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Hi all, The plumber came back, did a thorough flush of the house (did not do that the first time) - this involved taking off all the aerators, mixer valve in the basement, filter off of the tankless hot water heater, hooking up hoses to flush them outside the house. Of course there were those...

Hi KULTULZ, yeah he didn't flush it, I guess that was an exercise left to us. We've been running the tubs for 30 minutes at a time, over a few days - not sure if that qualifies. Yeah I saw that about the pressure + rupturing - I know there is a lot of pressure in the system (the multiple...

Hi all, Hope you didn't miss me too much. So it's been two weeks since the thermal expansion tank was replaced, and we're starting to get flakes, again. Definitely less than before. These flakes are dark black and smear when you rub them together (pretty much like o-ring material). Is it...

Thank you.

Hi, I'm trying to install a reverse osmosis kit, specifically the drain pipe part. The old kit already has a 3/8" draining outlet installed. The outlet is a quick connect. It used to have a 3/8" plastic pipe running into it. The new kit has a 1/4" plastic drain pipe. I wanted to leave the...

The tank was mounted top up (judging by the text written on the tank, it was "normally" oriented).

Well finally we found a plumber that had the simple idea of replacing the expansion tank. He took it off, and emptied it into a bucket. Photos attached. There's all of our black flakes. I've contacted the manufacturer to ask what the flakes are made of, as I'm pretty terrified that these have...

Hi, thanks - what are the "fittings"? Is that the solder between joints, or something else? Let's say lead did come back positive - would plumbers these days do a pipe replacement job in copper like this? Or does everyone do PEX now? I want to do copper is possible. We are in Connecticut...

Hi, I'm looking to buy a house built in 1953. It has copper piping. On the property disclosure form, the owner marked "unknown" for "lead used in plumbing". I assume the potential for lead would be in the solder? I snagged a water sample from the house, and got a negative result for lead...

Ok someone is coming with a camera on a wire, they're going to run it down the pipes to check for corrosion. Sounds lovely! Maybe we'll get some answers.

Hi all, thanks a lot for the replies, that is a huge help. @Kultulz, about the CPVC leaching - I started looking it up after a friend from California told me they were trying to ban its use there - I really have no idea if this is legit or not...

Ah bummer - I see all these articles about CPVC leaching etc - I guess all pipes leach, depends if you want copper leached or the plastic stuff leached. Thanks

Hi all, I'm looking to rent an apartment that was built in 2007. I took a look under the kitchen sink, and it looks like the incoming water pipes there are copper. I went into the basement, and saw the pipes coming off of the hot water tank are a rigid, beige plastic. Picture is attached. I'm...

Hi all, here are answers to the last few posts: @speedbump: the water is from the city, we have a whole-house filter on the incoming water line, nothing being caught there. There's also a filter on the incoming tankless water pipe, nothing caught there either. @djmayhill: the basement is...

Hi all, Finally have some more updates. I found a lab that was able to test the flakes, and they said they were copper. We had the hot water heater replaced because the heat exchange is made of copper, and has leaked before. After the replacement was completed, we're still getting the flakes...

I can't see any SS lines anywhere where the piping is exposed in the basement. It's all copper. I'll try to find out if there are any elsewhere. I snapped a higher res picture of the flakes, surprisingly they came out a bit green/blue here. These flakes are sitting on a paper towel. They're...

Yeah we're on city water, the city water test showed Chlorine in an ok range (I think): Reference Range: 0.05 - 2.0 mg/L Result: 0.63 mg/L Our water hardness came back as "moderately hard": Reference Range: 30 - 100 mg/L Result: 67 mg/L I found a page on the water...

Hi all, here's an update. The city water department came to do a test, everything was reported OK so far. They haven't done the lead or copper test, yet, but the 2 home kits we bought didn't show any, so the city test will probably come back negative on those, too. We put in a whole-house...

Ok great, thanks for the info. As I kept searching around today, another idea came to mind - it could be "scale" from our tankless hot water system. We have a Noritz brand, gave them a call and they said that darkish/black particles of this sort are a possibility, and that we should get a...

Ok, do you have any recommendations for full water tests? There are so many out there. The city just drew a sample to do whatever tests they deem important, but an independent test would make me feel better. I snapped two photos of the particles. It's hard to get a good picture of them. The...