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This is a cold water tank. We would recommend to the owner that this tank is insulated, which will help ensure the water stays cool especially in warmer months.
Here we have a TMV (Thermostatic Mixing Valve). When we have a TMV we look to see the hot water is reaching 39-43 degrees.
Cold water tanks should be drained & cleaned at regular intervals, to help ensure debris etc. is cleared out.
Cold water tanks should be drained & cleaned at regular intervals, to help ensure debris etc. is cleared out.
Any showers/spray/taps/hose pipes should be flushed through weekly. Shower heads and other outlets should be de-scaled at least every 3-6 months.
Ensure the boiler/water heater is set to 60°C so that water reaches outlets at above 50°C. Ensure cold water does not exceed 20°C by making sure pipes & storage tanks are insulated.
You can see in this tank that a clean may be due. There is debris/sediment sitting at the bottom of the tank.
We look to see that hot water cylinders are set to 60+ degrees. This helps ensure the water reaching outlets is 50+ degrees.
Here we have a photo of a 'blind end'. Any blind ends in pipework should be removed to ensure water cannot stagnate in the water system.
The insulating jacket has fallen of this cold water tank. As the tank is on the roof, it is prone to warming up during the warmer months. The insulation should cover the whole tank.
These tanks serve a block of flats in London, W3. We would recommend these are insulated, to help ensure the water stays cool during the warmer months.
This tank was heavily compromised. The DIY lid had rotten and parts had fallen into the tank. Years or debris, sediment and scale had built up.
This cold water tank has a lot of scale built up. This can be drained, descaled/cleaned and then refilled.
This cold water tank has some sediment at the bottom.
This cold water tank had been covered with a plastic sheet, as appose to using a tight fitting lid. There should be a tight fitting lid on the tank, which will help stop debris/rodents etc. enter.
Shower heads should be descaled every few months as a minimum.
This is an example of what a good cold water tank looks like from the inside. There is very little debris/scale.
When we arrived to inspect these tanks, the service hatches had been removed and not put back. These should be left on at all times.
We look to see a hot water reading of at least 50 degrees from outlets.
This spray tap is heavily scaled. Small amounts of water can get trapped in the scale, and grow bacteria if untreated.