Water is often the first surprise for foreigners building or buying in Costa Rica. A beautiful lot can come without a water connection. A condo can depend on a private well that the HOA operates. A hotel can draw from a spring that needs a permit nobody ever filed. And in the dry season, the question of where the water comes from becomes urgent.
Ingeniería de las Aguas works on both sides of the water cycle: the wastewater that leaves a property and the drinking water that comes in. On the drinking water side we offer treatment design, water quality analysis and the design of storage and distribution.
Who supplies water in Costa Rica
Before designing anything, it helps to know who runs the water where you are:
- AyA, the Instituto Costarricense de Acueductos y Alcantarillados, is the national water and sewer institute. It runs many urban and some coastal systems.
- ASADAs are community water associations. They operate rural and many coastal water systems under agreements with AyA. In many rural communities, and in some beach towns, the provider is an ASADA.
- Municipal water systems exist in some cantons.
- Private sources, a well or a spring, supply many farms, condos, hotels and remote homes.
If your property will be connected to AyA, an ASADA or a municipal system, that operator issues the water availability letter that most building projects need. If it cannot, you are looking at a private source, with its own permits and timeline. Our guide on buying land: water and wastewater checks explains why this should be confirmed before you sign.
Wells, springs and concessions
In Costa Rica, groundwater and surface water are public property. Owning the land does not give you the right to use the water for anything you like. The rules come from the Water Law (Law 276), its regulation Decree 44410-MINAE, and, for drilled wells, Decree 43053-MINAE on drilling. They are applied by the Water Directorate (Dirección de Agua) of MINAE, the Ministry of Environment and Energy, through its online platform, SIPECO.
The basics:
- A drilling permit is granted for exploration only. The right to use the water comes later, with the concession.
- Drilling must be done by a company listed in the national registry of drillers, with a responsible geologist who signs the reports.
- After drilling comes a final drilling report and a pumping test. For a condo's own supply, that test must last at least 72 hours.
- In a condominium, the well must be inside the condo, in a common area.
- On the coast, if there is a risk of saltwater intrusion, the Water Directorate can require quarterly monitoring and limit pumping.
- A hand-dug well for domestic use is registered; other uses need a concession.
We do not drill wells or process well permits: drilling is done by a registered driller with its responsible geologist. We design what comes after the wellhead and make sure it fits with the wastewater side of your project. The step-by-step process is in our guide on water well and concession permits.
Drinking water quality
The Drinking Water Quality Regulation, Decree 38924-S, applies to every public or private operator of a water supply system. That covers ASADAs and municipal systems, but also condos, residential developments and hotels with their own well or spring, and businesses that supply water for human consumption.
What it asks for, in plain terms:
- Disinfection of all supplied water, with a residual level of free chlorine in the network.
- Treatment of any surface water, such as a creek or river, before it is supplied.
- An operational control by the operator: turbidity, odor and free chlorine, recorded in a logbook.
- Laboratory analyses in levels: a basic level for microbiological and physical parameters, a second level for minerals and metals such as iron, manganese and hardness, and a third level for health-related substances such as arsenic, nitrate and lead.
- A baseline of second- and third-level parameters for each source.
- A health operating permit from the Ministry of Health for the operator.
We arrange and interpret water quality analyses, and we explain the results in clear terms: what complies, what does not, and what to do about it.
Treatment, storage and distribution
When the water needs treatment, or a project needs its own system, we design and build it:
- Treatment to correct what the analysis shows, from disinfection to filtration for iron, manganese or turbidity.
- Storage tanks sized for the dry season and for peak occupancy.
- Distribution and pumping for condos, hotels and developments, including pumping stations.
- Rehabilitation of existing systems that no longer deliver enough water or good water. See our redesign service.
One point we always check: the distance between your water source and any septic system, drain field or treatment plant. Decree 42075-S-MINAE sets setbacks between drain fields and drinking water tanks and pipes, and the Water Law and Forestry Law protect wells and springs. Getting this right at the design stage avoids expensive changes later. For the wastewater side, see our treatment plant and septic system services.
Where we work
We serve Western Alajuela, the Greater Metropolitan Area, Guanacaste, Puntarenas (Central Pacific and Southern Zone) and Limón. See areas we serve.
Ask about your water
Message us on WhatsApp with the property location, where the water comes from today (AyA, ASADA, well or spring), how many people or units it serves and any lab results you have. You can also use our contact page.