Two years ago, Peter Evans bought the land directly behind his house to stop developers from building there and blocking his view of the beautiful Brecon Beacons .
However, little did he know that a faulty pipe would give him bigger problems by turning his garden into a wasteland filled with human faeces, condoms and soiled sanitary towels whenever heavy rain occured.
In fact, anything that people were flushing away could end up in Mr Evans' garden.
Mr Evans, 58, who lives with his wife and two children in Coelbren, Powys , claimed the the problem had been ongoing for the past two years and he had reported it to Welsh Water more than 30 times.
"It's just disgusting, anything people are throwing down the toilet could end up in the garden. We've phoned Welsh Water who come out and rake up the sanitary towels, wet wipes and condoms, but the problem is never fixed," said Mr Evans.
"Whenever it is really heavy rain the whole garden is just full of human faeces," he adds.
The problem, which is supposedly related to an issue with a faulty pipe in the area, has also caused a rotten stench that locals have been complaining about for years.
"We can't open the back window, it is absolutely horrible and in the summer, when the weather is hot, it's unbearable. Both of our neighbours have also been complaining about the smell, it makes us feel sick," added the 58-year-old who has been living in the property since 2003.
The disgusting mess has also been attracting scavenger birds and crows which have been picking at the waste and dropping it all over the family's garden, including in their garden pond - the family have been forced to cover the pond with a net to protect their pet fish.
"It's affected us massively as a family. My daughter is football crazy and can't even go outside to kick the ball around. My little niece wants to go outside and play in the garden but she can't, we're just at the end of our tether and nothing is being done about it.
"We've spoken to Natural Resources Wales and the environmental health but they say that it isn't a health hazard. Every time we go on holiday now it builds up if it's been raining and it's just a mess," added the dad of two.
A Welsh Water spokesperson said: “We are aware of issues regarding external sewer flooding at Mr Evans’ property in Neath, and have undertaken a number of investigations to identify the cause and possible solutions. This is primarily due to capacity issues in parts of the network near the property.
“We will shortly be carrying out CCTV surveys of the sewer network around the property to pinpoint where the network needs more capacity and how we can remedy this. We are also looking into managing our network so we can relieve the pressure at certain points, to ensure the land is better protected.
“We are very sorry for the inconvenience and distress this is causing and are committed to developing a permanent solution to this issue and working with Mr Evans to achieve this.”
