Illinois HOA Water Conservation

Section 1: Overview

Illinois has no statute limiting an HOA's power over water-efficient landscaping, water-conserving irrigation, artificial turf, or xeriscape design.² The nearest statutory limit is the Homeowners' Native Landscaping Act, which bars associations from prohibiting Illinois native species on an owner's lawn but is framed around biodiversity rather than water conservation.¹ For most water-related landscaping questions, the governing layers are the recorded declaration and the association's architectural-control process, with the Condominium Property Act, 765 ILCS 605, supplying the framework for condominiums and the Common Interest Community Association Act, 765 ILCS 160, for other planned communities.^2,3 Associations organized as nonprofits also observe General Not For Profit Corporation Act formalities. Any practical outdoor-watering rule is far more likely to come from a local water utility than from state law.⁷ Illinois water-resource law — the riparian doctrine and the Lake Michigan diversion allocation the Department of Natural Resources administers — governs who may withdraw water and how much. It doesn't bear on whether an association may regulate lawns or plantings.⁶ Within the national picture, Illinois sits with the silent, CC&R-governed states, unlike drought-exposed jurisdictions such as California, Arizona, Nevada, Colorado, Texas, and Florida that have enacted statutes limiting HOA control over water-efficient landscaping. What follows sets out the framework, what it requires of associations, and recent activity.

Section 2: The statutory and regulatory framework

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

Review the Illinois Compiled Statutes, and no provision restricts an association's authority over drought-tolerant or xeriscape landscaping, water-efficient irrigation, or artificial turf as water-saving measures.^2,3 Neither the Condominium Property Act, 765 ILCS 605, nor the Common Interest Community Association Act, 765 ILCS 160 — the two general statutes that would house such a provision — addresses water conservation.^2,3 The single Illinois statute that limits association control over plantings is the Homeowners' Native Landscaping Act, 765 ILCS 167/, effective July 19, 2024, which says an association shall not prohibit an owner from planting or growing Illinois native species on the owner's lawn, so long as the area is kept predominantly free of weeds, invasive species, and trash and doesn't extend onto neighboring or common property.¹ That statute defines "Illinois native species" as "trees, shrubs, vines, ferns, flowers, forbs, sedges, grasses, and other plants growing in the State of Illinois before European settlement or as otherwise defined by rule by the Department of Natural Resources," excluding weeds regulated under the Illinois Noxious Weed Law or the Illinois Exotic Weed Act. It protects native species rather than water efficiency, though many Illinois natives happen to be low-water plants.¹ This differs from the model used in drought-exposed states. Colorado, for example, bars associations from prohibiting xeriscape and drought-tolerant landscaping under Colo. Rev. Stat. section 38-33.3-106.5, California prohibits association rules that ban low-water plants or penalize reduced irrigation during a declared drought under Cal. Civ. Code section 4735, and Texas limits association restrictions on drought-resistant landscaping and water-conserving turf under Tex. Prop. Code section 202.007. Illinois has adopted no equivalent water-conservation provision, and its native-plant statute shouldn't be read as one.¹

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

Illinois water-resource law is background context, and it doesn't govern association landscaping authority. Surface water follows the riparian reasonable-use doctrine, groundwater falls under a reasonable-use rule under the Water Use Act of 1983, and Illinois' withdrawal from Lake Michigan is capped by a federal decree and allocated by the Department of Natural Resources, Office of Water Resources, under the Level of Lake Michigan Act, 615 ILCS 50.^6,9 These rules determine who may withdraw water and how much — not whether an owner may replace turf with gravel or native plantings. No Illinois state drought-declaration mechanism suspends or limits association enforcement against brown, dormant, or unwatered lawns; that kind of provision, found in some Western states, has no Illinois counterpart.² On rainwater, Illinois permits harvesting for non-potable use under state law and the Illinois Plumbing Code, and the Homeowners' Energy Policy Statement Act, 765 ILCS 165/, requires an association to adopt a policy statement saying whether a rainwater collection system is allowed and, if so, its location and design requirements.^5,4 That Act doesn't prohibit an association from disallowing rainwater collection — unlike its treatment of solar systems, which associations may not prohibit.⁴ Illinois has no statute governing graywater reuse as against associations.³

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

For an Illinois community, water-related landscaping rules are set by the recorded declaration and the association's architectural-control provisions. The Condominium Property Act supplies the general use-restriction and board-powers framework for condominiums, and non-condominium planned communities fall under the Common Interest Community Association Act — both statutes silent on water conservation.^2,3 The practical source of any owner-facing water-use rule is the local water utility or municipality. The City of Chicago Department of Water Management provides that "Sprinkling is permitted from 5 am until 8 am, and 7 pm until 10 pm, Mondays through Fridays," with "no restrictions on weekends and holidays."⁷ Many suburban municipalities that receive Lake Michigan water impose seasonal odd/even outdoor-watering ordinances, and Illinois American Water issues voluntary wise-water-use guidance rather than a mandatory schedule.⁸ These utility and municipal rules operate independently of the association framework. The operational takeaway: a manager searching for "Illinois HOA water conservation law" will find the applicable rulebook in the declaration and the local water utility's or municipality's requirements, plus the native-plant carveout — not in any HOA-specific water statute.²

