Questions tagged [greywater]

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23
votes
4answers
8k views

How to recover water from washing machine for toilet

In the last years I have been very concerned about the incredible waste of water from washing machine that could be easily used for toilet use, but up to now I have not found an easy way apart from ...
15
votes
3answers
4k views

What's an effective design for sending sink water to a toilet tank?

This answer to a question about a toilet/sink combo makes me wonder: What design considerations need to be taken into account if I was to modify my existing sink & toilet so that the sink waste ...
15
votes
2answers
3k views

Is it possible to reuse grey water in an apartment?

Is it possible to reuse greywater in an apartment, in which you can't modify the plumbing? Seems like it would be better to water plants with greywater than using fresh water.
12
votes
1answer
8k views

What are the cheapest and easiest methods to convert grey water to potable water?

What are the cheapest and easiest methods for converting grey water (of the usual sources: kitchen sink, shower, laundry, etc) to potable water that is safe to drink?
7
votes
2answers
325 views

Processing grey water (sink, shower) in off-grid situation

What is the best - cost, minimising negative environmental impact, simple - way to process grey water outflow? I plan to build an off-grid cabin, I will be harvesting rainwater, using it in my sinks/...
7
votes
1answer
1k views

What countries have the highest greywater reuse rates?

Links to hard information about countries with high rates of greywater recycling would be very helpful in influencing areas that have unfavorable laws.
5
votes
1answer
105 views

Toilet tank with both water main and waste water (underflow)

I'm looking to supply my toilet tank with rain water and grey water from, say, the washing machine, but if that's not enough water to fill up the tank, I want to use water from the water mains to top ...
4
votes
3answers
241 views

If I have a well, is gray-water really "wasted" when discharged directly in a septic system?

I live on an island dealing with water shortage issues in our sole source aquifer. The community has enacted a number of irrigation restricting laws, and there is significant discussion about various ...
3
votes
2answers
66 views

Favorable laws for graywater usage

I know that it is illegal to catch and use graywater in many US states. What states and/or nations have favorable laws for graywater usage?
2
votes
2answers
97 views

Is shower water a healthy source of graywater to flush toilets with?

I've been trying to think of creative ways to save on water usage, and one way I thought of was to collect graywater from showers or washing dishes to use for flushing the toilet to reduce # of ...
2
votes
0answers
28 views

Are there examples of Greywater reuse between buildings?

Are there any documented cases or examples about reusing greywater from a particular building in another adjacent building? For example: Using treated greywater from an office building for toilet ...
1
vote
1answer
134 views

Is it feasible to use constructed wetlands for greywater treatment in places where lakes freeze for more than half of the year?

Let's say village-sized community discharging grey water from shower water, human and animal wastes and laundry water. These villages use modern detergent and medicine (especially antibiotics), have ...
1
vote
0answers
86 views

What is the current best system to build greywater homes as comfortable as regular homes?

This is similar to, but more general than this question and referring to from scratch buildings. I've seen Create an Oasis with Greywater and it's an awesome resource to build a DIY system. The ...
1
vote
0answers
42 views

Where can I find graywater reuse quality thresholds for different uses? [closed]

I'm having a hard time finding specific up-to-date sources that contain clear guidelines and regulatory quality thresholds for graywater reuse. The only thing I could find was the EPA 2012 report and ...