California AB 1572: Nonfunctional Turf Rules and Rebates

California AB 1572 makes it illegal to use potable water to irrigate nonfunctional turf on commercial, industrial, institutional, and homeowners-association common-area properties. The ban phases in between 2026 and 2029 depending on property type, and single-family homes are exempt. The law does not order anyone to tear out grass or install any particular replacement; it simply forbids running drinking water onto ornamental turf that nobody uses.¹

That distinction is worth holding onto. AB 1572 is not a broad building-efficiency mandate. It targets one practice: watering decorative grass with potable water. Low-flow fixtures, irrigation upgrades, and other water-efficiency requirements sit under different California rules.

What Counts as Nonfunctional Turf

The entire law turns on whether grass is functional or nonfunctional, so this is the first question to answer about any given lawn.

Nonfunctional turf is grass that serves no practical purpose for human activity or recreation. Ornamental strips along roadways, expansive lawns wrapping corporate office parks, and unused patches of green in front of commercial buildings are the classic examples. If people aren’t regularly walking, playing, or gathering on it, it’s nonfunctional under the law.¹

Functional turf is explicitly protected. You can continue watering:

Parks and public recreation spaces where people regularly gather or play
Sports fields, including soccer, baseball, and similar athletic facilities
Cemeteries, carved out by name
Golf courses, which the law excludes from the prohibition

You can also keep using potable water on existing trees and perennial non-turf plants that happen to sit in or near a nonfunctional turf area. The practical move is to put those trees on their own irrigation valve so you can keep them alive without also watering the decorative grass around them.²

Gray-area situations, like a strip of grass that gets occasional foot traffic but isn’t a dedicated recreation space, will ultimately be resolved by your local water agency once it adopts its ordinance.

Who Has to Comply and by When

The rollout works outward from the largest water consumers. Two tracks run in parallel: when property owners face the ban, and when public water suppliers must fold AB 1572 into their own rules.

Public water suppliers have until January 1, 2027 to incorporate AB 1572 into their local regulations, ordinances, or policies.² Your local agency’s version of the law is what you’ll actually be held to, and it may add its own detail on enforcement and penalties.

For property owners, the compliance dates land as follows:

January 1, 2028 for commercial, industrial, and institutional properties. Business parks, shopping centers, office complexes, hospitals, universities, and similar non-residential sites all fall in this group.
January 1, 2029 for common areas within homeowners associations and other shared communities.

Some government properties face earlier deadlines. The Desert Water Agency, for instance, sets a June 30, 2026 self-certification deadline for state and local government properties in its service area.³ If you manage government-owned landscape, check with your local water agency for the specific date that applies.

Single-family homes are outside the law entirely. If you own a house with a front lawn, AB 1572 imposes no obligation on you, though many of the water agencies enforcing the law also offer rebates that make voluntary conversion attractive.

How to Comply

Because the law targets the act of irrigating with potable water, compliance can be reached several ways. What you replace the turf with is your choice.²

Cap or remove the irrigation system feeding the nonfunctional turf. This is the cleanest option if you plan to let the area go dormant or convert to hardscape.
Replace the turf with drought-tolerant landscaping. Native plants, mulch, and groundcovers are the approach the state actively encourages.
Switch to non-potable water. The ban applies only to potable water, so recycled water irrigation is still permitted where you have access to it.

What will not satisfy the law is simply switching off the automatic timer. If the irrigation system is still in place and capable of watering the nonfunctional turf, you have not met the standard.²

Certification for Larger Properties

Compliance carries a paperwork obligation for bigger sites. Owners of commercial, industrial, or institutional property with more than 5,000 square feet of irrigated area (cemeteries excluded) must formally certify to the State Water Resources Control Board that the property meets the law. Certification begins June 30, 2030 and repeats every three years through 2039.⁴ The Board may issue a standardized form.

This is worth putting on the compliance calendar now. Missing a certification date can expose an owner to enforcement even when the site itself is otherwise in order.

Hardship Postponements

The State Water Resources Control Board can postpone a compliance deadline by up to three years for an individual property owner who shows good cause. Qualifying reasons include economic hardship, a critical business need, or potential impacts to human health or safety.¹ This is a safety valve rather than a general extension. You have to make an affirmative showing, and the relief applies to your particular situation.

Enforcement and Penalties

AB 1572 puts enforcement in local hands. Your public water system, city, county, or city-and-county government is authorized to enforce the law’s provisions.⁴ In practice, the water agency is the entity most likely to come knocking. Agencies must adopt AB 1572 into a local ordinance, and failure to do so is itself a violation of state law.

Noncompliance carries civil liability and penalties, but the dollar amounts are set locally. Each agency’s ordinance spells out its own penalty structure, so the cost of ignoring the ban depends on where the property sits. Where a local agency is actively enforcing, the state generally will not duplicate the effort; where a local agency fails to enforce, it opens itself to legal challenge.

Turf Removal Rebates

California water agencies offer some of the most generous turf replacement rebates in the country, which softens the cost of getting into compliance. The Metropolitan Water District of Southern California, covering much of the southern part of the state, currently offers a base rebate of $3.00 per square foot for converting up to 50,000 square feet of turf per water meter address per fiscal year, and your local water agency may stack an additional rebate on top.⁵

Amounts vary across the state. Some programs pay as little as $2 per square foot; others have paid up to $7 per square foot in earlier funding rounds. Most programs require pre-approval before work begins and a follow-up inspection, so contact your water agency before starting. Many programs also exclude artificial turf as an eligible replacement.

A Federal Tax Note on Rebates

One boundary worth knowing about the money side. Section 136 of the Internal Revenue Code excludes energy conservation subsidies from gross income when provided by a public utility, but the exclusion is limited to measures that reduce electricity or natural gas consumption. Water conservation subsidies do not qualify.⁶

That means a turf removal rebate from your water agency can be treated as taxable income at the federal level. If you collect a $6,000 rebate for converting 2,000 square feet of commercial turf, the IRS may expect you to report it. Talk to a tax professional before filing, especially on larger rebates, because treatment can depend on whether the payment is structured as a purchase-price reduction or a direct payment.

1
California Legislative Information. California AB 1572 – Potable Water: Nonfunctional Turf
2
City of Santa Cruz, CA. Nonfunctional Turf Regulations (AB 1572)
3
Desert Water Agency. Non-Functional Turf
4
LegiScan. California Assembly Bill 1572
5
SoCal Water$mart. Commercial Turf Replacement Program
6
Office of the Law Revision Counsel. 26 USC 136 – Energy Conservation Subsidies Provided by Public Utilities