Water quality control

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We ensure the quality of your water

Water quality control is our main goal


We have developed an Annual Analytical Control Plan which, together with the health authorities, establishes the frequency and parameters for testing. Full compliance is ensured at all times with both Royal Decree 140/2003, which regulates the health criteria for drinking water quality, and Royal Decree 865/2003, which regulates the hygiene-health criteria for the prevention and control of Legionella.

In Sermubeniel we work to guarantee the health, quality and cleanliness of the town. To do this, we comply with all legally established health and hygiene requirements to protect people’s health.

All tests are performed by an external certified laboratory that guarantees the highest standards of reliability in its results. These results are then sent to the Ministry of Health and entered into the National Drinking Water Information System (SINAC).

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Test parameters

control test

Distribution network control test

To determine the physicochemical, organoleptic and microbiological characteristics of the water

Complete analysis

Complete analysis of the network and tanks

To determine the organoleptic, physicochemical, metal, trihalomethane, pesticide, polycyclic aromatic hydrocarbon and microbiological content

Radioactivity analysis

Radioactivity analysis

In accordance with the latest modification, Royal Decree 140 establishes that potential radioactivity in drinking water must be tested.

Boron and PVC analysis

Boron and PVC analysis

In accordance with the tighter controls for these parameters to ensure water quality, due to the growing importance of desalinated water for the supply of drinking water.

Legionella analysis

Legionella analysis

In accordance with Royal Decree 865/2003, establishing the health and hygiene criteria for the prevention and control of Legionnaires' disease in irrigation systems.

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We also use remotely managed automatic control systems that enable us to continually check and correct water quality indicators: residual chlorine, pH, conductivity and turbidity.

These automatic controls supplement lab controls, in compliance with the Drinking Water Quality Control Plan, which establishes the health criteria for the quality of drinking water.

Drinking water sampling



Quality test

over 1.500

per year

Remote control of indicators



Organoleptic quality

over 1.200

tests per year

Water supply quality reports

Here you can find all the documents on the reports on the quality of the water supply for audits or other procedures.