Appurtenant Water Rights: Arizona Land, Severance, and Liens

In Arizona, water rights are generally appurtenant to the land, meaning they pass with the property when title changes hands — but which rights actually attach, how you can use them, and whether they can be severed, forfeited, or wiped out by a senior lien depends on the type of water, where the land sits, and the history of use. Appurtenant water rights in Arizona are not a single thing. They are a bundle governed by two separate legal systems (surface water and groundwater), overlaid with federal reserved rights, state-land liens, and development rules that can quietly determine what a parcel is worth.

If you own or are buying Arizona land, the practical question is this: what water actually comes with the deed, and what can take it away?

What Appurtenance Means for Arizona Water Rights

Under Arizona law, water rights are appurtenant to the land they serve. They transfer with the property automatically unless something in the record severs them. For land originally acquired from the federal government, the statute is explicit: when title passes from the United States to the state, water rights attach and become appurtenant to that land.¹

The important word is “generally.” Appurtenance is the default, not an absolute. Rights can be severed and transferred with agency approval. They can be forfeited through non-use. They can be subject to prior liens that survive a sale. And in the case of groundwater inside a management area, they may be so narrowly defined that owning the land doesn’t give you the freedom to pump.

Surface Water Rights That Attach to Your Land

All surface water in Arizona — rivers, streams, springs, lakes, and floodwater — belongs to the public. Nobody owns it. What a landowner can hold is the right to divert and use a specific quantity for a beneficial purpose. Beneficial use is described in the statute as the “basis, measure, and limit” of every surface water right, so the right extends only as far as the water is actually put to productive use.²

Arizona follows prior appropriation. First in time, first in right. The priority date attached to a right is one of its most valuable features, because in a shortage senior rights are satisfied before junior rights, and junior users must curtail their diversions.³ Permitted uses include domestic, municipal, irrigation, stock watering, mining, recreation, and wildlife purposes.

Surface water rights can be lost. If the owner stops using the water for five consecutive years, the right ceases and the water reverts to the public for re-appropriation.² This trips up buyers who inherit or acquire land with paper rights they don’t put to work. A few protections exist: storing water underground for future use, exchanging surface water for groundwater or Colorado River water through the Central Arizona Project, and conserving water under a plan filed with the Arizona Department of Water Resources all preserve the right.

Groundwater Rights Inside an Active Management Area

Groundwater is governed by the 1980 Groundwater Management Act, which established Active Management Areas (AMAs) covering the parts of the state where overdraft was most severe. Arizona currently has five: Phoenix, Pinal, Prescott, Tucson, and Santa Cruz. Inside an AMA, the freedom to pump is sharply limited by what happened on the land between 1975 and 1980.⁴

Within an initial AMA, only land that was legally irrigated at some point between January 1, 1975, and January 1, 1980, may be irrigated with groundwater. New agricultural irrigation on previously unirrigated land is prohibited.⁵ Buying farmland inside an AMA does not, by itself, give you the right to irrigate it.

Rights inside an AMA are grandfathered based on that historical use and come in three types:

Irrigation grandfathered rights allow continued irrigation of specific plots that were legally irrigated with groundwater during the 1975–1980 window. They can only be conveyed together with the land they’re attached to.⁶
Type 1 non-irrigation rights are tied to land permanently retired from farming and converted to another use, with annual pumping capped at three acre-feet per acre.
Type 2 non-irrigation rights are based on historical pumping for non-irrigation purposes, limited to the maximum amount pumped in any single year between 1975 and 1980.

Which type attaches to a parcel controls what the water can be used for and, in some cases, how much can be pumped each year. That distinction is one of the first things to identify on land inside an AMA.

Water Supply Requirements for Developing the Land

If your plans involve subdividing land inside an AMA, appurtenant rights alone won’t get you through. Before a plat can be approved, the developer must demonstrate a 100-year assured water supply — enough groundwater, surface water, or treated effluent of adequate quality to serve the subdivision continuously for a century.⁷

There are two ways to satisfy the requirement: obtain a certificate of assured water supply directly from ADWR, or secure a written commitment of water service from a city, town, or private water company that already holds a designation of assured water supply. Without one of those, the plat does not get approved, and residential development is effectively blocked. Confirm the water supply status before closing on raw land intended for development.

Severing Water Rights From the Land

Because appurtenance is the default, moving a water right to a different location or use requires an affirmative step. Severance and transfer of a water right requires approval from the ADWR director and must meet several conditions.⁸

The transfer cannot harm existing water users, the amount diverted after transfer cannot exceed the original vested right, and the right being transferred must have been lawfully perfected and never forfeited or abandoned. If the land is inside an irrigation district, agricultural improvement district, or water users’ association, that governing body must consent before the severance can proceed. The body has 45 days to act; silence is treated as consent.

