Missouri HOA Water Conservation

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

Missouri has no statute limiting an HOA's power over water-efficient landscaping. A search of the Missouri Revised Statutes returns no provision protecting drought-tolerant or xeriscape landscaping, native or low-water plantings, artificial turf, or water-efficient irrigation against association restriction.¹ Water-related landscaping rules in Missouri communities are governed instead by the recorded declaration of covenants, conditions, and restrictions and the association's architectural-control provisions; for condominiums, by the Missouri Uniform Condominium Act, Mo. Rev. Stat. § 448.1-101 et seq., or its pre-1983 predecessor; for the corporate formalities of most planned-community associations, by the Missouri Nonprofit Corporation Act, Mo. Rev. Stat. Chapter 355; and, for any owner-facing water-use rule, by the local water utility.^1,8,7

A separate body of law — Missouri's riparian water-rights doctrine and the water-resource oversight of the Department of Natural Resources — governs who may withdraw water and in what quantity. It has no bearing on whether an association may regulate a homeowner's landscaping choices, and the two shouldn't be conflated.⁵

Within the national framework, Missouri sits with the silent, CC&R-governed states rather than the drought-statute states — California, Arizona, Nevada, Colorado, Texas, Florida — that limit HOA authority over water-efficient landscaping. What follows sets out the governing framework, what it requires of associations, and the recent legislative and judicial record.

Section 2: The statutory and regulatory framework

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

There's no Missouri statute restricting an association's authority over drought-tolerant or xeriscape landscaping, native or low-water plantings, artificial turf, or water-efficient irrigation. The two chapters that would house such a provision don't contain one. The Missouri Uniform Condominium Act, Mo. Rev. Stat. § 448.1-101 et seq., which governs condominiums created on or after September 28, 1983, addresses creation, governance, common-element upkeep, and assessments, but says nothing about landscaping type or water conservation.^1,7 Planned-community HOAs have no comprehensive governing statute at all; the one recurring Missouri statute reaching planned-community covenants, Mo. Rev. Stat. § 442.404, is limited to political signs, rooftop solar panels, "for sale" signs, and the keeping of chickens. It doesn't mention landscaping or water.¹⁰

The contrast with drought-exposed states makes the absence concrete. Colorado SB 23-178, 2023, amending C.R.S. § 38-33.3-106.5, bars associations from prohibiting "the use of xeriscape, nonvegetative turf grass, or drought-tolerant vegetative landscapes to provide ground covering to property for which a unit owner is responsible," further amended by HB24-1267. California bars enforcement of covenants that prohibit low-water-using plants or that penalize homeowners for reducing irrigation during a declared drought, Cal. Civ. Code § 4735. Texas restricts associations from prohibiting drought-resistant landscaping and water-conserving turf, Tex. Prop. Code § 202.007. Missouri has adopted no analog to any of these. A property manager searching for a Missouri equivalent won't find one; the governing text is the declaration, not a state water-conservation statute.¹

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

Missouri follows the riparian doctrine for surface water, and the Department of Natural Resources administers water-resource oversight and major water-user registration. This framework governs water allocation and withdrawal. It doesn't authorize or constrain an association's landscaping rules, and it's presented here only as background.⁵

Missouri's drought-response mechanism doesn't reach private landscaping enforcement. When conditions warrant, the Governor issues a drought-alert executive order — for example, Executive Order 25-29, signed September 22, 2025, and extended by Executive Order 25-34 — which activates the DNR Drought Assessment Committee and directs state resources toward agriculture and public water supplies. These orders don't suspend, override, or otherwise reach HOA enforcement against dormant or unwatered lawns.^5,6

On rainwater, Mo. Rev. Stat. § 640.648 provides that all Missouri landowners retain the right to have, use, and own rainwater-collection systems on their own property. That protection runs against government prohibition; it doesn't by its terms address private HOA covenants.³ Missouri has no statute governing graywater reuse as against associations. Graywater is defined and regulated as domestic wastewater under the on-site sewage-disposal provisions, Mo. Rev. Stat. § 701.025 et seq., and implementing health regulations — a public-health framework unrelated to HOA authority.⁴

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

For most Missouri communities, any water-related landscaping rule lives in the recorded declaration and the association's architectural-control provisions, which function as a contract binding all owners.¹ For condominiums, the applicable condominium act supplies the general governance framework: the Missouri Uniform Condominium Act for condominiums created on or after September 28, 1983, and the predecessor Condominium Property Act, Mo. Rev. Stat. § 448.005 et seq., for those created before that date.⁷ For planned communities, there's no comprehensive statute, so the framework is the CC&Rs plus the corporate formalities of the Nonprofit Corporation Act, Mo. Rev. Stat. Chapter 355, under which associations are commonly organized as homeowner and community-improvement associations.⁸

The practical source of any owner-facing water-use rule is the local water utility, not state HOA law. Missouri American Water — "the largest regulated water utility in the state," serving approximately 1.7 million people, about one in four Missourians — operates seasonal outdoor-watering restrictions in its St. Louis service area, an odd/even schedule during the May-through-September season, with citations for violations, and publishes conservation guidance and rebate offerings.² The operational takeaway is direct: a manager looking for "Missouri HOA water conservation law" will find the rulebook in the declaration and the local utility's rules, not in an HOA-specific water statute.

