Leni Nyssen of Alchemy Farms with her simple reed bed filtering system.
Story and photos by Linda Moon
Setting up a basic system for recycling grey water is cheap, easy and worthwhile.Read about a garden in North Leura and learn from a permaculture designer how it can be done.
Key Points:
Save money and time watering, reduce water waste and hydrate your garden by reusing grey water.
A local permaculture designer explains how she created a simple setup.
Learn the local rules and regulations around using grey water.
“We want to grow a lot of food, and we have kids and do a lot of washing, so what better way to use that water than out to the garden.” Leni Nyssen of Alchemy Farms Permaculture Design is showing off her basic grey water filtering system: a simple version of a ‘reed bed system’ which actually looks easy to set up.
The permaculture consultant and educator’s backyard (in North Leura) is littered with sprawling veggie patches and kids’ toys, a rambling dog and chickens. The message: you don’t have to be wealthy, a plumber, living on acreage or even a homeowner to re-use your grey water.
What is grey water?
It’s the wastewater from our bathrooms and laundries. With relatively less chemicals, fats and biological matter than dark grey water (from the kitchen) or black water from toilets, it’s the recycling go-to of wastewater.
By re-using her washing machine water, Leni reckons her system waters most of the garden for her. The family’s washing machine uses an estimated 80 to 100 litres per load.
Leni’s reed bed system
From the washing machine hose, plastic piping dangles downstairs into an old bathtub at the side of the house. Gravity (Leni’s washing machine is on the second floor) propels the water forward.
The bath contains stones, gravel, sand, reeds and other water loving plants. Based on the concept of wetlands, these are partitioned into a series of sections, including a mini pond area, that slows the water flow, filtering and cleansing it. Having a smaller outlet than inlet, also helps stem the flow, Leni explains. The whole process takes about 20 minutes.
There’s no odour. “It’s only when there’s storage and bacteria starts to get active, that it starts to smell,” she explains.
The grey water is fed to the garden via outlet hosing attached to the bottom of the bath. As the garden slopes gently downhill, there’s no need for a pump. Too easy!
The grey water is fed into deep mulch-covered swales (trenches) in the food forest area to help grow fruit trees, vines and perennials.
Is grey water okay for the garden?
Leni, who studied permaculture design and education with Geoff Lawton and Rowe Morrow, views grey water recycling as another helpful method for improving soil moisture and the resilience of our gardens to dry conditions. She says, “the real focus in permaculture is slowing water and spreading it and soaking it into the landscape.”
“Living in such a fire-prone area, we need to focus on making sure the landscape is hydrated” – Leni Nyssen.
The main issue with grey water is sodium, which in turn affects soil pH. Grey water from the washing machine (laundry products tend to be high in sodium) usually makes soil more alkaline. Phosphates, oils and chemicals are other common problems in grey water.
For the laundry, Leni recommends soap nuts (which you can get from the Blue Mountains Food Co-op), or pure soap flakes. “That has the least impact when it goes out to the soil,” she says. “The main thing is it [grey water] should go to the root systems rather than leaves that you’re going to pick and eat.”
Leni Nyssen’s permaculture garden gains the advantage of extra hydration from grey water over summer.
More options for using grey water
A reed bed bath system isn’t your only option.
Buckets: Catch water in the shower, bath or basin or the rinse cycle of the washing machine.
Water diversion devices: Inexpensive and can be installed by a plumber. Alternatively, use a grey water diversion hose attached to your washing machine. Bathroom or laundry water can be diverted into your land (such as trenches, swales and basins around trees) but should be cooled in a holding trench or other collection point first.
More expensive and complex domestic waste water treatment and storage systems with pumps, filters and more.
Note: with any drip irrigation or ag-piping containing holes, filters are a must to avoid them getting clogged with lint, hair and other stuff.
A grey water diverter for sale at a local hardware shop is an inexpensive option.
Wise and safe grey water use
Also check out these tips from the experts:
Use the most eco-friendly, low-sodium, low-phosphate laundry and personal care products possible.
Don’t use water after dyeing your hair, cleaning the bath, basin and so on. Bleaches, drain cleaners, disinfectants, hair dyes, shampoos, toothpaste, mouthwash, perfumes and many other products contain chemicals and other ingredients harmful to soil health (and possibly to you too!).
Don’t use grey water on vegetables, herbs and root veg.
Don’t store untreated grey water for longer than 24 hours to prevent bacteria build-up.
Distribute grey water to the subsurface. Don’t let it pool on the surface: a recipe for bacterial or algal bloom.
Don’t use water from washing nappies.
Regularly monitor and maintain any reed beds for bacteria and algae.
Never use hot water directly on the garden. It will kill beneficial soil organisms.
Don’t let pets or wildlife drink grey water or let kids play in it.
Give your garden regular breaks from grey water.
Monitor soil health and pH. Regularly add organic matter to soil.
Avoid watering acid-loving plants, like berries, camellias and rhododendrons, with grey water.
