There are certain topics polite society tends to avoid.
Politics at Thanksgiving.
Who left the dishes in the sink.
And, perhaps most of all…
Pee.
Yet here we are.
And honestly? If we’re serious about becoming a more regenerative culture—one that lives by the Four Great Truths instead of the old extractive mindset—it may be time to have a surprisingly practical conversation about what we flush away every single day.
Because here’s the startling truth:
Every time we urinate into a toilet and flush, we are literally flushing away valuable plant nutrients… using gallons of perfectly clean drinking water to do it.
Nature, meanwhile, is probably shaking her head.
Yes. Quite literally.
Human urine contains significant amounts of:
Nitrogen
Phosphorus
Potassium
In other words…
the exact same core nutrients listed on commercial fertilizer bags as N-P-K.
Most of the nitrogen in urine is present as urea—the same nitrogen compound used in many synthetic fertilizers.
Researchers estimate that urine contains:
roughly 80–90% of the nitrogen,
50–65% of the phosphorus,
and 50–85% of the potassium found in household wastewater.
Or to put it more bluntly:
Your kidneys are producing fertilizer every day.
Congratulations.
You are a mobile nutrient recycling system.
For most of human history, cultures understood that nutrients belonged in the soil.
Then modern sanitation arrived—which absolutely helped reduce disease and improve public health—but it also created a strange disconnect.
We began treating “waste” as something to remove rather than something to cycle.
So now:
we mine phosphorus,
manufacture synthetic nitrogen using fossil fuels,
buy fertilizer in plastic bags,
and simultaneously flush nutrient-rich urine into water treatment systems.
It’s a little like buying groceries while throwing dinner into the trash.
One of the deepest lessons of ecology is this:
In healthy ecosystems, waste from one process becomes food for another.
Fallen leaves become soil.
Dead trees feed fungi.
Animal manure feeds grasses.
Nothing is wasted.
Yet modern industrial culture often behaves as though humans exist outside these cycles.
One Cause calls this separation one of the Great Untruths.
And perhaps nowhere is this more obvious—or more oddly humorous—than our relationship with pee.
Surprisingly well.
Numerous studies have shown that human urine can effectively fertilize crops and gardens when used properly.
Researchers studying urine fertilization found:
improved plant growth,
increased yields,
and performance comparable in some cases to synthetic fertilizers.
Gardeners often notice especially vigorous leafy growth because urine is nitrogen-rich.
Translation?
Your tomatoes may become strangely enthusiastic.
Let’s talk safety and common sense.
This is not about randomly spraying pee around the backyard like some kind of eco-apocalypse survival cult.
There are wise ways to do this.
And unwise ways.
Very unwise ways.
Fresh urine is potent.
Most gardeners dilute it somewhere between:
1:10
and 1:20 with water
Some sources recommend even weaker solutions for delicate plants.
Think of it as a concentrate, not a sports drink for kale.
Apply near the roots or soil surface rather than directly onto leaves.
This:
reduces odor,
minimizes leaf burn,
and helps nutrients absorb into the soil.
Many medications can pass through urine.
If someone is taking:
chemotherapy drugs,
heavy pharmaceuticals,
or has an active urinary tract infection,
it’s best not to use their urine in the garden.
Good rule of thumb:
Healthy person + healthy system + common sense.
Too much nitrogen can overwhelm plants.
If your zucchini suddenly looks like it’s training for the Olympics but produces no vegetables…
you may have gone overboard.
Many eco-gardeners begin by using diluted urine on:
compost piles,
fruit trees,
corn,
squash,
ornamental plants,
and nitrogen-hungry vegetables.
If the “ick factor” feels strong at first, starting with compost is often psychologically easier.
Here’s another astonishing piece of the puzzle:
Modern toilets use drinking water to transport nutrients away from us.
Millions upon millions of gallons.
Every day.
Meanwhile, droughts increase.
Aquifers shrink.
And farmers spend enormous amounts on synthetic fertilizer.
The irony is hard to miss.
Not every family is going to install composting toilets tomorrow.
And honestly, that’s okay.
This isn’t about purity.
It’s about awareness and thoughtful experimentation.
Maybe it starts simply:
using diluted urine on compost,
feeding fruit trees,
or teaching kids about nutrient cycles.
Imagine the conversation:
“Dad… are you peeing on the compost pile?”
“Yes, son. I’m participating in regenerative nutrient recovery.”
“Mom… Dad’s being weird again.”
Probably true.
But maybe wonderfully weird.
I can already imagine trying to explain this to my grandchildren.
Logan would likely think it’s hilarious.
Piper might announce it loudly in public.
“PAPA PUTS PEE ON THE PLANTS!”
Which, admittedly, could create awkward moments at the garden center.
Still…
there’s something deeply healing about reconnecting children to natural cycles before industrial culture convinces them that everything natural is somehow embarrassing or “gross.”
Kids often understand ecology better than adults.
They instinctively know:
soil matters,
worms matter,
trees matter,
and life feeds life.
This article isn’t really about urine.
Not entirely.
It’s about whether humanity can relearn how to participate in living systems instead of endlessly extracting from them.
It’s about moving from:
waste → regeneration
separation → interconnection
consumption → reciprocity
The Four Great Truths aren’t abstract philosophy.
They show up in kitchens.
Gardens.
Compost piles.
Water bills.
And yes…
occasionally in conversations polite society would rather avoid.
I’m not suggesting everyone abandon indoor plumbing and sprint into the woods with a watering can.
But I am suggesting that regenerative thinking often begins by questioning habits we’ve never examined.
Nature wastes nothing.
Perhaps the future won’t be built only through massive technological breakthroughs…
but also through millions of small, humble acts of reconnection.
Even the surprisingly yellow ones.
Rich Earth Institute – Guide to Using Urine Fertilizer for Home Gardens
Scientific American – Human Urine Is an Effective Fertilizer
PS - Have you had personal experience with a composting toilet that allows you to reclaim and use your family’s pee? If so, I’d appreciate hearing about it. Leave a comment.
Comments
Nothing yet. Say the first thing.
Sign in to join the conversation.