Assuming you use the same amount of soap and what nots, and get the same amount of dirt and debris off your body, the more water you use during a shower, the easier it is to process the water at your sewage treatment plant, if your waste water is treated.

If your waste water isn't treated, and is discharged to water ways as-is, the more water you use, the more dilute your pollution.

If you've got a septic system, I dunno? Probably doesn't help, but if your system is well sized, no big deal? Some of your outflow probably recharges aquifers, so it's kind of circular (although a lot of the outflow evaporates, so less directly circular there)

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eru 7 months ago | parent [-]

> [...] the easier it is to process the water at your sewage treatment plant, if your waste water is treated.

It's easier to process per litre, but it is easier to process in absolute numbers?

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toast0 7 months ago | parent [-]

Part of processing is often adding clean water; to the extent that you've already done it upstream, the treatment plant can add less.

	▲	eru 7 months ago \| parent [-]
		Maybe. Though when you add clean water upstream that usually means water clean enough to be fit for drinking (because that what comes out of your tap.) When they dilute at the treatment plant, they can use somewhat dirtier clean water.