Try “hydro zoning” your garden according to water needs. Position plants with similar water needs together. Direct grey water to the most thirsty.
Know the rules
You don’t need council approval to re-use grey water on your land, but you do have to abide by certain rules around its use. These include only using it to irrigate the sub-surface of your garden using pipes / hose 100mm below the ground and avoiding using it during rainy periods and if someone at home has a contagious disease. Purple hoses and fittings should ideally be used to identify grey water recycling.
Watch the video (below) about Leni Nyssen’s reed bed system. Leni can offer guidance on how to create your own DIY system, as well as advice on how to live more sustainably and ecologically.
This story has been produced as part of a Bioregional Collaboration for Planetary Health and is supported by the Disaster Risk Reduction Fund (DRRF). The DRRF is jointly funded by the Australian and New South Wales governments.
Delicious plant based and gluten free pastries courtesy of Clean Cravings at World Animal Day today at the Blue Mountains Planetary Health Centre. Such a lovely day! #planetaryhealth #worldanimalday...
Paul Nagle and other members of the Blue Mountains Bird Observers leading 40 people on a Guided Breakfast with the Birds as part of World Animal Day at the Blue Mountains Planetary Health Precinct. It`s a stunning day. Lots more to come at 33-39 Acacia St Katoomba....
A huge thank you to Josh Logan from Logan Signs, Lithgow, for installing our Circular Water Signage in time for our World Animal Day Celebration today at the Blue Mountains Planetary Health Centre (33-39 Acacia St Katoomba). We have a full program of events with lots of information on how to prepare for the summer ahead and how to create urban areas that help us share our home respectfully with all species. It will be a fun family day too with storytime, craft and live music for kids! (Link in profile) #worldanimalday #planetaryhealth #familyday #katoomba #bluemountains...
And our Wild Life exhibition is now up for World Animal Day tomorrow at the Blue Mountains Planetary Health Centre. Photographs by Warren Hinder, Merryl Watkins, Holly Kent and Tracy Burgess. Check out all the other events from stalls, talks, possum box demo, kid`s craft and animal storytime, plant based food and live music to Bushcare. @33-39 Acacia St Katoomba Link in profile. #planetaryhealth #worldanimalday #katoomba...
Join the Blue Mountains Planetary Health Initiative at World Animal Day this Saturday 5 October for a discussion on the history of the Plant Based Food Movement in Australia and a discussion of exciting contemporary trends. It will be followed by a Plant Based Cheese Degustation to launch the Plant Inspired Community Cooking Project. This will be a series of cooking classes to introduce the community to plant based cooking techniques. The event is free but places are limited so bookings essential (link in profile): https://bit.ly/3Bzbwhu #plantbasedcooking #worldanimalday #bluemountains #katoomba #planetaryhealth #communitycooking...
We share the Blue Mountains with so many extraordinary beings but have you seen them and do you know their names? Do you know the difference between a Royal Spoonbill and an Eastern Shrike-tit, or the difference between a bandicoot and an antechinus? Come and check out our Wild Life Exhibition at World Animal Day this Saturday to learn more from the stunning photographs by Warren Hinder, Merryl Watkins, Holly Kent and Tracy Burgess. There will be also be a Breakfast with the Birds at 8.30am, Animal Storytime and Craft for kids from 10am, stalls, talks, food and live music. The day is free but please book via Eventbrite to help us cater (link in profile): https://bit.ly/4eMhbz0 @bluemountainswalks @merrylwatkinsphotography @bestofbluemountains #royalspoonbill #easternshriketit #wildlife #birdsofthebluemountains #bluemountains #katoomba #worldanimalday #biodiversity #planetaryhealth...
To coincide with the first day of Bushfire Season we launched Air Watch at the Planetary Health Centre yesterday. For the last seven years Blue Mountains Unions & Community have been working tirelessly to ensure residents of the Blue Mountains and Lithgow are able to measure and track the quality of the air we breathe. The Blue Mountains Planetary Health Initiative has worked closely with them over the last year and now there are 20 PurpleAir monitors distributed throughout the Blue Mountains and Lithgow, including one at the Planetary Health Centre. You can now view real time air quality measurements at each of our local news sites and on the Purple Air Map https://map.purpleair.com We have 10 more sensors available, so if you’d like to install a sensor, members of BMUC will be at World Animal Day at the Planetary Health Centre this Saturday 5 October to take applications and share more information about the project. Bookings for World Animal Day here (link in profile): https://www.eventbrite.com.au/e/world-animal-day-promoting-respectful-cohabitation-tickets-1029328889417
It was a fabulous day yesterday as each speaker highlighted how critically important this project is: Dr Rosemary Dillon CEO of Blue Mountains City Council Trish Doyle MP Dr Jenna Condie from Blue Mountains Parents for Climate Dr Maggie Davidson, environmental scientist from Western Sydney University Matthew Riley, Director Climate and Atmospheric Science from NSW Department of Climate Change, Energy, the Environment and Water and Peter Lammiman and Ann-Maree McEwan from the BMUC’s Airwatch Committee. @bluemountainsunionists @nswdcceew @bluemountainscitycouncil @westernsydneyu @trishdoylemp @parentsforclimatebluemountains #airqualilty #airqualitymonitors #bluemountains #planetaryhealth...
