For villages usually the underground drilling together with a complex water supply infrastructure (water supply station) is created.
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Water from the drilling
The most expensive water extraction method. Correctly using the drilling is also very durable. Depth of the drilling may vary from 10 m up to several hundreds meters. In many places in the territory of Latvia it is the only possible water extraction method. Drilling can be conducted throughout the territory of Latvia, but depths may vary widely. Typically, there are several potential water intake horizons with different water quality and quantity. Water from the drilling has lesser risks of the bacteriological pollution. However, the drillings often contain such impurities as iron (mostly), lime, sulfate. As well as hydrogen sulphide odor that rises from the dolomite layers. To bore the drilling only verified firms and masters must be chosen who are capable and interested in taking responsibility for the quality of the hole!