Veterinary Products in Waterways

Motion made, and Question proposed, That this House do now adjourn.—(Gen Kitchen.)

20:01:00

I am delighted to secure my first Adjournment debate, and for it to be about veterinary products in waterways, specifically neonicotinoids such as fipronil and imidacloprid. From now on, for your sake and mine, Madam Deputy Speaker, I shall be referring to these neonicotinoids as neonics. I have been extremely keen to secure a debate on this matter for some time now, having had it raised with me before the general election by a constituent, Ueli Zellweger, who is a vet. It is high time that we gave this topic the scrutiny that it so desperately needs. We are a nation of pet lovers. It is estimated that there are around 25 million cats and dogs in the UK. I speak as a doting dog and cat owner myself and I know that our furry friends are an integral part of millions of British families. And so when fleas and ticks come biting, bringing discomfort and annoyance to our beloved pets, we of course want to act swiftly and efficiently to alleviate their suffering. Flea treatment products containing fipronil and imidacloprid are seen as a highly convenient and effective way of dealing with the problems caused by fleas and ticks. In the UK, Imperial College London claims that fipronil is an ingredient in 396 different pet anti-flea and tick treatments, with imidacloprid authorised in some 138 veterinary products. However, this convenience comes at a cost to our waterways and associated ecosystems. Popular though these products are, safe they are not. These two ingredients are extremely toxic. They are very powerful killers indeed and the picture is not pretty. In fact, so powerful are these chemicals that just one drop of fipronil has the potency to wipe out 30,000 bees as well as causing serious neurological damage and hampering the mobility of thousands upon thousands more. As well as this, according to extensive research conducted by Imperial College London, one monthly flea treatment for a large dog contains enough imidacloprid to kill a staggering 25 million bees. The decline in pollinator populations, which in part can be attributed to the use of imidacloprid, threatens agricultural productivity and has very serious long-term implications for our national food security. This is not simply a mere triviality to be neglected. Authorities have recognised the toxicity levels and the hideous harm that these chemicals can cause on the natural world. Since 2017, fipronil has been banned in agricultural use, and imidacloprid has been banned since 2018. But given the unregulated nature of these chemicals in relation to flea products, we are allowing these products into our environment through the back door, and our aquatic and nearby ecosystems are paying the price. There is not just one route for these neonics to enter our British waterways. It is important to be aware of all the various pathways towards this pollution. The most obvious, and most direct, is simply the contact of pets with water bodies themselves. If a dog goes swimming in a river after receiving their course of treatment, the product is then introduced into the waterways, allowing it to enter our rivers, lakes and streams and go wherever the water takes it, wreaking havoc as it travels. Dissemination can also occur because of rainwater run-off, with residual product washing off from treated animals into drainage systems and ending up in our waterways. Equally, the washing of pet bedding and even pet owners’ hands are thought to be common ways in which these dangerous products enter our waterways. There are some less direct pathways that still pose a problem—and at this point I must apologise to those currently eating their supper. These products are generally harmless to our dogs and cats, but they can be absorbed by our four-legged friends. Once absorbed, the products can be excreted, and even when responsible owners clean up after their pets—something that is not universal, unfortunately—the traces of fipronil and imidacloprid left behind can still prove incredibly damaging once washed into our waterways. Studies have revealed that imidacloprid is one of the most frequently detected pesticides in dogs’ urine, but the level is still comparatively low, with the National Office of Animal Health finding that only around 11% of topically applied fipronil is systematically absorbed. The shedding of treated hair or skin can also lead to a pathway being created. Once these products are in our waterways, not only are they utterly deadly for the thousands of native aquatic organisms in the UK, but they are highly toxic to sea and freshwater fish. Even at low concentrations, fipronil can be disruptive to aquatic life cycles. River sample data gathered by the UK Environment Agency over the course of a two-year period between 2016 and 2018 from 20 different waterways in England discovered fipronil residue in 98% of freshwater samples and traces of imidacloprid in 66% of all samples. Beyond the effect on our waterways, other studies have found fipronil to be incredibly toxic to birds. It brings me no joy to report that this is not just an aquatic problem. Indeed, through a process of collecting 103 different bird nests, researchers found that every single one without exception contained fipronil, and an overwhelming majority had significant remnants of imidacloprid. The truth is that the decline in aquatic insects that emanates from the flowing of these products in our waterways affects fish populations, who rely on these insects as a primary food source. This in turn impacts bird species that prey on fish, producing a dangerous snowball effect that reverberates throughout the ecosystem. This deterioration of biodiversity greatly diminishes the overall resilience of our ecosystems, exposing a vulnerability to factors of climate change and invasive species. One of the most troubling aspects of the likes of fipronil and imidacloprid is their persistence in the environment. The chemicals disintegrate slowly and can remain in soils and waterways for extensive periods of time. In the case of imidacloprid, scientists say that the residual effect lasts in soil for months, sometimes even years, and the breakdown product of these chemicals is understood to be even more toxic than the parent compound.