Section 3: What the framework requires of HOAs

A. Landscaping approval and architectural review

An association's power to review and approve landscaping changes comes from its declaration, not from a water statute. For condominiums, the general authority to administer the community and adopt rules sits in the applicable condominium act and may be limited or varied by the declaration — true for both pre- and post-September 28, 1983 condominiums, subject to the declaration.^1,7 For planned communities the review power is purely contractual and corporate, because Missouri has no planned-community statute.⁸

B. Drought response and watering restrictions

Any mandatory watering restriction reaching a homeowner comes from the local water utility, not from the association or a state statute. Missouri American Water's seasonal odd/even schedule is the operative example.² The state drought-alert mechanism operates at the level of agriculture and public water supply and imposes no obligation on associations — background water law, not an HOA mandate.^5,6

C. Rule adoption and disclosure

For planned communities, rule-adoption and member-notice procedures derive from the declaration and from the Nonprofit Corporation Act's corporate-governance requirements, including records and meeting provisions.⁸ For condominiums, the condominium act supplies baseline governance rules that the declaration may supplement, for both pre- and post-1983 condominiums, subject to the declaration.⁷ No disclosure obligation specific to water conservation exists.

D. Enforcement limits and conflicts

A genuine tension can arise where a CC&R requires a green, irrigated lawn while a local utility imposes a watering restriction. In Missouri this is a contract-versus-local-rule question resolved under general law, not under a water-conservation statute, because no statute addresses it.^1,2 The single statutory limit on planned-community covenants relevant to exterior features, Mo. Rev. Stat. § 442.404, addresses solar panels, signs, and chickens, not landscaping or water, and so doesn't bear on a dormant-lawn dispute.¹⁰

Section 4: Recent legislative and judicial activity

A. Recent bills

No qualifying bill turned up. No Missouri bill in the 2025 or 2026 regular sessions created or affected HOA authority over water-efficient landscaping, drought enforcement, rainwater, or graywater. The one 2026 measure amending the HOA-covenant statute, HB 2435, is limited to stylistic changes.

B. Recent appellate rulings

No qualifying ruling on HOA landscaping or water-related use restrictions turned up in the past 36 months. The one recent Supreme Court of Missouri decision bearing on how statutory limits interact with HOA covenants concerns solar panels, not water or landscaping, and is noted here only for its analytical relevance to covenant enforceability.

C. Active legislative debates

No active Missouri legislative debate on HOA landscaping or water conservation turned up. Trial disputes proceed through the Missouri Circuit Courts, appeals to the Missouri Court of Appeals — Eastern, Western, or Southern District — and final review to the Supreme Court of Missouri; Missouri has no dedicated HOA regulatory agency.

Section 5: National positioning and related coverage

On water conservation specifically, states cluster into three groups. The first, concentrated in drought-exposed jurisdictions — California, Arizona, Nevada, Colorado, Texas, Florida, Utah, and others — have statutes limiting HOA authority over water-efficient landscaping. The second have partial or emerging provisions, often bills introduced but not enacted. The third, the silent, CC&R-governed states, include most Midwestern and border-South states, and Missouri. The practical implication for a multi-state operator is direct: a firm accustomed to Colorado's or Texas's xeriscape-protection rules shouldn't assume any equivalent applies in Missouri, where the declaration and the local utility control. Missouri shows no legislative momentum toward such a statute; no qualifying bill was introduced in the 2025 or 2026 sessions.⁹

HOA Weekly's Missouri water-conservation coverage updates quarterly as the legislature and the courts act. For Missouri communities, the practically controlling water rules are the declaration and the local water utility. Federal frameworks apply to Missouri 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. Mo. Rev. Stat. § 448.1-101 (Missouri Uniform Condominium Act, short title); chapter contains no landscaping or water-conservation provision ↩
2. Missouri American Water, conservation guidance and outdoor-watering practices (Jan. 7, 2026); service-area figures per Missouri American Water/PR Newswire ↩
3. Mo. Rev. Stat. § 640.648 (right to rainwater-collection systems retained) ↩
4. Mo. Rev. Stat. § 701.025 (on-site sewage-disposal definitions, including graywater) ↩
5. Missouri Department of Natural Resources, Drought program and Drought Assessment Committee ↩
6. Governor of Missouri, Executive Order 25-29 (drought alert, Sept. 22, 2025) ↩
7. Mo. Rev. Stat. § 448.010 (predecessor Condominium Property Act definitions, §§ 448.005 to 448.210) ↩
8. Mo. Rev. Stat. § 355.025 (Nonprofit Corporation Act, purposes including homeowner and community-improvement association) ↩
9. Missouri House of Representatives, HB 2435 (2026 Regular Session) ↩
10. Mo. Rev. Stat. § 442.404 (deed restrictions: political signs, solar panels, sale signs, chickens) ↩
11. Eikmeier v. Granite Springs Home Owners Ass'n, No. SC101152 (Mo. banc Jan. 23, 2026), Supreme Court of Missouri opinions ↩