Families have seen their homes flooded with foul-smelling filthy water after the local sewage system buckled under the pressure of Storm Dennis.
Residents in the village of Three Mile Cross, near Reading, have had to throw out their children's toys after they became contaminated by the waste.
Thames Water has apologised over the blunder, blaming it the 'enormous pressure' caused by Storm Ciara and Dennis.
Greg Fenko, a dad with two young children, told BerkshireLive: "I'd not be that bothered if it was just floodwater.
"But it's not, it's sewage.
"It means my kids can't go outside, and it means we're going to have to throw out of their toys because they're contaminated.
"We don't feel enough is being done to improve the infrastructure.
"Thames Water staff told us this will keep happening unless the infrastructure is improved."
He has made a formal complaint to the company, describing the situation as "appalling".
The letter adds: "We suffer year on year sewage floods. Enough is enough.
"My two and three-year-old daughters last summer were not able to play out in the garden due to your sewage pump not being fit for purpose."
Another resident, Frances Lancaster, 31 - who has two young children including a two week old baby - experienced a flooded garden.
She said: "It was certainly surreal to see the children's paddling pool floating around the garden.
"We've not been outside since, I'm terrified to think what it smells like.
"With two very young children, it's difficult.
"My oldest loves going in the garden, he's a real outdoors type.
"The paddling pool will almost certainly have to be thrown out now.
"The main worry you have now is that it'll just happen all the time."
Gill Browning is 76, and has lived in the road since 1975.
She said there were never problems with flooding until a huge housing estate was built on the other side of the road.
Another big housing development is being constructed behind the homes, and Gill fears more problems.
She said: "We've had this three times since Christmas.
"Before that? Once in 2016, but before that we never had problems.
"The developers were warned that land floods.
"They put a load of concrete into ground and now that water comes up into our gardens.
"We've got more houses behind us, and that little pumping station can't cope.
"I've got toys out there for my great grandchildren - they're now contaminated and have to be thrown out.
"We also lost a huge crop of apples in 2016 are they were deemed to be contaminated."
A Thames Water spokesperson said: “We’re sorry that we’ve not been able to visit some of our customers as quickly as they and we would normally expect.
"The two recent storms have put enormous pressure on our sewers, pumping stations and treatment sites and although we’ve had extra teams out supporting affected customers, it’s taking longer than usual for us to get to everyone.
An engineer was due to visit Three Mile Cross on February 21.
The spokesperson added: “We believe the cause of the flooding is not related to the new pumping station but instead a redundant pipe, and as soon as water levels recede, we’ll be carrying out further investigations and working on a permanent solution.”
