A property expert says there should be improvements to water supply if Cambs is to cope with more housing.
Fiona Cannon from Strutt and Parker's Cambridge office is calling for water companies to substantially invest in the county's water supply.
Ms Cannon said new reservoirs are needed and a thorough overhaul of the piping system to minimise leaks.
A spokeswoman for Anglian Water said they have been planning for increases in population.
She said: "Managing water resources is not just about planning for one year ahead, we are planning over the next 20 to 30 years. We will be making the necessary investment to meet demand."
Ms Cannon said that if the investment does not come, it will be impossible to supply the water for the tens of thousands of planned new homes over the next few years.
If the homes are not built, Ms Cannon said the result would be a problem for the less well-off, key workers, and those trying to get a foot on the property ladder, because the county's property prices will continue to rise.