Find engineers who design, calculate and check work to WHO Drinking Water Guidelines. The same engineering task can require completely different design standards by jurisdiction — which is why this is a structured field and not a keyword.
Nominating the standard is one of the highest-value things you can do in a brief. A design produced to the wrong code is not a design that needs adjusting — it is work that has to be redone, and the cost of finding that out late is entirely avoidable.
State WHO Drinking Water Guidelines and your jurisdiction explicitly. The engineer should confirm the choice before starting and record it in the design basis, so every downstream check is traceable back to the clause it was made against.
Climate Engineering / Climate Adaptation Engineering specialist — life cycle assessment & water network modelling
Environmental Risk Engineering specialist — carbon footprint accounting & stormwater modelling
Solid Waste Engineering specialist — green building certification & air dispersion modelling
Air Pollution Control Engineering specialist — green building certification & stormwater modelling
2DaysRemoteClimate Engineering / Climate Adaptation Engineering
2DaysRemoteEnvironmental Risk Engineering
4DaysRemoteEnvironmental Risk Engineering
5DaysOn-site availableSolid Waste Engineering
3DaysRemoteAir Pollution Control Engineering