Irrigation grandfathered rights inside an AMA are stricter. They can only be conveyed together with the land they’re attached to, so you cannot sell the water right separately from the parcel.⁶

Liens That Travel With Water Rights

For land originally acquired from the federal government, anyone furnishing water to that land holds a first lien on the water rights. That lien takes priority over any other lien the landowner creates or attempts to create, and it holds until the last deferred payment under the water contract is fully paid.¹

The water contract must be recorded with the county recorder, which puts the public on notice of the provider’s secured interest. A buyer who skips that check can acquire land subject to a lien they didn’t know existed, with a provider holding a claim that outranks their mortgage.

If the landowner defaults, the lienholder can foreclose using the same process that applies to mortgage foreclosures. After foreclosure, the landowner (called the “settler” in the statute) has one year to redeem the water rights by paying the outstanding deferred payments, interest capped at ten percent per year, and any accumulated maintenance costs.¹ That one-year window is longer than Arizona’s general foreclosure redemption periods, which run from 30 days to six months.

Federal and Tribal Rights That Can Outrank Yours

Even a well-documented appurtenant right sits inside a larger priority system that includes federal reserved water rights. Under the Winters Doctrine, when the federal government set aside land for a specific purpose — a tribal reservation, a national forest, a national park — it implicitly reserved enough water to fulfill that purpose. In Arizona, where tribal lands are extensive, this has significant practical consequences.

Tribal reserved rights carry the priority date of the reservation’s creation, which in most cases makes them senior to nearly all other current users. They cannot be forfeited through non-use. Once quantified, the water can be applied to purposes beyond the original reservation intent, and the rights cover future needs, not just present ones.

Arizona’s general stream adjudications for the Gila River and Little Colorado River systems are the primary legal proceedings sorting out the relative priority of state, tribal, and federal water rights. Thousands of claimants participate; the cases have been ongoing for decades and remain unresolved.⁹ Until they conclude, some uncertainty hangs over the priority and quantity of many rights in both river systems.

Due Diligence Before You Close

Water is often the single most valuable and most misunderstood element of an Arizona property transaction. A parcel’s water situation can swing its value by hundreds of thousands of dollars, or make a planned use impossible. Before closing, work through the questions the property’s water actually raises.

For surface water, identify whether the property holds a perfected appropriative right and what its priority date is. Permits issued since 1919 are filed with ADWR, and existing judicial decrees may quantify the right. If the property draws from the Gila or Little Colorado systems, the pending adjudications may affect certainty until they conclude.⁹ Ask whether the right has been used within the past five years, or whether one of the statutory protections against forfeiture applies.

For groundwater, determine whether the property is inside an AMA and, if so, which type of grandfathered right (if any) attaches to the parcel. Land inside an AMA without a grandfathered irrigation right cannot be irrigated with groundwater, which directly affects agricultural viability. For development, confirm whether the property has an assured water supply certificate or falls within a designated provider’s service area.⁷

Title searches should include a check of recorded water contracts in the county recorder’s office, especially for land originally acquired from the federal government. An undetected first lien under a water contract will survive the sale and outrank a new buyer’s financing.¹ ADWR records, including applications for changes in point of diversion or place of use, round out the picture. A property’s water rights on paper and its water rights in practice can look very different when pending applications or adjudication claims are in play.

1
Arizona Legislature. Arizona Code 37-708 – Water Rights Appurtenant to Lands; Lien; Foreclosure and Redemption
2
Arizona Legislature. Arizona Code 45-141 – Right of Appropriation; Permitted Uses
3
Arizona Legislature. Arizona Code 45-151 – Right of Appropriation; Permitted Uses
4
Arizona Department of Water Resources. Overview of the Arizona Groundwater Management Code
5
Arizona Legislature. Arizona Code 45-452 – Prohibition Against Irrigation of New Lands
6
Arizona Legislature. Arizona Code 45-472 – Conveyance of Irrigation Grandfathered Right
7
Arizona Legislature. Arizona Code 45-576 – Certificates of Assured Water Supply; Designated Cities, Towns and Private Water Companies
8
Arizona Legislature. Arizona Code 45-172 – Transfer of Water Rights; Application; Limitations; Required Consent
9
Superior Court of Arizona. Arizona General Stream Adjudication Bulletin