The fight against fatbergs has received a major boost with the publication of a new official standard identifying which wet wipes can be flushed down toilets safely.
Manufacturers of wipes will be able to feature an official water industry ‘Fine to Flush’ symbol on their packaging if they pass strict scientific tests. This symbol will let consumers know that the products don’t contain plastic and will break down in the sewer system instead of clogging up sewers and contributing to fatbergs which cause blockages and sewage overflows.
Fatbergs – mainly caused by a build-up of wet wipes, fats, oils and grease into a solid mass – have been increasing in frequency in recent years. These include a 250-metre long fatberg in Whitechapel in London in 2017 which weighed as much as nineteen elephants, and a 64-metre fatberg which was discovered blocking a sewer in Sidmouth, Devon.
In 2017 the biggest ever in-depth investigation of sewer blockages in the UK proved that wipes being flushed down toilets caused serious problems in the sewerage system. The project found that non-flushable wet wipes could make up around 93% of the material causing some sewer blockages. These wipes – which included a high proportion of baby wipes – are not designed to be flushed.
Commenting on the new ‘Fine to Flush’ standard Water UK Chief Executive Michael Roberts said:
“This is an important step in the battle against blockages. We’ve all seen the impact of fatbergs recently, and we want to see fewer of them. Improving the environment is at the core of what the water industry does, and the new ‘Fine to Flush’ standard that we’ve created will make it easier for consumers to buy an environmentally-friendly product instead of one which clogs up drains and sewers.”
Manufacturers can have their wipes tested by WRc, the Swindon-based independent technical experts who developed the specifications for flushability standards in conjunction with Water UK. If they pass the tests, the wipes manufacturers will receive the ‘Fine to Flush’ symbol from WRc.
Although there has been an increase in products being labelled ‘Do Not Flush’, there are many wipes on the market labelled ‘Flushable’ which do not break down quickly when they enter the sewer system, and which would not pass the stringent tests which meet the standard to receive the ‘Fine to Flush’ symbol. The labelling of these products can cause confusion amongst consumers, increasing the problem of sewer blockages.
There are approximately 300,000 sewer blockages annually, costing the country £100M. Thousands of properties suffer sewer flooding caused by these blockages every year in the UK, creating misery for homeowners and businesses and leading to high clean-up bills and increased insurance costs. Sewer flooding also has a major impact on the environment.
The technical name for ‘Fine to Flush’ is Water Industry Specification (WIS) 4-02-06, and the full details of the specification are in the guidance section on this website.
Manufacturers and product developers can contact WRc for further information and to discuss the most appropriate approaches to testing products.