Water access for livestock: what to check before buying

Livestock need water continuously throughout the year, and unlike pasture, which can be supplemented with outside feed in times of scarcity, water is much harder to replace if a property's usual supply fails. That is why, when assessing a property for livestock use, checking the real availability of water should be one of the first steps, not something reviewed at the end of the decision process.

How much water livestock need varies according to the species, the size of the animals, their production stage at the time and the prevailing weather conditions, among other factors. This guide does not offer indicative consumption figures because they depend on too many variables specific to each project; a vet or a specialised technician can advise on the actual needs of a given operation.

Water consumption also increases noticeably in the hottest months, precisely when some sources tend to reduce their flow, which makes summer the most demanding period for supply in most areas of Spain. Assessing how a property behaves in that specific period, more than at any other time of year, tends to be the most useful criterion for anticipating future supply problems.

This guide focuses on what to check about water from a practical standpoint: what sources are common, how to assess whether they are sufficient, and which legal aspects are worth keeping in mind. The legal aspects of water rights, covered with more technical and regulatory depth, are addressed in the corresponding guides in this platform's legislation section; here they are explained only as a general concept applied to the case of a livestock property.

It is worth approaching this check methodically rather than leaving it until the end of the buying process, precisely because once the deal is signed, the options for resolving a water supply problem tend to be more limited and more costly than catching it in time. Spending the necessary time on this check before committing to the purchase tends to be one of the most worthwhile investments of time in the whole process.

Livestock properties are usually supplied by one or several of the following sources: private wells, which draw groundwater through a borehole; ponds or reservoirs, which store rainwater or runoff and tend to depend on each season's rainfall; natural streams or watercourses, whose flow can vary widely over the year; and, in some areas, connection to an agricultural or livestock supply network managed by an irrigation community or a similar body.

Each type of source has its own advantages and drawbacks. A well managed can offer a more constant supply, but its yield depends on the area's water table and can vary from year to year. A pond depends directly on rainfall and can dry up during prolonged periods of drought. A stream can be plentiful in winter and run practically dry in summer. No source is automatically better than another: what matters is whether, combined, they guarantee a sufficient supply throughout the year on the specific property being assessed.

Many livestock properties do not depend on a single source but on a combination of several: for example, a well as the main source and a pond as a complementary reserve for the months of highest consumption, or a stream that is used when it is running, together with a tank that fills during periods of higher flow. This combination of sources tends to offer more security against shortages than relying on a single one, although it also means more elements that need to be kept in good condition over time.

Water quality, in addition to quantity, is another aspect worth keeping in mind, although this guide does not go into specific technical parameters, which call for a dedicated analysis. Poor-quality water may make a source unsuitable for use or require some kind of treatment before it is given to livestock, and if there is any doubt about the quality of a property's water, the sensible approach is to commission a specific analysis before treating the source as adequate, especially if it has not been in continuous use recently.

If a water source on the property has gone unused for some time — for example, an abandoned well or a pond with no recent maintenance — it is worth being especially cautious before assuming it will work without issue once livestock activity resumes. A lack of continuous use may have deteriorated the associated installations or altered the quality of the stored water, and it is worth reviewing this in detail before treating the source as operational.

To assess whether the water available on a property is sufficient, it is worth asking about its behaviour in the driest months of the year, which tend to be the critical moment, rather than going by how the property looks during a visit in a wet period. Asking the seller, neighbours or local technicians about the supply history in drought years usually gives a more realistic picture than a single one-off visit.

It is also worth checking the condition of the installations associated with the water supply — pumps, pipework, troughs — because a sufficient water source can turn out to be of little practical use if the installations that distribute it are deteriorated or insufficient for the number of animals planned. This connects with the general infrastructure review covered in the guide 'Fencing and basic infrastructure on livestock properties' in this same cluster.

If the supply depends on a pump, it is worth asking about its power source and whether there is any alternative in case of a supply cut, especially on properties far from the grid where a breakdown can take longer to fix than in an area with easy access to technical assistance. This kind of detail is not always obvious on a quick visit and is worth asking directly of someone familiar with how the property normally operates.

It is also worth paying attention to how the water points are distributed across the property's surface, not just to their existence: if livestock have to travel long distances to reach water from the more remote grazing areas, this can affect both the animals' welfare and the wear on the ground along the routes habitually used to reach those points. A property with several well-distributed water points tends to be more practical to manage than one that depends on a single central point, even if that point has a good flow rate.

The storage capacity available, in tanks or ponds, also affects how resilient a property is to occasional interruptions in supply, whether due to a breakdown, a power cut or a particularly intense drought period. Having some storage margin reduces the operation's vulnerability to this kind of incident, although the right volume for that reserve depends on the size of the project and cannot be set as a general figure in this guide.

The fact that a property physically has a well, a pond or access to a watercourse does not automatically mean its use is guaranteed without further checks. In Spain, water use is subject to a system of rights and, in many cases, to administrative authorisations or concessions, whose exact scope depends on the type of extraction, the volume used, and the regulations of each river basin authority. This guide does not detail that regime because it is a technical and regulatory matter that deserves proper rigour; the guides in this platform's legislation section dedicated to water rights cover this question in more depth.

What is worth bearing in mind for the practical purposes of a purchase is that, before assuming a property's water can be freely used for livestock, it is reasonable to request the available documentation on that source (whether there is any registration, concession or authorisation associated with it) and, if in doubt, confirm it with a professional or with the relevant river basin authority before buying, rather than finding out afterwards.

This check is especially relevant when the seller mentions a well or a borehole as a standout selling point of the property: a good physical flow rate does not compensate for an unclear administrative situation, which can end up limiting its use or generating additional paperwork after the purchase. Requesting all available documentation on the property's water sources in writing, before signing, is a reasonable precaution that should not raise any objection from a seller whose situation is in order.

When a property changes ownership, some rights or authorisations associated with a water source may require some kind of update or notification to the relevant authority, rather than transferring automatically along with the property. This guide does not detail that procedure because it varies depending on the type of right and the relevant river basin authority; it is worth confirming it with the competent basin authority or with a professional when formalising the purchase.

It can also happen that a property has a water source with no prior regularisation of any kind, for example an old well built before the corresponding authorisation requirement existed. This situation should be treated with caution, confirming with the relevant basin authority what procedure applies to regularise it, rather than simply assuming that an old source is automatically exempt from any formalities because of its age.

Overall, before buying a property for its suitability for livestock, it is worth checking: what water sources it has and what condition they are in; how those sources behave in the months of least rainfall; the condition of the installations that distribute the water to the points where livestock use it; and the available documentation on the usage rights associated with each source, confirming any doubts with a professional or with the relevant authority.

None of these steps replaces an on-site technical visit when the buying decision is significant. This guide offers a general framework of what to ask and what to check, but the final assessment of a specific property should be made with the support of a specialised technician, especially when there are doubts about the sufficiency of the water or about the rights associated with its use.

When a property's water availability turns out to be doubtful or insufficient, it is worth realistically assessing what alternatives exist to improve it — a new borehole, a connection to a network if one is available in the area, or an expansion of storage capacity — and what cost and administrative implications each of these would involve, though this guide cannot anticipate that cost because it depends entirely on the specific case. Having this information before deciding what price you are willing to pay for the property helps you negotiate with sound judgement.

In short, water should be treated as one of the most important decision criteria when buying a livestock property, on the same level as pasture area or the condition of the infrastructure, rather than as a secondary detail assumed to be resolved without checking. The guides 'Buying a property for livestock use: overview' and 'Fencing and basic infrastructure on livestock properties' in this same cluster cover the rest of the practical aspects worth reviewing before buying.