effluent

Etymology

From French effluent, from Latin effluens, effluentis.

adj

1. Flowing out; outflowing.
   But while the effluent beams of the sun, and their quickening power in the natural sphere, furnish a good illustration of my idea of the Holy Spirit, I may, perhaps, illustrate the idea still better by a reference to human thoughts and affections […] 1860, Benjamin Franklin Barrett, Letters on the Divine Trinity: Addressed to Henry Ward Beecher

noun

1. (countable) A stream that flows out, such as from a lake or reservoir; an outflow; effluence.
2. Sewage water that has been (partially) treated, and is released into a natural body of water; a flow of any liquid waste.
   One of the hidden glories of Victorian engineering is proper drains. Isolating a city’s effluent and shipping it away in underground sewers has probably saved more lives than any medical procedure except vaccination. 2014-06-14, “It's a gas”, in The Economist, volume 411, number 8891