Drilling a well in the garden: why, how, what authorizations?


Drilling a well in your garden to access underground water is a real asset for saving money and enjoying quality water. Indeed, this free water available at any time is ideal for watering your garden, cooking, washing and washing your clothes or dishes. However, this type of project does not just happen. It is important to take the necessary steps and follow the right steps for creation. Let’s do a check in.

It should be noted that any individual is free to dispose of water from underground sources that pass under his land. However, before starting this project, it is important to ensure that the ground is suitable for such construction. To do this, you can contact the local authorities in your region or consult the geological maps of the Bureau of Geological and Mining Research (BRGM).

Before embarking on the possible construction of a well in your garden, you must contact the town hall of your municipality and make a declaration to the operators of the underground networks. As part of this work declaration, you must provide a detailed plan of your project and its exact location on a cadastral map. This must be submitted to the town hall at least one month before the start of construction and be followed by a second declaration within the month of completion.

If the water from the well is intended for domestic use, you must declare it to the town hall. However, this domestic use is characterized by a groundwater abstraction less than or equal to 1000 m3 per year and for food, hygiene or watering use.

Other formalities may be necessary depending on your project. If the drilling is greater than 10 meters deep, you must declare it to the Regional Directorate for Industry, Research and the Environment (DRIRE). In addition, if you plan to consume water from your well, you must notify the Departmental Directorate of Health and Social Affairs (DDASS) and have analyzes carried out to confirm its potability.

Note that since 2009, all private well owners must install a meter reading the volumes pumped in this way. At the same time, a charge was introduced to compensate for the extraction of this groundwater and its discharge into the wastewater of the public network.

How to dig a well in your garden and at what cost?

Nozzle wells

The nozzle or surface wells make it possible to exploit a small source of water and to have a good reserve. On the other hand, the depth of these forms of wells is limited to around thirty meters while the work is the most substantial. It is therefore not an ideal solution for deep water tables.

While these traditional models are practical for easily collecting shallow water, they cannot be implemented in certain types of soil. Furthermore, the use of a surface pump is preferable and less expensive than a well pump.

The price of drilling a well depends on its depth and the type of soil. Overall, this type of well costs 2,500 to 7,000 euros. Count on average 100 euros per meter dug.

Artesian wells

These types of wells are recommended for deep water tables. They do not require a pump and cost less to set up, as the work is much easier in this case. However, to make this investment profitable, the water source must be substantial and under pressure to promote a natural outlet.

Count 2,500 to 5,000 euros for an artesian well, excluding the cost of drilling. Then add 50 to 100 euros per meter of digging.

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