Does the hon. Member agree that some pet owners may not be aware of how bad this issue is, and so packaging, usage guidance and point-of-sale advice for pet treatments should give some warning of the danger that the product could affect aquatic life if it ever entered watercourses?

I am coming on to that later, but the hon. Member is absolutely right. It is also important to note that the economic costs of mitigating the environmental and health impacts of these chemicals are substantial.

Would the hon. Lady give way?

With pleasure—and happy birthday.

I commend the hon. Lady on bringing this issue forward. She is right to outline the problems with fipronil and what it can do to our water, but there are many other things that can affect water. Northern Ireland Water goes around all the farms providing a free service collecting herbicides, weed killer, sheep dip, insecticide sprays, rodenticides, fungicide sprays, veterinary medicines and empty containers. Take all those things out of the country and away from the waterways and we can make our water cleaner. This issue is not just about the specific chemicals that the hon. Lady mentions; there are many other things that need to be removed as well. Does she agree with that?

I thank the hon. Member for his interesting intervention. I agree, and I will talk about farmers in particular in a moment. It is also important to note that the economic cost of mitigating the environmental and health impacts of these chemicals is substantial. Water bills are set to rise precipitously this year, causing pain to the average consumer. In Tiverton and Minehead, rises of 20% and 32% have been announced by the two water companies that supply us. Purifying contaminated waterways and restoring the ecosystems blighted by those chemicals requires significant financial resources, placing a burden on communities and straining local government purses. How much of that financial impact is reflected in these bill rises? Are consumers facing price rises in their water bills because we are not effectively regulating problem products such as neonics? We know that there is an issue with our water quality—the issues at Dunster beach and Blue Anchor in my constituency spring to mind. That is why the Government passed the Water (Special Measures) Act 2025—and why my party leader fell into Windermere several times during the general election campaign to raise awareness. When will we clean up our act and put in place the firmest restrictions on these polluting water companies? When will we look at what we can do to stop other pollutants from getting anywhere near our waterways in the first place? I will be interested to hear from the Minister whether this cost has been factored into the Government’s thinking on this issue, and whether there could be some answers to the questions I have posed. On a broader note, I will touch on how we can help our farmers and those in our rural communities with these environmental challenges. Our waterways make up a key part of our natural biodiversity, but each part relies on the other. That makes the recent decision to axe the sustainable farming incentive scheme all the more worrying and damaging to our rural communities. If there is not the money for sustainable farming, agricultural practices will naturally follow economic sense, if not the careful environmental custodianship on which our farmers pride themselves. Farmers are suffering at the hands of this Government, and with them so suffers our environment. Will the Minister take this opportunity to reassure the House that her colleagues in the Department for Environment, Food and Rural Affairs are doing everything they can to support our farmers as they balance the agricultural and environmental needs of the land? Will she also ensure that due consideration is given to the restoration of the SFI scheme, so that we can keep making progress on our environmental goals, hand in hand with farmers, and not be distracted from the harms of damaging products such as the neonics that I have been talking about by losing our much needed local and rural allies? I am aware that this speech has been slightly doom and gloom, but I will now turn to what we can do as an alternative. Research has shown that the likes of coconut oil, citronella oil, good old lavender and eucalyptus provide good natural and, most importantly, non-toxic alternatives for flea and tick repellents. The market is awash with collars for cats and dogs infused with these essential oils, which are both practical and natural. There has been very little emphasis on these solutions. We should be doing much more to promote the benefits of these chemical-free remedies. As seen in recent developments in Switzerland, where the Government are carrying out water testing, there is a clear need for environmental impact assessments of the use of fipronil and imidacloprid. These should be launched as a matter of urgency, and I would welcome the Minister’s reflections on this point. We Liberal Democrats have called for any emergency authorisations of neonics to be revoked, and for the introduction of tighter restrictions on their use. I invite the Minister to comment on the state of play and whether there is a serious appetite in the Government to address this issue. It is clear that we have a serious challenge on our hands. As the hon. Member for Truro and Falmouth (Jayne Kirkham) said, these products are advertised widely and sold ubiquitously. I am not blind to the fact that these products have brought undeniable benefits in pest control, but their unintended consequences serve as a stark reminder of the need for sustainable and nature-friendly practices. I genuinely believe that there is a desire to do more to regulate these highly toxic chemicals. Lawmakers were right to impose a blanket ban on fipronil and imidacloprid in agricultural settings in 2017 and 2018. The will should be there to ensure that these products cannot be allowed to continue damaging our freshwater ecosystems. Further regulation is the only way forward to remove harmful contaminants and arrest the degradation of aquatic fauna in this country’s waterways. The Government also need to go further and faster in regulating our waterways and the water companies damaging them overall. The Water (Special Measures) Act is a good first step, but the Government can and must do more. Ofwat is failing in its duties. The time has come for a new clean water authority to replace it as we up our game in protecting our precious waterways. I see no reason why reforms designed to keep neonics out of our waterways cannot come hand in hand with our push to keep sewage and other contaminants and pollutants out of our waterways. In the short term, for neonics, restrictions should be placed on the trade of fipronil and imidacloprid, with the only exception to their continued use coming under strict conditions of prescription only by veterinary medical professionals and for a limited time period. We know that Amazon and the over-the-counter market in pet stores can lead to the propagation of those products in our natural environment, so restrictions would make some sense. When the time allows, a ban for all other usage should certainly be in the Government’s scope. It is clear that decisive action must be taken on this matter. Could the Minister shed some light on whether the Government would be willing to assess the potential merits of moving in that direction? From all that I have seen, that appears the prudent—and perhaps only—direction to take.

