Rainwater toilets and greywater showers: City tries new water-saving tricks

Honestly, you nailed it with the “part-time job” bit. I’ve worked on a few greywater installs and, unless you’re going high-end with auto-flush filters and accessible piping, you’re looking at regular maintenance. Filters clog, valves stick, and leaks sneak up in older homes - especially with DIY setups. If you’re not checking things monthly, you’ll miss something. New builds with dedicated greywater plumbing are smoother, but retrofits always seem to need more babysitting. I’d say the tech’s getting there, but right now, it’s definitely not a hands-off thing.

Yeah, you’re spot on about the maintenance. I always joke that these systems are like needy houseplants - ignore ‘em and things get ugly fast. Still, when they’re dialed in, it’s pretty satisfying. Retrofits do seem to have a mind of their own, though… never a dull moment.

Honestly, I get the appeal of these setups, but I’m always a bit wary about the “set and forget” mindset. Water systems - especially retrofits - can hide issues until they’re big problems. I’d rather over-check than risk leaks or contamination. Maybe I’m just paranoid, but better safe than sorry...

“Water systems - especially retrofits - can hide issues until they’re big problems. I’d rather over-check than risk leaks or contamination.”

I’m right there with you on the cautious side. I’ve seen a buddy’s basement get trashed from a slow leak he didn’t catch for months - total nightmare. I do like the idea of rainwater toilets and greywater setups, but I just can’t bring myself to trust them without regular checks. Maybe it’s overkill, but I do a quick look every weekend, especially around joints and valves. Those little drip pans under fittings have saved me more than once.

I will say, some of the newer systems have decent leak sensors and auto shut-offs now, which helps my peace of mind a bit. Still, nothing beats a flashlight and getting your hands dirty now and then. I’d rather be “paranoid” than mopping up a mess at 2am...

I get the paranoia, honestly. We moved in last year and I’m still learning where all the pipes run. I tried to be proactive and installed a couple of those cheap water alarms under the sinks and near the water heater - figured it’s better than nothing. Haven’t had any leaks yet, but I did catch a slow drip from a loose connection in the laundry room that could’ve turned ugly if it went unnoticed.

I’m curious about these rainwater setups too, but I’m not sure I trust myself to keep up with all the maintenance. The idea of saving water is great, but I’d probably be checking for leaks every other day at first. Maybe once I get more comfortable with the basics, I’ll give it a shot. For now, just trying to avoid any 2am surprises...

Those water alarms are a solid move - caught a slow leak under my own sink the same way. With rainwater systems, I keep wondering how folks handle winterizing them. Does freezing ever mess with the pipes or storage tanks? Seems like a headache if you’re not on top of it.

With rainwater systems, I keep wondering how folks handle winterizing them. Does freezing ever mess with the pipes or storage tanks? Seems like a headache if you’re not on top of it.

Yeah, freezing can definitely be a pain. I tried setting up a basic rain barrel setup a couple winters ago, and totally forgot to drain it before the first freeze. The barrel cracked right down the side - lesson learned. Now I always disconnect and empty everything before it gets cold, but I’ve seen some folks insulate their tanks or even bury them below frost line. Not sure I trust myself to pull that off, but it seems to work for some. Pipes are trickier... heat tape maybe, but that feels like overkill for my setup.

Freezing is definitely a big concern with rainwater systems, especially if you’ve got any exposed piping or above-ground tanks. I’ve seen more than a few cracked barrels and split PVC over the years - draining and disconnecting before winter is pretty much a must unless you’re running something more permanent. Insulating helps, but it’s only so effective, especially in really cold climates. Burying tanks below the frost line works but that’s a whole project on its own, not exactly DIY-friendly for everyone. Heat tape can work for pipes if you’re determined to keep things running year-round, but yeah, it does add complexity and some extra risk if it fails. Have you ever tried using flexible tubing instead of rigid pipe? Sometimes it’ll expand a bit with freezing rather than just shattering... not perfect, but might buy you a little leeway.

Have you ever tried using flexible tubing instead of rigid pipe? Sometimes it’ll expand a bit with freezing rather than just shattering...

Had a job last winter where someone used that PEX stuff for their rainwater lines. It actually held up better than the old PVC, but the fittings still leaked after a hard freeze. Ever tried wrapping valves with those foam covers? Sometimes it helps, but if you get a real cold snap, nothing’s foolproof. Just curious - has anyone found a heat tape that doesn’t fail after a couple seasons? I’ve replaced more than a few...

Heat tape’s always been hit or miss for me too. Even the “heavy duty” stuff seems to crap out after a couple winters. I’ve had better luck just draining everything down if a deep freeze is coming, but that’s not always practical. Those foam covers help a bit, but yeah, nothing’s bulletproof once it gets really cold. PEX is decent, but those plastic fittings can be a weak spot - seen a few split right at the threads.

“Even the ‘heavy duty’ stuff seems to crap out after a couple winters. I’ve had better luck just draining everything down if a deep freeze is coming, but that’s not always practical.”

Honestly, I’ve run into the same issues with heat tape - especially on outdoor lines or in crawlspaces. The “heavy duty” label doesn’t mean much once you get a few hard freezes in a row. Draining is definitely the safest bet, but like you said, it’s not always doable if you’ve got tenants or systems that need to stay live.