Section 3: What the framework requires of HOAs

A. Landscaping approval and architectural review

Most declarations require architectural-committee approval before an owner installs or changes landscaping.¹² An association may not prohibit Illinois native species on an owner's lawn but may adopt reasonable rules for "a planned, intentional, and maintained native landscape that do not impair the native landscape's proper maintenance and care or impose height restrictions," under 765 ILCS 167/10.¹ For solar and related systems, an association must process an application within 75 days and must, in that same policy statement, address whether rainwater collection and composting systems are allowed, under 765 ILCS 165/ — a requirement the declaration may not waive.⁴

B. Drought response and watering restrictions

No state statute requires an association to permit reduced watering, dormant lawns, or turf removal during drought — 765 ILCS 605 and 765 ILCS 160 both stay silent.^2,3 Outdoor-watering limits come from the local utility or municipality instead, such as Chicago's sprinkling-hour rule and suburban odd/even watering ordinances.^7,8

C. Rule adoption and disclosure

Condominium boards derive rulemaking and enforcement power from Section 18.4 of the Condominium Property Act and the declaration; the Act sets a floor the declaration cannot contradict.² Common interest communities take equivalent authority from the Common Interest Community Association Act and their community instruments.³ Illinois has no dedicated HOA regulator; the Department of Financial and Professional Regulation licenses community association managers but doesn't oversee association operations generally.¹³ A native-landscaping owner must still maintain the area free of weeds, invasive species, and trash, under 765 ILCS 167/10.¹

D. Enforcement limits and conflicts

Illinois courts enforce declarations according to their plain terms and require that architectural review be applied consistently and not arbitrarily.^12,14 Where a declaration requires a green, watered lawn while a local utility restricts outdoor watering, that tension is between a private contract and a local rule, resolved under general law rather than under any water-conservation statute, because Illinois has none on point.^7,2

Section 4: Recent legislative and judicial activity

The Supreme Court of Illinois exercises discretionary review over decisions of the Illinois Appellate Court, which sits in five districts. Trial-level association disputes begin in the Illinois Circuit Courts.

A. Recent bills

No bill enacted or pending in the past 24 months creates or alters HOA authority over water-efficient landscaping, drought enforcement, or graywater. The only closely related measure, the Homeowners' Native Landscaping Act, was signed as Public Act 103-704 and took effect July 19, 2024, just outside a strict 24-month window from this update but retained here for continuity.

A separate 2025-2026 measure, HB1359, the Protecting Illinois Native Landscapes Act, 104th General Assembly, binds only units of local government, not associations, and stalled after re-referral to the Rules Committee on March 21, 2025.¹¹

B. Recent appellate rulings

No Illinois appellate ruling in the past 36 months turns on water conservation. Two decisions bear on the architectural-review framework that governs landscaping changes.

C. Active legislative debates

No active Illinois legislative debate targets HOA water-conservation authority as of this update.

Section 5: National positioning and related coverage

For water-conservation-specific purposes, states fall into three groups. The first has statutes limiting HOA authority over water-efficient landscaping, concentrated in drought-exposed jurisdictions including California, Arizona, Nevada, Colorado, Texas, Florida, and Utah. The second has partial or emerging provisions, such as native-plant or pollinator protections that touch landscaping without addressing water efficiency directly — Illinois belongs here, by virtue of its Homeowners' Native Landscaping Act. The third is fully silent, CC&R-governed states, which include most Great Lakes and Midwestern states. A firm accustomed to Colorado or California xeriscape-protection rules shouldn't assume any equivalent applies in Illinois, where water-efficient landscaping remains a matter of the declaration and the local utility. Illinois shows no legislative momentum toward a water-conservation HOA statute, and its recent native-landscaping bill reaches only local governments, not associations.

HOA Weekly's Illinois water-conservation coverage updates quarterly as the legislature and the courts act. For Illinois communities, the practically controlling water rules are the recorded declaration and the local water utility. Federal frameworks apply to Illinois 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. Homeowners' Native Landscaping Act, 765 ILCS 167/ (P.A. 103-704, eff. 7-19-24) ↩
2. Condominium Property Act, 765 ILCS 605 (full act, Illinois Department of Financial and Professional Regulation) ↩
3. Common Interest Community Association Act, 765 ILCS 160 (Illinois General Assembly) ↩
4. Homeowners' Energy Policy Statement Act, 765 ILCS 165/ (Illinois General Assembly) ↩
5. U.S. EPA, Summary of Illinois' Water Reuse Guideline (rainwater harvesting; Illinois Plumbing Code) ↩
6. Illinois DNR, Lake Michigan Water Allocation; Level of Lake Michigan Act, 615 ILCS 50 ↩
7. City of Chicago Department of Water Management, Water Conservation (sprinkling hours 5-8 a.m. and 7-10 p.m., Monday through Friday) ↩
8. Illinois American Water, voluntary wise-water-use guidance (June 16, 2026) ↩
9. Illinois DNR, Water Resource Law in Illinois (riparian doctrine; Water Use Act of 1983) ↩
10. HB 5296, 103rd General Assembly, Public Act 103-704 (Illinois General Assembly) ↩
11. HB 1359, Protecting Illinois Native Landscapes Act, 104th General Assembly (Illinois General Assembly) ↩
12. Patel v. Prairie Lakes Homeowners Association of Illinois, Inc., 2023 IL App (2d) 230158-U ↩
13. Illinois Department of Financial and Professional Regulation (licenses community association managers; no dedicated HOA regulator) ↩
14. Kubik v. Darien Club Owners Association, 2025 IL App (3d) 240546-U (Illinois Appellate Court, Third District; leave to appeal denied Nov. 26, 2025) ↩