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Love veg, hate watering cans

 
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Last Post by Jancold 1 month ago
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Jancold
 Jancold
(@jancold)
Reputable Member Member
Joined: 4 years ago
Posts: 186
04/08/2026 5:57 pm  

I have a 12v submersible inline pump just sitting over the plughole in the bath piped to a grey wheely bin (rescued from the dump). Since the bin is well below the bath I only have to run the pump for 30 seconds and the syphon takes over. A battery from an emergency car starter pack, no longer needed as I have an EV, one charge lasts for the season. Each quadrant of the garden gets a bathload after settling for 24 hours and I dump the soapy scum at the bottom every couple of weeks. I've run this setup for the last three summers. Should I ask South West Water for  rebate since it is not going down their sewer? 😀 


Daikin 6Kw ASHP.
MG4 EV, Solis 8KW inverter, 32KWh battery
1926 Semi with loft and wall cavity insulation, all radiator.


   
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Majordennisbloodnok
 Majordennisbloodnok
(@majordennisbloodnok)
Famed Member Moderator
Joined: 5 years ago
Posts: 2126
Topic starter 04/08/2026 6:34 pm  

That’s brilliant, @jancold. Unfortunately, our bath is on the ground floor but that’s exactly the kind of thing I’m considering next year or so.

On the plus side, we don’t have mains sewage so we don’t have to pay for anything except fresh water supply. That’s why the borehole is starting to look tempting for the ability to stick two fingers up at the water supplier…


105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"


   
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Jancold
 Jancold
(@jancold)
Reputable Member Member
Joined: 4 years ago
Posts: 186
04/08/2026 6:55 pm  

My dear daughter came for a bath and was given clear (I thought) instructions on how to use the system. However after using the bath, 20 mins later a thumping sound came from upstairs, she had left the pump running and it was now dry. No damage was done however but had it been , say a bilge pump with a switch (some can detect water) it would be fine to pump the grey water left to it's own devices. You'd need to charge the battery more often however.  Anyway as long as I have enough hops for my brews next year I'm happy!


Daikin 6Kw ASHP.
MG4 EV, Solis 8KW inverter, 32KWh battery
1926 Semi with loft and wall cavity insulation, all radiator.


   
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