Treat yourself this weekend with a fun-filled and informative World Animal Day event at the Planetary Health Precinct in Katoomba. As well as a Breakfast with the Birds, stalls and a possum box demonstration, there will be a fabulous wildlife exhibition with photos by Warren Hinder, Merryl Watkins, Tracy Burgess and Holly Jayne; live music with Mem Davis, Joe Flood and Duck Keegan; lots of fun for kids with Sharon Baldwin and Naomi Crew leading animal storytime and craft with Julie Refferty; delicious plant based, gluten and dairy free treats, pastries and donuts from Clean Cravings; a plant based cheese degustation and warming Dahl, rice roasted cauliflower with veggies, pakoras, tamarind chutney, and salad courtesy of Bibi’s Kitchen. Come and learn more about Blue Mountains Bird Observers, Blue Mountains Conservation Society, WIRES, Action for Animals Blue Mountains and Animal Sanctuaries, Wombat Rescue, the Women’s Shed, and Animal Welfare Laws in Australia.
Guest speakers throughout the day will include Elizabeth Ellis, lecturer and author of Australian Animal Law; Hal Ginges, a local lawyer and animal activist from Action for Animals who advocates for animal rights and raises money for sanctuaries; Mark Berriman who has been President of the Australian Vegetarian Society NSW since 1989, as well as Co-ordinator for Animal Liberation NSW, Director of the Natural Health Society of Australia and the World League for Protection of Animals; and Teya Brooks Pribac, a researcher in the area of animal studies and the award-winning author of Enter the Animal. She’s also published Not Just Another Vegan Cookbook and will be sharing her culinary skills with the community in the Plant Inspired Community Cooking Project.
The event is free but please book your place to help us cater (link in profile): https://www.eventbrite.com.au/e/world-animal-day-promoting-respectful-cohabitation-tickets-1029328889417
We are so looking forward to kicking off World Animal Day Celebrations on Saturday 5 October with an 8.30am Breakfast with the Birds. Join Paul Nagle from the Blue Mountains Bird Observers on a guided bird walk around the Planetary Health Precinct visiting different habitats on the site to observe and talk about the birdlife that is resident and that visits the site. Binoculars are highly recommended.
World Animal Day will be an inspiring family day celebrating the extraordinary diversity of animals we share our world with! The theme is `Promoting Respectful Cohabitation`. Bookings for the Breakfast with the Birds (link in profile) or here: https://www.eventbrite.com.au/e/breakfast-with-the-birds-tickets-1028664983657
We all need clean air to breathe, but how can we tell how clean our air is? Thankfully the Air Watch subcommittee of Blue Mountains Unions & Community has worked for years to find ways to help us measure the quality of the air we breathe. Over the past year the Blue Mountains Planetary Health Initiative has worked with them to install Purple Air Quality monitors across our bioregion from Lithgow to the Lower Mountains. You can now view real time air quality on each of our Local News Sites! Air Watch`s Purple Air quality monitors give the Blue Mountains` 78,000 residents, workers and 3 to 5 million/year visitors the power to make timely, informed decisions about their activities and health. It will also be a reliable source of data for the scientific community. To coincide with the start of the Bushfire Season on Tuesday 1 October, we`re inviting the whole community to join us to launch Air Watch Blue Mountains and Lithgow at the Planetary Health Precinct. If you`d like to join us book a place here https://bit.ly/4dp2qko (link in profile)
Today`s the day for the Blue Mountains Sustainability Festival! @bluemtns_sustainability_fest We`ll be at the Speakers Forum at the Blue Mountains Cultural Centre at 10.15, talking about volunteer opportunities with the Blue Mountains Planetary Health Initiative, and then giving a presentation at 2.30pm. There`s a jam-packed speakers program, community stalls and workshops, and a Shopping Trail through Katoomba and Leura. You can find more information on the website at https://resilientbluemountains.org/sustainability-festival/
Our newsletter is out! Read about the Blue Mountains Sustainability Festival this Saturday, the Air Watch Launch next Tuesday and the upcoming World Animal Day: Promoting Respectful Cohabitation Event at the Planetary Health Precinct on 5 October. And check out the comprehensive Springwood & Lower Mountains Repairers Guide (link in profile): https://bit.ly/3TJiKFR
You can subscribe to receive this newsletter via any of our local news sites.
Linda Moon has lived in the upper Blue Mountains since childhood and is a freelance writer for Australian media. A qualified naturopath, permaculture designer, mother and former student of social work, her passion is building local community, gardening, mental, emotional, social, housing and environmental health – all of which are linked!
A cadetship with the Healthy Waterways Team at Blue Mountains City Council has helped 23-year-old Will Goodwin pursue a passion for helping wildlife and nature.
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