20:15:00

It is, as always, a pleasure to see you in the Chair, Madam Deputy Speaker. I congratulate the hon. Member for Tiverton and Minehead (Rachel Gilmour) on securing the debate, and I especially congratulate her on her first Adjournment debate in the House. I am sure that it will be the first of many—and probably the first of many regarding water, so we might get used to seeing each other on such evenings. Obviously, we cannot miss the opportunity to congratulate the hon. Member for Strangford (Jim Shannon) on his birthday. I am sure that I speak for the entire House when I say that I hope he has had a wonderful day. An Adjournment debate would not be the same without him, so I thank him for joining us, even on his birthday. I know that the Government have carried out monitoring in the Tiverton and Minehead area to deliver programmes such as updating the water framework directive status, natural capital ecosystems assessment and catchment sensitive farming. As hon. Members know, the quality of our rivers, lakes and seas is essential for supporting our ecosystems, providing clean water and producing our food. Our beautiful rivers, lakes, seas and beaches are a source of pride for our communities, and we want to restore them to that end. I totally agree that we are a nation of pet lovers. Again, I have to mention my three wonderful cats— I never miss the opportunity to mention them—who are Meglatron, Lily and Serena. Serena was given that name because she is such a beautifully serene lady, and Meglatron because he is a crazy little boy we have running around the house all the time. The hon. Lady is quite right, and I am sure that the concerns about fleas and ticks are felt by many pet owners up and down the country. On our wider neonics work, on 21 March—just four days ago—we released the national action plan on pesticides. It has three objectives: to encourage the take-up of integrated pest management; to establish a timeline and targets for the reduction of the use of pesticides; and to strengthen compliance, to ensure safety and better environmental outcomes. Can you believe, Madam Deputy Speaker, that the NAP, which we published just last Friday—we put out the written ministerial statement on Monday—had been waiting over a decade under the previous Government? We managed to get it out in eight months. I am quite proud of that. On our wider work on neonics, before Christmas we made a written ministerial statement talking about how we wanted to ensure a complete ban in the use of the emergency authorisation. The hon. Lady will know that I declined this year’s emergency authorisation for the use of Cruiser pesticides. That demonstrates the Government’s commitment to tackling some of the concerns that are widely held. The quality of our water is, of course, essential for supporting ecosystems, providing clean drinking water and producing our food. Maintaining healthy and clean water sources is vital to achieving the Government’s mission for sustainable economic growth, but the public are also concerned about chemicals used for the treatment and prevention of fleas and ticks for pets in UK waterways. The Government are committed to understanding the impacts of veterinary medicines entering our environment. Speaking more widely about water quality, the flawed water system that the Government inherited is still discharging record levels of sewage into our rivers, lakes and seas. The situation is not just an environmental failure; it is also a public health crisis, demanding our immediate and decisive action to rectify decades of neglect and mismanagement. We need a systematic approach to tackling issues that impact the whole of the drainage and waste water systems, stopping the unnecessary pressure from rainwater and sewage misuse entering the system to the point at which it is discharged into the environment. As mentioned, the Water (Special Measures) Act 2025 gained Royal Assent on 24 February 2025, boosting the power of water sector regulators to tackle pollution. That major legislation delivers on this Government’s promise to clean up the water sector and is the most significant increase in enforcement powers for water industry regulators in a decade. The Act will give regulators new powers to take tougher and faster action to crack down on water companies damaging the environment and failing their customers. However, we do not just want to give that—oh no, we want to do so much more. Further legislation aimed at fundamentally transforming how our entire water system operates will be guided by the findings of the Independent Water Commission, led by Sir Jon Cunliffe, which is currently conducting the largest review of the industry since privatisation. I also mention the wonderful start to the day I had today, because earlier this morning, at 9 o’clock, I met Sir Steve Redgrave and lots of young rowers from the University of Reading to discuss how we can improve our water quality for the rivers and lakes that we all love. It was a pleasure to have a cup of coffee with him very early this morning and talk about our shared ambition to clean up our rivers. Having spoken about the importance of water quality, I will turn in detail to the topic of veterinary medicines in waterways. The Government recognise the presence of parasiticides—I nearly got away with that—in the wider environment as a significant concern, and we are actively gathering evidence on that complex, multifactorial issue. All veterinary medicines undergo a rigorous scientific assessment before approval. As the regulator for veterinary medicines, the Veterinary Medicines Directorate balances the benefits of veterinary medicine for animal health and welfare, as well as human health protection, against the associated risk, which obviously includes environmental risks. Medicines are only ever authorised if the benefit outweighs the risk. The VMD follows internationally recognised guidelines for assessing the environmental risks of veterinary medicines for all animals, including pets. Fleas and ticks can lead to, as mentioned, discomfort and distress in pets. Those parasites can host microbes that cause disease in pets and potentially in pet owners who encounter the fleas and ticks. Topical flea treatments play a crucial role in protecting both animal and human health from fleas, ticks and disease. It is therefore essential that we take a balanced approach to the benefits of such treatments and their potential environmental impact when considering the issue. While there is evidence of the presence of fipronil and imidacloprid in fresh waters, it is well established that, as insecticides, these substances are inherently toxic to invertebrates and we do not understand the effects that current levels are having at a population and ecosystem level. We are, however, committed to understanding the potential impacts of veterinary medicines entering the environment. The VMD has led on the formation of a cross-Government group on pharmaceuticals in the environment to develop a co-ordinated strategy to reduce the impact of the substances in the environment. The group includes key governmental bodies, including the Environment Agency, the Medicines and Healthcare products Regulatory Agency, the Health and Safety Executive and representatives from the devolved Governments. While the VMD is prioritising the development of an evidence base, working to resolve the issue will require involvement by all key stakeholders, including the pharmaceutical industry and veterinary professionals. The work does not come without challenge and stakeholders remain divided on the way forward. Some advocate for the benefits of year-round parasiticide use for humans and animal health, others emphasise the need for more cautious use, while some push for a complete ban. Any decision to limit use must be carefully weighed against the benefits to ensure a balanced approach, as restrictions could impact animal welfare, animal health and even public health. Also, there is still a critical evidence gap in understanding the full impact of those options on both animal and human health, as well as on the environment, and that must be explored further before any regulatory action is taken.

