Governing Concept
Water resources are treated as property of public dominion because water is a natural resource held by the State for public use, public service, and the development of national wealth. The constitutional rule on State ownership of natural resources supplies the broad premise; the Civil Code and the Water Code supply the property classification and the rules on use.
Public dominion does not mean that each person owns a fractional share of the water. It means that the resource is outside private commerce while it retains that character, and private persons may acquire only such use, control, or enjoyment as the law or a lawful governmental grant permits.
The Water Code is decisive in modern classification. It declares that waters belong to the State, including rivers, natural lakes, lagoons, surface waters, atmospheric water, ground water, and seawater. It also treats waters found on private lands as State-owned, subject only to limited statutory uses by the landowner and to State regulation.
Water Resources Within Property Classification
In the classification of property according to ownership, water resources are placed principally under property of public dominion. The classification covers not only visible flowing water but also the natural physical features legally attached to public waters, such as natural beds of rivers, brooks, lakes, and lagoons when the governing law so provides.
The Civil Code separately identifies several waters and water-related areas as public dominion, while the Water Code broadened the governing principle by making State ownership the rule for all waters. Civil Code language on private waters must therefore be read subject to the later and special Water Code, particularly where the two cannot be reconciled.
| Subject | Legal Treatment | Effect |
|---|---|---|
| Rivers and their natural beds | Property of public dominion and State-owned water resource | Private title cannot validly convert them into private property. |
| Springs, brooks, surface flow, lakes, and lagoons | Generally governed by State ownership under the Water Code | Use depends on law, permit, or allowed ordinary use. |
| Ground water and subterranean water | State-owned, even when found beneath private land | Land ownership does not include ownership of the water resource. |
| Rainwater, atmospheric water, and runoff | Included among State water resources under the Water Code | Capture or use is subject to statutory limits and regulation. |
| Seawater | State-owned natural resource | Its use is regulated according to public welfare, navigation, fisheries, environment, and other lawful interests. |
Consequences of Public Dominion
As property of public dominion, water resources are generally inalienable, imprescriptible, and outside the ordinary commerce of man. They cannot be sold, donated, mortgaged, levied upon, or acquired by private persons through occupation, possession, or acquisitive prescription.
A Torrens title over adjoining or surrounding land does not by itself carry ownership of public waters, riverbeds, natural beds, foreshore, submerged areas, or other public-dominion portions. Registration confirms registrable private ownership; it does not legalize private ownership over property that the law reserves to the State.
Possession of water or long use of a water source may be relevant to a claim of lawful use, priority, or administrative recognition, but it does not create private ownership of the water resource. Any Civil Code reference to acquisition of the use of public waters by prescription must be read subject to the Water Code rule that State waters are not acquired by prescription.
Public dominion also limits remedies. A private claimant cannot recover public waters as owner, partition them, or demand recognition of exclusive ownership against the State. The legally protectible interest is usually a water right, permit, easement, contractual right, riparian incident, nuisance claim, damage claim, or protection against unlawful interference, depending on the facts.
State Ownership and Private Land
Water found within private land remains distinct from the land itself. The land may be privately owned, but the water resource is subject to State ownership and regulation. This distinction prevents private enclosure of water sources needed for domestic supply, irrigation, ecology, navigation, fisheries, power, industry, and other public needs.
The private landowner is not without legal benefit. The Water Code allows limited use of waters found on private land for domestic purposes without a water permit, subject to registration when required and to regulation against wastage or during emergencies. This benefit is an incident of possession and lawful use of the land, not ownership of the water as a natural resource.
When water is lawfully appropriated, the appropriator may exercise control over the water from the time it reaches the canal, aqueduct, works, or storage system leading to the place of authorized use, for so long as it is beneficially used according to the lawful purpose. This control is narrower than ownership of the source and remains dependent on the conditions imposed by law.
Use Distinguished from Ownership
The central distinction is between ownership of the water resource and the right to use water. Ownership remains in the State; private use arises from law, permit, concession, recognized ordinary use, or other lawful authorization.
A water right is a privilege granted by the government to appropriate and use water. It does not transfer title to the river, aquifer, lake, spring, or other source. Its scope is measured by the authorized source, place, quantity, purpose, period, works, and conditions of use.
Ordinary public uses may be made without converting public waters into private property. These include limited acts such as taking water by hand-carried receptacles, bathing or washing where lawful, watering domestic or farm animals, navigation, or flotation when permitted by the nature of the water body and by applicable regulation. These uses are tolerated because they do not amount to exclusive appropriation of the resource.
Appropriative or exclusive uses generally require governmental authorization. Irrigation, municipal supply, industrial use, power generation, fisheries, commercial extraction, large-scale impounding, and similar activities affect allocation and may prejudice other users, so they fall within the State's regulatory control.
Regulation, Priority, and Beneficial Use
Water resources are finite, mobile, and shared; their legal treatment therefore emphasizes regulation rather than absolute private dominion. The State may determine priorities, impose conditions, prevent waste, protect watersheds, regulate extraction, require permits, and adjust use in light of public health, safety, agriculture, energy, ecological, and community needs.
Beneficial use is the measure and limit of a lawful water right. A grant to use water is not a license to waste it, hoard it, pollute it, or apply it to an unauthorized purpose. Nonuse, misuse, violation of permit conditions, interference with superior rights, or public necessity may justify administrative restriction, suspension, cancellation, or reallocation under governing law.
Because water systems are interconnected, lawful use by one person is always subject to the rights of others and to the superior requirements of public welfare. A permit or concession is ordinarily understood without prejudice to existing rights and without surrender of the State's continuing authority over conservation and allocation.
Relation to Land Titles and Deeds
In land registration, the presence of a river, stream, lake, spring, shore, marsh, or groundwater source must be analyzed separately from the surrounding land. The title may cover the private land, but not the public water resource or public-dominion bed that the law excludes from private ownership.
Descriptions in deeds, surveys, or certificates of title are not conclusive against the legal character of public waters. If a technical description appears to include a riverbed, navigable water, natural lake bed, foreshore, or similar public-dominion area, the inclusion does not defeat State ownership over the excluded portion.
Private improvements connected with water, such as pumps, pipes, canals, reservoirs, fishpond works, or irrigation facilities, may be separately owned when lawfully built. Ownership of the works, however, does not confer ownership of the water source and does not authorize use beyond the law or the relevant permit.
Operative Distinctions
| Distinction | Rule |
|---|---|
| Water resource versus water use | The resource belongs to the State; use may be granted, tolerated, regulated, limited, or withdrawn according to law. |
| Private land versus water on the land | Private ownership of the soil does not carry private ownership of State-owned water found there. |
| Permit versus title | A permit creates a regulated privilege to appropriate or use; it is not a conveyance of public dominion property. |
| Possession versus prescription | Long possession may explain use, but State waters and public-dominion property are not acquired by prescription. |
| Infrastructure versus source | Canals, pipes, pumps, and reservoirs may be owned; the river, aquifer, lake, or seawater source remains governed by State ownership. |
Doctrinal Synthesis
Water resources occupy a special place in property law because they are necessary for life, agriculture, industry, ecology, transportation, and national development. The legal system therefore refuses to treat them as ordinary objects of private ownership.
The controlling idea is that water may be used, controlled, diverted, stored, or enjoyed only within the limits allowed by law, while ownership of the resource remains in the State. This preserves public dominion, prevents private monopolization of essential resources, and allows the State to allocate water according to changing public needs.