ᐅ First water from the tap is stagnant and contains limescale.
Created on: 15 Jan 2024 07:31
U
Ubibubi
Hello everyone,
We have been living in our newly built house for a few months now and have noticed that the first cold water in the morning from any tap (whether in the kitchen or bathrooms on the ground or upper floor) always tastes very stale and has a strong presence of limescale, despite having a water softener installed. When I let the first 300-400 ml (10–14 fl oz) run, the taste normalizes and the limescale content gradually decreases. I wonder if this is normal due to the standing water in the pipes overnight or if there is something wrong with the plumbing installation. The water hardness test kits also recommend letting the water run for a minute before testing. However, in daily life, this is not very practical and leads to considerable water waste. My expectation would actually be water quality similar to sparkling water and a normal taste right away. What do you think could be the cause?
By the way, the water softener installed is a BWT Perla One. We also have a Conel CLEAR 2.0 backwash filter. Activating the filter freshly does not seem to affect the issue described above. We also use a Grundfos Comfort PM recirculation pump, which runs once a day for a few minutes. The domestic hot water storage tank is a WAS ECO 165 l (44 US gallons), integrated with our Weishaupt LS8-B heat pump.
Thanks in advance for your opinions!
We have been living in our newly built house for a few months now and have noticed that the first cold water in the morning from any tap (whether in the kitchen or bathrooms on the ground or upper floor) always tastes very stale and has a strong presence of limescale, despite having a water softener installed. When I let the first 300-400 ml (10–14 fl oz) run, the taste normalizes and the limescale content gradually decreases. I wonder if this is normal due to the standing water in the pipes overnight or if there is something wrong with the plumbing installation. The water hardness test kits also recommend letting the water run for a minute before testing. However, in daily life, this is not very practical and leads to considerable water waste. My expectation would actually be water quality similar to sparkling water and a normal taste right away. What do you think could be the cause?
By the way, the water softener installed is a BWT Perla One. We also have a Conel CLEAR 2.0 backwash filter. Activating the filter freshly does not seem to affect the issue described above. We also use a Grundfos Comfort PM recirculation pump, which runs once a day for a few minutes. The domestic hot water storage tank is a WAS ECO 165 l (44 US gallons), integrated with our Weishaupt LS8-B heat pump.
Thanks in advance for your opinions!
In der Ruine schrieb:
I could imagine that even with softened water, some scale might still build up in the pipe or faucet. That could also be a possibility. The question would then be whether it decreases over time.
Tolentino schrieb:
I can't explain this effect. I also can't think of any "error" in the installation that would cause something like this. Is the value then as high as the untreated water before the water softener? Or is the value somewhere in between? Somewhere in between: the inlet value is 12° (water hardness), the target value is 4°, and the value of the first water is around 7-8°.