# BESIX Environment and Socogetra awarded Spiennes plant upgrade

> On 28 May, BESIX affiliates BESIX Environment and Socogetra were awarded IDEA’s contract to rehabilitate, upgrade and extend the Spiennes wastewater treatment plant. The facility is designed for about 8,000 population equivalents.

- **Source date:** 2026-05-28
- **Original source:** [BESIX Group](https://www.besix.com/en/news/besix-environment-and-socogetra-modernise-the-spiennes-wastewater-treatment-plant-belgium)
- **Reading time:** 1 min
- **Language:** en
- **URL:** https://voltformer.com/news/besix-spiennes-wastewater-treatment-contract-2026
- **Markdown:** https://voltformer.com/news/besix-spiennes-wastewater-treatment-contract-2026.md

## What the source reports

On 28 May, BESIX affiliates BESIX Environment and Socogetra were awarded IDEA’s contract to rehabilitate, upgrade and extend the Spiennes wastewater treatment plant. The facility is designed for about 8,000 population equivalents.

[BESIX Group](https://www.besix.com/en/news/besix-environment-and-socogetra-modernise-the-spiennes-wastewater-treatment-plant-belgium)

## Contract and role boundary

The report distinguishes BESIX Group from its affiliates, consortium partners and concession entities. The scope below is the one explicitly assigned to the named company or unit, not the whole project by inference.

[BESIX Group](https://www.besix.com/en/news/besix-environment-and-socogetra-modernise-the-spiennes-wastewater-treatment-plant-belgium)

## Project context

BESIX contracts range from civil works to industrial facilities, sometimes delivered through consortiums or specialist affiliates. Forecast completion dates and planned capacities remain projections where the source has not confirmed commissioning.

[BESIX Group](https://www.besix.com/en/news/besix-environment-and-socogetra-modernise-the-spiennes-wastewater-treatment-plant-belgium)

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