3750 L Water Purification System for Second Homes and Total Oxidation Septic Tanks

The 3750-liter water treatment plant is the definitive and highly efficient solution for wastewater treatment in second homes, single-family homes, and residential areas without a connection to the municipal sewer system. Specifically designed to serve 4 to 5 residents, this treatment system combines advanced total oxidation technology with unparalleled structural robustness, guaranteeing optimal performance even in homes used intermittently or sporadically, such as those used on weekends and holidays.

Unlike traditional septic tanks that only perform primary settling of solids, this advanced wastewater treatment system purifies grey and black water through a continuous biological aeration process. The result is treated water of excellent quality that complies with current environmental regulations, allowing for its safe discharge into the environment or its reuse for watering green areas, in accordance with applicable local legislation. Its compact design with a fixed lid allows for discreet integration into the garden or property, protecting the interior from external elements and ensuring maximum durability against corrosion and the passage of time.

Main Features of the Purification System

• Total capacity of 3750 liters, perfectly sized for homes of 4 to 5 inhabitants.


• Total oxidation technology optimized for excellent performance in second home settings.


• Low energy consumption and quiet operation aeration system.


• Watertight and resistant structure with high durability and fixed safety lid.


• Effective treatment for both greywater and sewage, drastically reducing the organic load.


• Low maintenance costs and easy access for periodic inspection work.


• Product reference: GA90041.

Frequently Asked Questions about the 3750 L Water Purifier

Is a total oxidation wastewater treatment plant suitable for a second home?

Yes, this model is especially recommended for second homes. Total oxidation systems adapt perfectly to load variations and prolonged periods of inactivity, maintaining the system's biological capacity ready to function optimally from the moment the home is occupied again.

For how many people is this septic tank treatment system recommended?

The 3750 liter capacity has been technically calculated to efficiently cover the daily sanitation needs of 4 to 5 inhabitants, complying with the established water consumption standards per person per day.

What maintenance does the GA90041 model require?

Maintenance is simple and mainly consists of periodic inspection of the air insufflation system and emptying accumulated sludge from the primary compartment, the frequency of which will depend on the actual use of the installation, usually once or twice a year.

Can purified water be reused for irrigation?

The biological process of total oxidation significantly reduces the pollutant load and suspended solids. However, for the reuse of treated water in irrigation, current regional and local regulations must always be consulted to verify the specific discharge quality requirements.