I’d be careful letting greywater hit the lawn without at least a basic filter—especially if you’ve got folks using random detergents or cleaners. I’ve seen some gnarly patches where soap scum just sits and stinks. Even a cheap mesh filter helps a bit, but honestly, I trust rainwater more for anything edible or where kids play. Greywater’s great in theory, but it can get messy fast if you’re not on top of what’s going down the drain.
I hear you on the soap scum issue—seen it myself after tenants used whatever they wanted in the laundry.
I tend to agree. Rainwater’s just less risky, especially when you can’t control what’s going down the drains. With greywater, unless you’re running a tight ship and everyone’s on the same page, it’s a gamble. I’ll use it for ornamental beds sometimes, but never near the veggie patch or play areas. Rainwater takes more setup, but the peace of mind is worth it.“Even a cheap mesh filter helps a bit, but honestly, I trust rainwater more for anything edible or where kids play.”
Rainwater definitely feels like the safer bet, especially if you’re talking about anything edible or spots where kids are rolling around. I’ve seen some setups where people get really strict about what soaps and detergents go down the drain, but honestly, it’s tough to keep everyone on board—especially in rentals or shared houses. Even with filters, there’s always that risk of something slipping through.
That said, greywater can be a solid option for things like ornamental gardens or even flushing toilets if you’ve got a good system in place. But yeah, I wouldn’t want to risk it near veggies or play areas either. Rainwater tanks take more work upfront—gutters, first flush diverters, keeping the tank clean—but once it’s set up, you know exactly what you’re working with. I guess it comes down to how much control you have over the water source and how much maintenance you’re willing to do. Personally, I’d rather put in the extra effort for rainwater and not have to worry about mystery chemicals showing up where they shouldn’t.
I hear you on the rainwater setup being more work upfront. We went with a basic rainwater tank a couple years back, mostly because I just didn’t trust what might end up in greywater—especially with teenagers in the house who don’t always read the labels on their shampoo. The cost was a bit of a hit at first, but honestly, maintenance has been pretty minimal since. I do wonder if anyone’s managed to make greywater work long-term without constant reminders about what goes down the drain... seems like a headache.
Rainwater tanks definitely seem more straightforward. I’ve worked on a few greywater installs, and you’re right—keeping everyone in the house on the same page about what goes down the drain is tough. Even with clear signs, stuff slips through. Some folks use those enzyme-based detergents, but it’s not foolproof. Rainwater’s just simpler long-term, even if the upfront work is more. The only thing I’d watch for is mosquito-proofing and cleaning out the filters every so often... but compared to greywater, way less hassle.