I will give way to the hon. Lady on the Liberal Democrat Bench and then to my hon. Friend.

Could the Minister just clarify whether that group will consider the benefits of using natural remedies, or a combination of natural remedies, and of ensuring that people are fully aware of the benefits of that, and that that will be in some way quantified, as my hon. Friend the Member for Tiverton and Minehead (Rachel Gilmour) mentioned during her speech.

Yes, we are going to look at all the evidence on the available options. As I say, there is a difference of opinion over the best way forward; people have different views on that. It is my job, as we are a responsible Government, to look at all the evidence and try to find a balanced way forward, so that will be included as part of the evidence base.

Is there a rough timeline for that group to come back with a report?

My hon. Friend is always very dedicated to DEFRA-related issues, and it is always nice to see her here. I will check to see whether I can give her a more detailed decision on timing—if I cannot do so in this meeting, I will ensure that I let her know afterwards. As I said, the VMD is developing the evidence base and has commissioned scientific research to investigate how these substances reach rivers and streams. It is working closely with stakeholders to collect data and address the issue. It is supporting calls for a review of the internationally agreed environmental risk assessment standards. The VMD and the Environment Agency are working closely together to understand the risks posed by these chemicals and to respond appropriately. To further address this issue, the group on pharmaceuticals in the environment has developed a road map for reducing levels of two veterinary substances in UK surface waters. The priority for this road map is to raise awareness and improve pet owner education on risks and appropriate use—I know that point has come up here. Once finalised, that road map would be available to all stakeholders. As unresearched policies can fail badly, any changes we implement must be evidence based and measurable to achieve success. This Government will not turn the other way or continue to allow our rivers, lakes and seas to be polluted. Through the Water (Special Measures) Act 2025, the independent Water Commission, future legislation and many other actions, we are demonstrating our commitment to a comprehensive reset of the water industry and will drive long-term transformative change. We remain dedicated to addressing the environmental impact of veterinary medicines, and will continue working with relevant stakeholders to find solutions that protect both animal health and the environment. I again congratulate the hon. Member for Tiverton and Minehead on securing the debate. The public want clean water and we are determined to deliver it. Question put and agreed to.

20:26:00