Water

Water belongs in the operating-flow view: a construction list can include pumps, but it cannot prove the network supplies every consumer.

When it fits: Include it when the chosen process or settlement branch draws water, then map the complete source/consumer chain.

The tradeoff: One source recipe run makes 6 and lists 10 Seawater, 1 Coal at Basic distiller; 15 recipe variant(s) for this output are grouped together. Verify access where the pack is incomplete. Do not read the recipe quantity as a stable flow rate; pumping, transport and competing consumers are separate constraints.