HOA Water Conservation

Section 1: Overview — How water conservation interacts with HOA authority in Washington

Washington is one of a minority of states that limits HOA authority over water-efficient landscaping by statute. Contrary to the pattern across most of the Pacific Northwest, the Revised Code of Washington prohibits community associations from banning drought resistant landscaping and bars them from fining owners who cut back watering during a declared drought.¹ The controlling provision for communities formed on or after July 1, 2018 is RCW 64.90.512, part of the Washington Uniform Common Interest Ownership Act, WUCIOA.¹ Parallel provisions govern older communities: RCW 64.38.057 for homeowners associations and RCW 64.34.394 for condominiums, both effective until January 1, 2028, when WUCIOA becomes the sole governing act.^2,3

Within that statutory floor, the recorded declaration and the association's architectural-control process still set the detailed rules, because the statute expressly allows reasonable placement and aesthetic requirements.¹ State water-resource law is a separate matter: Washington allocates water under the prior-appropriation doctrine administered by the Department of Ecology, and that body of law governs who may withdraw water, not what an association may require of a homeowner's yard.¹¹

Nationally, Washington belongs with the drought-statute states — California, Arizona, Nevada, Colorado, Texas, and Florida — rather than with the silent, CC&R-only states.¹³ What follows sets out the statutory text, the related water-resource and public-health rules that don't reach HOA authority, and the operational obligations these provisions place on Washington associations.

Section 2: The statutory and regulatory framework

2A. Statutory limits on HOA authority over water-efficient landscaping

Washington restricts HOA authority over water-efficient landscaping, and the restriction is specific. RCW 64.90.512, enacted as part of WUCIOA, provides that the declaration and governing documents "may not prohibit the installation of drought resistant landscaping, pollinator habitat, including beehives compliant with local regulation, or wildfire ignition resistant landscaping."¹ The statute defines "drought resistant landscaping" as "the use of any noninvasive vegetation adapted to arid or dry conditions, stone, or landscaping rock."¹ Associations keep authority to adopt "reasonable rules regarding the placement and aesthetic appearance" of such landscaping, but only "as long as the rules do not render the use of drought resistant landscaping ... unreasonably costly or otherwise effectively infeasible."¹

Two parallel statutes carry the same rule for older communities: RCW 64.38.057 for homeowners associations and RCW 64.34.394 for condominiums, both marked effective until January 1, 2028, the date WUCIOA absorbs them.^2,3 One structural detail matters: RCW 64.90.512(1)(b) states that the installation protection "does not apply to condominium associations," so under WUCIOA the ban on prohibiting drought resistant landscaping reaches planned communities and HOAs, while condominiums draw their equivalent protection from RCW 64.34.394 until that act is repealed.¹

The protections originated in HB 1165, 2020, ch. 9, and were expanded by SB 5934, 2024, ch. 337, which added pollinator habitat.^14,12 The legislative findings attached to the 2020 act state the purpose plainly: to "remove an obstacle to water use efficiency by prohibiting unreasonable homeowner association, common interest ownership association, and condominium association restrictions that limit private property owners' ability to deploy low-water landscaping techniques."¹⁵ This places Washington alongside states with express HOA-restriction statutes, such as California, Cal. Civ. Code § 4735, and Texas, Tex. Prop. Code § 202.007.¹³ The Washington provisions are narrower than some: they protect the categories the statute names rather than water-efficient landscaping in general, and they preserve reasonable aesthetic control.

2B. Related water law, drought response, rainwater and graywater

Washington's prior-appropriation water-rights system, administered by the Department of Ecology under Title 90 RCW, governs who may withdraw and use surface water and groundwater.¹¹ This is background context. It doesn't bear on whether an HOA may regulate a homeowner's landscaping, and it shouldn't be read as either a source or a limit of HOA authority.

The drought-declaration mechanism does connect to HOA authority, but through the landscaping statute rather than through water-resource law. Under RCW 43.83B.405, Ecology issues drought condition orders.⁶ When a property sits within the geographic area of such an order, RCW 64.90.512(2) provides that an association "may not impose a fine or assessment against an owner ... for reducing or eliminating the watering of vegetation or lawns for the duration of the drought condition order."¹ Ecology declared statewide drought emergencies in 2024 and 2025, and again on April 8, 2026; the 2026 order was, in Ecology's words, "the fourth year in a row that part or all of Washington will be under a drought declaration, and it is the fourth statewide drought emergency since 2015," with every watershed in the state meeting the below-75-percent-of-normal supply threshold.¹⁶ The enforcement protection has therefore been live for Washington communities.

