What causes the chlorine taste and tips on how to reduce the effect
Initially when water supplies are chlorinated you will notice a stronger smell and taste although this should reduce over time.
Council contractors are flushing pipes in areas most affected by the smell and taste of chlorine.
The pipe flushing is one of a range of options to help reduce the smell and taste issues people are experiencing. Staff are also working with the appropriate health authorities to explore how we can reduce the amount of chlorine being added into the water supply.
When we dosed after the earthquakes, we did notice higher levels of taste and smell at the beginning of the chlorination. That was due to the oxidation of the biofilms and organic matter through the system. The taste and smell did improve over time and we expect that to happen this time too.
There are 53 pump stations across the city. While you will be primarily supplied by one pump station, if you are midway between pump stations, sometimes you may be getting the water from one pump station and sometimes the other. The level of chlorine in those pump stations may be different. If you live close to the pump station, the chlorine dose you get coming out of your kitchen tap will be higher than if you live much further away.
If you are concerned about the taste, you can keep drinking water in an open jug in the fridge. The chlorine taste will dissipate naturally over a few hours.
Chlorine and any associated by-products can removed by using a granulated, activated carbon (GAC) filter. These are available from hardware supplies stores and water filter companies.