Anya had the proof on her laptop: water samples showing copper sulfate levels three times the legal limit.

“It costs less than the lawsuit I’m filing tomorrow,” she said. “And less than the principle of not murdering a river.”

A month later, Anya stood on the same catwalk. Unit Seven’s plume was thinner now, less a ghost and more a wisp. Below, a new skid of gleaming stainless steel pipes and white RO membranes hummed softly. A truck was pulling away, loaded with drywall-grade gypsum.

But Unit Seven was greedy. Its evaporation left behind a concentrate of salts and treatment chemicals—the “blowdown.” And the Combine was secretly piping that blowdown into the Blue Heron at night.

The Meridian Combine’s new “hyper-efficient” cooling tower, Unit Seven, was a marvel of the principles she championed. It used counter-flow design, high-density PVC fill, and drift eliminators so precise they could catch a mist of angels’ breath. But the river beside it, the once-teeming Blue Heron, was dying.

Dr. Anya Sharma slammed the PDF shut. Cooling Towers: Principles and Practice . It was a 1,200-page tomb of thermodynamic tables and fan-blade aerodynamics. She had written half of it. Now, it felt like a eulogy.

“You shouldn’t be here, Dr. Sharma,” Pete said.

Pete handed her a cup of coffee. “The VP wanted me to thank you. He said, ‘Tell her her book wasn’t completely useless.’”

Anya finally turned. “That’s where you’re wrong. The practice you’re using is outdated.” She opened her PDF to Chapter 14: ‘Side-Stream Filtration and Softening.’ “You don’t dump the blowdown. You treat it. You precipitate the calcium out as gypsum. You sell it to the drywall plant. You run the remaining water through a reverse osmosis skid. You send clean water back to the tower. Zero liquid discharge.”