impurities

Dealing with SoA impurities after you've identified the boundaries is way easier than coordinating multi-service refactoring or working within a broken SoA.

There are some impurities that you can filter through your faucet, this is analogous to the software firewall.

Is it only from specific impurities which are themselves toxic elements, or does the carbon play a role?

The only concern would be whether the original impurities are more dangerous than the filler you use.

That it contained under n ppm of impurities, that it did not leak more than 0.001%/year, maybe.

Their results show that drug quality is much higher from darknet sales and has fewer impurities that cause health risks.

When used, it degrades to water and salt as the oxygen pops off to oxidize impurities.

Additional harms like risk of violence or overdoses due to impurities are secondary at best.

Think about the dangers of illegal drugs - the chemical itself isn't generally the problem, it's the impurities / bad manufacturing.

The salinated impurities that are a byproduct of this process will kill everything in the zone that is is reintroduced to.

I can see that being better for rinsing away impurities but also requiring quite a bit more water.

You're supposed to use cold water, though I suppose warm water might possibly extract more impurities.

If you were to pour the water "down the drain" as OP suggested, it goes to a water treatment plant, has impurities removed, and re-enters the groundwater system.