Washington has no statute addressing rainwater harvesting or graywater as against HOAs. Rainwater collection is treated as a water-resource question: Ecology's interpretive policy provides that on-site storage and beneficial use of rooftop-collected rainwater doesn't require a water right permit.⁴ Graywater reuse is regulated as a public-health matter under Chapter 246-274 WAC, administered by the Department of Health and local health jurisdictions, and reclaimed water under Chapter 90.46 RCW.^5,17 None of these provisions addresses HOA authority; they're water-resource and public-health rules that operate independently of the community-association statutes.

2C. Where water-conservation rules actually live in Washington

Above the statutory floor, the recorded declaration and the association's architectural-control process set the operative rules. The statute anticipates this by permitting reasonable placement and aesthetic requirements, so a Washington association can regulate how a xeriscape or gravel installation looks and where it goes, provided the rules don't make water-efficient landscaping effectively infeasible.¹

WUCIOA supplies the general framework. RCW 64.90.505 lets an association adopt and enforce construction, design, and aesthetic standards where the declaration so provides, subject to notice-and-comment procedures.⁷ Whether WUCIOA or a predecessor act governs a given community turns on its creation date, under a phased transition in which portions of WUCIOA apply to all communities on January 1, 2026 and full application arrives January 1, 2028.¹⁸

Local water utilities are the practical source of any owner-facing water-use rule. Seattle Public Utilities, through the Saving Water Partnership, and Tacoma Water issue seasonal watering guidance and offer efficiency rebates.^9,10 Their outdoor rebates are narrow: the Saving Water Partnership offers a sprinkler-timer replacement rebate of up to $100, and Tacoma Water offers a smart-irrigation rebate of 50 percent up to $100, but neither offers a turf-removal or lawn-conversion rebate.^9,10 As of mid-2026 their measures are framed as voluntary conservation rather than mandatory restriction; SPU advises watering roughly one inch per week and notes that lawns may be allowed to go brown and dormant.⁹ A manager searching for "Washington HOA water conservation law" will find the operative rules in three places: the state landscaping statute, the recorded declaration, and the local utility.

Section 3: What the framework requires of HOAs

A. Landscaping approval and architectural review

A Washington association may not prohibit installation of drought resistant landscaping, pollinator habitat, or wildfire ignition resistant landscaping, under RCW 64.90.512, RCW 64.38.057, and RCW 64.34.394. This applies to planned communities and HOAs under WUCIOA — condominiums are excepted from the installation protection under WUCIOA — and, until January 1, 2028, to condominiums under the predecessor act; it's mandatory and cannot be varied by declaration.^1,2,3 An association may adopt reasonable placement and aesthetic rules, but not rules that render water-efficient landscaping unreasonably costly or effectively infeasible, RCW 64.90.512(1).¹ Where the declaration authorizes it, an association may adopt and enforce design and aesthetic standards through a defined review process, RCW 64.90.505, which turns on declaration authorization.⁷

B. Drought response and watering restrictions

During an Ecology drought condition order, an association may not fine an owner for reducing or eliminating watering, under RCW 64.90.512(2) and RCW 43.83B.405 — a mandatory protection.^1,6 Any outdoor-watering measure a homeowner actually faces typically comes from the local water utility, not the HOA statute; as of mid-2026 those measures are voluntary — Seattle Public Utilities, the Saving Water Partnership, and Tacoma Water.^9,10

C. Rule adoption and disclosure

Before adopting or amending a rule, the board must give owners notice and an opportunity to comment, RCW 64.90.505.⁷ Enforcement power runs through the association's general powers and a fine schedule furnished to owners, RCW 64.90.405.¹⁹

D. Enforcement limits and conflicts

Fines require notice and an opportunity to be heard under a previously established, furnished fine schedule, RCW 64.90.405(2)(l).¹⁹ A conflict can arise where a declaration requires a green lawn while the landscaping statute protects the owner's right to install drought resistant landscaping; the statute controls to the extent of the conflict, RCW 64.90.512.¹ Where a utility watering restriction conflicts with a CC&R lawn-maintenance requirement, the tension is resolved as a contract-versus-local-rule question, informed by the statutory drought protection.¹

Section 4: Recent legislative and judicial activity

A. Recent bills

SB 5934, 2024, "Concerning pollinator habitat," Chapter 337, Laws of 2024.

