Water MAC Curves by Sector
First French report on marginal water compliance cost by industrial sector. Methodology inspired by McKinsey carbon MAC curves, adapted to the French regulatory framework.
Total water compliance cost by sector
Agroalimentaire
380k€
average total water compliance cost
Agriculture
210k€
average total water compliance cost
Industrie chimique
650k€
average total water compliance cost
Textile
490k€
average total water compliance cost
Data Centers
520k€
average total water compliance cost
Top 5 water quick wins across all sectors
Actions offering the best impact/cost ratio — accessible to all companies.
| # | Action | Cost | Compliance impact | Timeline | Frameworks |
|---|---|---|---|---|---|
| #1 | Audit eau + compteurs divisionnaires Efficience eau | 5k€ | +8% | 6 months | CSRD, IOTA |
| #2 | Rapport CSRD E3 (avec AquaSignal) Conformité réglementaire | 15k€ | +12% | 3 months | CSRD |
| #3 | Déclaration préleveurs BNPE Efficience eau | 8k€ | +5% | 3 months | IOTA, LEMA |
| #4 | Déclaration IOTA + plan gestion eau Conformité réglementaire | 20k€ | +10% | 6 months | IOTA, LEMA |
| #5 | CDP Water Security questionnaire Conformité réglementaire | 12k€ | +5% | 3 months | CSRD |
Methodology
Covered regulatory frameworks
- WFD — Water Framework Directive (2027 target)
- CSRD E3 — Mandatory water reporting 2024-2025
- PFAS — EU threshold 0.1 µg/L total PFAS
- IOTA — Withdrawal/discharge permits
- LEMA / Environmental Code
Water MAC marginal cost
Each action is ranked by increasing marginal cost:
Marginal cost = Action cost (€) / Compliance impact (%)
Inspired by McKinsey carbon MAC curves, adapted to the French water regulatory framework.
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