Practical matters

Why not pay your water bills monthly (fill in the monthly debit authorization and send it to the Association)?

Look after your meter. Protect it against frost. Report any problems with the signal heads.

Take care not to damage the signal head on your meter.

Save water, but don’t forget to declare your individual boreholes.

Don’t forget to renovate your interior installations (quality problems may occur if they are in poor condition).

If you use an individual borehole, you are prohibited from connecting it to installations supplied by SIEAM; you run the risk of polluting the public distribution network.

If you have any technical problems, please call SIEAM (05 58 41 43 15). A duty officer will respond quickly. However, before you call, make sure that your problem concerns the public part of the supply system and therefore SIEAM.

Please call during office hours for matters concerning administrative formalities (customer supply contract, meter installation, billing problems).

Please contact SIEAM a week before the start of works on non-collective sanitation works so that we can monitor the whole project. If you do not do so, we will be unable to issue a compliance report concerning checks on the installation and the proper execution of the works.

Do not discharge rainwater or groundwater drainage water into the wastewater networks. The SIEAM network is based on a dual sewer system. Inspections will be carried out.

For restaurants, canteens, caterers: do not dispose of your frying oils or fats in the wastewater network. Every establishment should be equipped with a fat separator and should send oils and fats to an establishment responsible for collecting them (e.g. SITCOM can provide you with 200 l separators).

Do not dispose of paints, solvents or toxic products into the sewage networks (suspicious substances have been observed arriving at the Marensin treatment plant. Paint has been discharged into the rainwater network on several occasions, causing pollution in the ditches)

Choose wisely when you renew your household electrical goods and avoid wasteful water consumption. As a reminder, the average water consumption for a household is:


- cuisson des aliments 3 à 10 litres
- chasse d'eau 10 à 12 litres
- douche 60 à 80 litres
- bain 150 à 200 litres
- lave linge environ 100 litres
- lave vaisselle de 30 à 60 litres
- lavage d'1 voiture 300 à 400 litres
- arrosage des pelouses de 15 à 20 litres par m2

Préservez la qualité de l'eau dans votre réseau intérieur :
 Il est nécessaire d'avoir un réseau  intérieur bien conçu et en bon état. Les problèmes de qualité décelés sont le plus souvent dus à une mauvaise conception de l'installation mais aussi à une négligence d'entretien de celle-ci.

Les causes possibles de dégradation :


Que devez-vous faire ?

1 - Works on the interior network.
• Replace faulty or non-compliant pipes (e.g. lead pipes).
• Remove dead ends from your installation as these encourage stagnation and the development of micro-organisms.

2 - Temperature.
Temperature can encourage the development of micro-organisms and cause the chemical quality of the water to deteriorate.
• Bury pipes and protect the water meter.
• Avoid all risk of excessive exposure to heat for cold water pipes.

3 - Corrosion.
Corrosion changes the colour, taste and smell of the water (red water, foul odours), loads the water with undesirable and toxic chemicals and causes micro-organisms to proliferate in the sediment.
The juxtaposition of materials that are incompatible with each other can lead to corrosion (e.g. copper + galvanized steel)
A water treatment system (softener, etc.) may alter the chemical balance and lead to a risk of corrosion.

4 - Backflow: CAUTION
Backflow can occur as a result of back-siphonage or back-up. It is essential to have a backflow prevention system. You should therefore:
• Make sure that the water meter is fitted with a backflow prevention valve.
• Check that the boiler supply pipe is fitted with an appropriate backflow prevention system.
Make sure that the swimming pool is filled by an overflow system.

5 - Wells and private springs.
Water from a well or spring is considered in theory to be unsuitable for drinking but may be used for certain purposes other than sanitary and food preparation (watering gardens, washing cars, etc.). However, to avoid any risk of pollution or backflow, you should construct a network that is totally separate from the network used to receive the public water supply.
Please also note that wells must be declared to SIEAM.

Water is precious: don’t waste it
Its quality is very closely monitored: you can drink it without worry.

1, square d'Aquitaine - BP 55 40141 SOUSTONS Cedex contact@sieam40.fr 05 58 41 43 15 Lundi - Vendredi : 08h00 - 12h00 / 13h30 - 17h30