No qualifying bill from the 2025 or 2026 sessions turned up that further changed HOA authority over water-efficient landscaping, drought enforcement, rainwater, or graywater. ESSB 5796, 2024, and ESSB 5129, 2025, restructured WUCIOA applicability generally, accelerating some provisions to January 1, 2026 and setting full application for January 1, 2028, but didn't alter the landscaping-protection provisions.¹⁸

B. Recent appellate rulings

No published Washington appellate decision turned up from the past 36 months construing RCW 64.90.512, RCW 64.38.057, or RCW 64.34.394. Washington appellate courts have addressed HOA architectural and covenant enforcement generally, including the Supreme Court's requirement in Riss v. Angel that architectural-review committees exercise their authority reasonably and in good faith, but none construes the drought-landscaping statutes.²⁰

Court structure: trial-level disputes proceed through the Washington Superior Courts; appeals go to the Washington Court of Appeals, which sits in three divisions; the Washington Supreme Court grants discretionary review.

C. Active legislative debates

No active proposal to expand or narrow Washington's HOA water-conservation landscaping protections turned up for the 2026 session.

Section 5: National positioning and related coverage

On a water-conservation-specific axis, states fall into three groups. The first has statutes limiting HOA authority over water-efficient landscaping, concentrated in drought-exposed jurisdictions such as California, Arizona, Nevada, Colorado, Texas, Florida, and Utah. The second has partial or emerging provisions. The third is silent and CC&R-governed, a group that includes much of the Pacific Northwest.¹³ Washington sits in the first group, which distinguishes it from its regional neighbors. For a multi-state operator, the practical point is that Washington's protection is real but narrower than California's or Nevada's broad drought-landscaping rules: it protects defined categories — drought resistant, pollinator habitat, wildfire ignition resistant — and expressly preserves reasonable aesthetic rules. Washington has shown legislative momentum, expanding the protections as recently as 2024 to add pollinator habitat.¹²

HOA Weekly's Washington water-conservation coverage updates quarterly as the legislature and the courts act. For Washington communities, the practically controlling rules are the statutory landscaping floor, the recorded declaration, and the local water utility. Federal frameworks apply to Washington associations regardless of state law — the Fair Housing Act, the Americans with Disabilities Act, and the Fair Debt Collection Practices Act among them.

Footnotes

1. RCW 64.90.512, Installation of drought resistant landscaping, pollinator habitat, or wildfire ignition resistant landscaping (Washington State Legislature) ↩
2. RCW 64.38.057, Governing documents—Drought resistant landscaping, pollinator habitat, wildfire ignition resistant landscaping (effective until Jan. 1, 2028) ↩
3. RCW 64.34.394, Installation of drought resistant landscaping or wildfire ignition resistant landscaping (Condominium Act) ↩
4. Interpretive Statement, Water Resources Policy Regarding Collection of Rainwater for Beneficial Uses (POL 1017), Washington State Register ↩
5. Chapter 246-274 WAC, Greywater Reuse for Subsurface Irrigation (Washington Administrative Code) ↩
6. RCW 43.83B.405, Drought condition orders (Washington State Legislature) ↩
7. RCW 64.90.505, Rules—Notice (Washington State Legislature) ↩
8. Drought Response, Washington State Department of Ecology ↩
9. Rebates and Services (sprinkler timer rebate up to $100; seasonal watering guidance), Saving Water Partnership / Seattle Public Utilities ↩
10. Smart Irrigation Rebate (50 percent, up to $100), Tacoma Water / Tacoma Public Utilities ↩
11. Title 90 RCW, Water Rights and Water Resources (Washington State Legislature) ↩
12. SB 5934 (2023-24), "Concerning pollinator habitat," Chapter 337, Laws of 2024, effective June 6, 2024 (Washington State Legislature) ↩
13. National Caucus of Environmental Legislators, survey of state HOA landscaping and pollinator statutes (cross-verifies comparison states) ↩
14. HB 1165 (2019-20), "Encouraging low-water landscaping practices as a drought alleviation tool," Chapter 9, Laws of 2020 (Washington State Legislature) ↩
15. Findings—Intent—2020 c 9, note following RCW 64.38.057 (Washington State Legislature) ↩
16. "April 8 - Statewide drought declared due to dismal snowpack," Washington State Department of Ecology news release (April 8, 2026) ↩
17. Water Reclamation and Reuse (Chapter 90.46 RCW, Reclaimed Water Act), Washington State Department of Health ↩
18. Chapter 64.90 RCW, Washington Uniform Common Interest Ownership Act, including applicability provisions (RCW 64.90.080, 64.90.365) ↩
19. RCW 64.90.405, Powers and duties (Washington State Legislature) ↩
20. Discussion of Riss v. Angel, Supreme Court of Washington (architectural-review reasonableness standard), Washington Law Review ↩