TOURISTS have been left disgusted after the largest family beach of Menorca was left swamped by stinking “human faeces” yards from sunbathers. Beachgoers have described how a pool of water apparently containing excrement has caused havoc on El Prat de Son Bou beach, a modern resort of the popular Balearic island. Getty - ContributorSon Bou is the biggest and family beach of Menorca[/caption] “It smells like a nitrogenous product, there is bacteriological decomposition,” Rafael Cerezo, a resident of Torre-solí for 30 years and regular beachgoer, said. Following Cerezo’s complaint to the City Council, he said the Council cleaned the pool, but it filled up again. Cerezo said he believes a malfunctioning sewage plant is behind the foul re-felling waste pool. The plant is used to treat all sewage from the area, but given the high level of tourism occupation this summer, the flow has increased, he said. READ MORE IN HOLIDAY NEWS WAIT IT OUT Worst UK airport for flight delays revealed PASSPORT PANIC New warning over 'ruse' used by desperate travellers to avoid passport delay “Either the sewage treatment plant that discharges into El Prat [Son Bou beach] is insufficient or it doesn’t work well, or it’s broken,” he added. “It is a problem that I have seen in past years, but never like so far with so much organic matter.” The City Council, meanwhile, rejected claims the pool was filled with human faeces, instead saying the foul small was due to stagnant water. “The treatment plans discharge the treated water, we are not aware that there is contamination,” Cristóbal Marqués, Councillor for Urban Planning and Finance of Alaior, told Menorca Info. The Municipality’s beach coordinator said he inspected the area after the complaint before concluding the pool was full of mud. “We are the first interested in the cleanliness and health of the beach,” Marqués said. Most read in News BIG FAT GYPSY RAID Riot cops storm travellers' camp after caravans force school to SHUT RISH LIST Rishi Sunak leads Tory leader race as he SMASHES threshold THE HEAT IS ON Scorching 33C heatwave to last EIGHT more days before ending with a bang TRAGIC LOSS Netflix star dies age 36 at home as mystery surrounds her sudden death HOTTING UP Brits bask in 32C scorcher making UK hotter then HAWAII STABBING HORROR Woman 'killed partner after he choked her unconscious in rape-like sex' The Councillor admitted bad smells emanate from the area but attributed those to a nearby pumping station, located in the beach car park. This comes as Brits have been warned they could be slapped with a £130 fine on their next holiday in Spain for simply building a sandcastle. The rule came into effect following a 2016 Benidorm Town Hall vote to ban sand structures on Levante beach, The Daily Telegraph reported. It is also not allowed in Arona and Arica in Tenerife. It isn’t the only law you could be breaking while on holiday in Spain. Read More on The Sun DOG'S LIFE Ladbaby shares B&M buy that keeps you cold as you sleep during the heatwave COLOUR CHART I’m a doctor - here’s why your pee should NEVER be clear and when to worry Several Spanish tourist hotspots, including Barcelona and the Canary Islands, ban smoking on the beach, with fines up to £1,700. Wearing your swimwear off the beach also could see you paying out in Spain.