The two flow meters at the city’s water treatment plant are being replaced on Tuesday 12 and Friday 15 February. The flow meters are being replaced after 40 years service and are vital in measuring water flow to the east and west of the city through the plant’s two key water-pipes.
The work will be done overnight to minimise any possible effects on water users. While little impact is expected, there could be reduced water flow and pressure, and water may look cloudy or discoloured from the evening of 12 February through to the middle of the day on 16 February. There will be no interruption to water supply.
If you do experience discoloured or cloudy water from pipe sediment being stirred, run your outside cold tap for ten minutes until the water clears. And please be a smart water user and connect up a hose and water the garden at the same time.
Here’s some answers to questions you may have:
- What is the work being done?
We’re replacing the two flow meters that measure the volume of water from the water treatment plant to Hamilton city.
- Why is this work being done, and why now?
After 40 years the meters are due for replacement and this work is also important for other essential water supply projects.
- How likely am I to notice a change to my water?
You may notice reduced pressure during the time the work is being carried out and potential for cloudy or discoloured water for a short time following completion of the work. It is also possible you may not notice anything different with your water supply.
- How different might my water look?
The water may appear cloudy or discoloured. If this occurs run your outside tap for around 10 minutes to help relieve any air/discolouration. As we are currently on water restrictions, where ever possible please attach your garden hose and use this water for the garden. If the water has not returned to normal after that please contact Council on 838 6999.
- Will it taste different?
There may be a slight change in taste however the water will still be safe to drink.
- Is it still ok to drink when it looks different?
Yes, but it is recommended to run your outside tap for around 10 minutes to help relieve any air/discolouration. As we are currently on water restrictions, where ever possible please attach your garden hose and use this water for your gardens. If the water has not returned to normal after that please contact Council on 838 6999.
- Why might my water look different?
One of the two bulk main pipes distributing water around the city will be shut for several hours, meaning only one bulk main pipe will be supplying water to city residents for a period of time. To minimise any potential effects, these works are being done at night when there is a lower demand for water. There is a possibility that air may become trapped in pipes during the work and this could result in the water appearing cloudy. Discolouration of the water may also occur due to the change of direction in which the water is being moved around the city, which can stir up material that accumulates over time in the water mains. We recommend that if you experience any discolouration or cloudiness in your water to run your outside tap for around 10 minutes to help relieve any air/discolouration. As we are currently on water restrictions, where ever possible please attach your garden hose and use this water in your gardens. If the water has not returned to normal after this please contact Council on 838 6999.
- Can I still do washing?
If brown water is present, it is advisable not to wash laundry.
- Is it ok to have a bath or shower if the water looks cloudy or discoloured?
Yes, however we recommend that you run your outside tap until the appearance of the water returns to normal.
- Will the water supply stop at any point?
We are replacing one flow meter at a time, so a supply of water should always be available, although potentially at reduced pressure. If at any time you lose supply during the period of works, please let us know by contacting us on 838 6999.
- How often is this sort of work done?
Scheduled routine maintenance and renewal works are undertaken regularly on different parts of our water supply throughout the year, with minimal if any impact on customers. Work on our bulk main water pipes that are responsible for water travelling around the city is less common, however because of this as well as the potential effects on a large number of people we complete in-depth planning to where ever possible minimise any impacts on our customers. In this particular case the flow meters that are being replaced have an expected life of 20 years.
- How much is this work costing?
- What if it the work takes longer than planned?
A considerable amount of time and effort has gone into the planning of this work and contingencies have been put in place to avoid this.