On the PEX front, I’ll take it over copper for freeze resistance, but those plastic fittings are a known weak link. I’ve started swapping them out for brass whenever I do repairs - costs a bit more up front, but way fewer callouts for split threads or leaks later. Foam covers are better than nothing, but once you’re below -10°F for a few days, they’re just delaying the inevitable.

If the city’s pushing rainwater and greywater setups, they’d better be thinking about winterization from the start. Those systems are great in theory, but if they’re not built with freeze protection in mind, you’re just asking for headaches down the line.

Yeah, that “heavy duty” label is just marketing half the time.

“Foam covers are better than nothing, but once you’re below -10°F for a few days, they’re just delaying the inevitable.”

Rainwater and greywater setups sound cool, but if they freeze up mid-winter, folks will be wishing for good old city water again...

I get the concern, but I think we’re underestimating how much these systems can be winterized. A few thoughts:

- Insulated tanks and buried lines do a lot more than foam wraps on exposed pipes. Some setups even run a tiny circulation pump to keep things above freezing.
- Brass fittings are solid, but with PEX, a lot of people are using push-to-connect stuff that can handle expansion pretty well.
- If you’re serious about using rain or greywater in cold climates, planning is everything. Heated enclosures, drain-back systems, even just draining the lines when not in use - there’s options.

Not saying it’s easy or cheap, but city water isn’t totally fail-safe either. We had a main break last winter and everyone was melting snow for toilets... Sometimes the backup is what saves you. Just takes some extra thought to make alternative setups reliable year-round.

Not saying it’s easy or cheap, but city water isn’t totally fail-safe either. We had a main break last winter and everyone was melting snow for toilets...

I hear what you’re saying, but in my experience, “planning is everything” sounds good on paper - until someone skips a step or cheap equipment gets installed. I’ve seen plenty of these systems go sideways when it drops below zero, even with insulation. City water’s not perfect, but the redundancy and oversight are hard to match with DIY setups. Sometimes the fix is a lot more than just draining a line.

I get where you’re coming from - nothing like a frozen pipe at 2am to make you question your life choices. I tried to set up a greywater system in my old place, thinking I’d be saving the planet and my wallet. Turns out, I mostly saved myself from having free weekends for a year. The maintenance was a pain, and the first winter, the lines froze solid even though I thought I’d insulated everything. Ended up showering at the gym for a week while I figured it out.

City water’s definitely not perfect (I still remember that boil notice last summer), but at least when something goes wrong, you can call someone who actually knows what they’re doing. With DIY setups, it’s all on you - and if you mess up, you’re the one melting snow in your bathtub. Not exactly the rustic adventure I had in mind.

That said, I do like the idea of using rainwater for toilets. Seems like a waste to flush with perfectly good drinking water. But yeah, the devil’s in the details...and the details are usually hiding behind drywall or under the crawlspace, waiting to bite you when it’s -10 outside.

If someone figures out a foolproof way to keep these systems running in winter without turning your basement into an ice rink, I’m all ears. Until then, I’ll stick with city water and cross my fingers that the main doesn’t burst again this year.

Honestly, I think you nailed the reality of these setups - everyone loves the idea until they’re crawling under the house with a heat gun at midnight. Still, I have to give you credit for actually trying it. Most folks just talk about “going green” and never touch a wrench. Maybe one day someone will crack the code on freeze-proof systems, but until then, I’m with you: city water’s not perfect, but at least it’s predictable... most of the time.

I hear you on the “predictable” part - city water’s not perfect, but at least you know what you’re getting. I tried a greywater system for my garden last year, and honestly, it was more work than I expected. Pipes froze, filters clogged, and I started wondering if I was actually saving water or just creating more headaches. Has anyone found a setup that doesn’t turn into a maintenance nightmare once winter hits? I want to believe it’s possible, but I’m not convinced yet.

Yeah, I hear you - greywater setups sound great on paper, but once winter rolls in, it’s a whole different beast. I’ve seen way too many folks underestimate how fast those pipes freeze up, especially if they’re not buried deep or insulated right. Honestly, unless you’re ready to baby the system and do regular checks, it can turn into a headache. Some people swear by heat tape and insulated boxes for exposed lines, but even then, you’re trading water savings for higher electric bills or more maintenance. Personally, I stick with city water in the cold months and only mess with greywater when it’s warm out. Just seems less hassle overall.

Honestly, unless you’re ready to baby the system and do regular checks, it can turn into a headache.

Yeah, that’s what worries me. I geeked out over the idea of greywater showers, but then I started reading about all the winterizing steps... and honestly, I barely remember to salt the driveway. Heat tape sounds cool until you see the electric bill. Maybe I’ll just stick to the basics for now and revisit when I’m less likely to freeze my pipes (and my sanity).

Honestly, I hear you about the winterizing - it can get tedious fast. But if you’re still tempted by greywater setups down the line, there are a few ways to keep things simple. For example, some folks use insulated pipe covers or bury lines deeper to cut down on freeze risk, so you don’t have to rely just on heat tape. Maintenance-wise, a monthly check is usually enough unless it’s a crazy cold snap. It’s definitely not for everyone, though... One winter I forgot to drain an outdoor line and paid for it with a split pipe and a soggy crawlspace. Not fun, but lesson learned. Sometimes sticking with the basics is just plain practical.