Sounds very sensible to me considering the below....
Untreated effluent flowed into waterways for more than 1.5m hours, data shows
www.theguardian.com
I'm all for outdoor pursuits but I'd hesitate re swimming in rivers and the reason is that there are, at present no rivers in England that are officially recognised as being safe to swim in and the reason is that lawfully, when excessive rainfall overwhelms a sewage pumping station raw sewage can be pumped into a river..I don't think that many people realise this.
There are 12 inland lakes used by swimmers which sound a better option than rivers considering that there are 16,000 sites where untreated sewage can,legally, be pumped into rivers in 'exceptional circumstances' and that's, generally, a deluge of rain which we get increasingly more often put down to climate change. In these cases the pumping station becomes overwhelmed.In 2019, in England, there were 200,000 discharges of raw sewage into rivers.There's a risk,albeit rare, of contracting Weil's disease (from infected rats' urine) and it can enter the body through cuts, scratches, nose and mouth ,infact the double Olympic gold medalist (rowed alongside Steve Redgrave)Andy Holmes contracted it and died in 2010. There are about 50 cases a year in the UK. Some years ago I felt I had to tell my neighbour that her two boys were e playing in the nearby stream which I knew had rats in it. She'd never heard of Weil's disease .The next time we spoke she said she'd found out what it is and stopped the boys playing there.
On the brighter side The water can be tested
https://www.simplexhealth.co.uk/how...-water-for-bathing-or-swimmingis-cms-104.html
A very real example is Warleigh Weir ,near Bath/Bristol is a great place to photograph steam locos on their way to and from the West Country ..it's also used by people to 'cool off' in hot weather and I've seen several photos recently of lots of people (including children) there during the hot days that we've been having..weeks in fact.
Wessex Water has responded
www.bristolpost.co.uk
On a tripadvisor post re this weir one person said his friend got his foot stuck in the carcass of a cow.
www.tripadvisor.co.uk
July 18th article re river Wharfe
https://www.theguardian.com/uk-news...onment-ministers-blocking-bathing-application
Dangerous pollutants in England’s waterways have reached their highest levels since modern testing began, The Times can reveal, with no river in the country now certified as safe for swimmers. Wild swimming has surged in popularity, with tens of thousands of people bathing in countryside rivers and
www.thetimes.co.uk
I really don't mean to come across as a killjoy but wild swimming is taking off and I'm sure I'd be right in thinking that most of those who take part in it and the casual swimmmers (on hot days) have no idea about what's in the water in the way of pollutants. England is amongst the most polluted (worst water quality) in Europe.
Best bet is to sort out the testing..as per the link above.