Outdoor Swimming

Outdoor Swimming at Dosthill Quarry

Opening Times (excluding Bank Holidays)
Thurs & Fri 1-9pm, Sat & Sun 7am-4pm!!

But always check our times below before you come, particularly between October and April.
If there are no divers or swimmers on site by the last check-in time, the staff will close early.

Stressed with work &/or the kids? Lose that stress and come to Dosthill Quarry
from Thursday to Sunday and enjoy a relaxing swim!
Our pure, magnesium-packed water and picturesque location
are so calming, your tensions will float away!

With the opportunity of a floodlit night swim Thursday & Friday, from September to March inclusive
it is the ultimate relaxation activity.

That’s 4 days a week, including 2 days after work and after school!!

But all swimmers must register (for FREE)
by completing the online form further down this page.  

Surface water temp at 05/01/2020
7.5 degrees

It’s easily the warmest lake in the region from October to March because of its depth, which retains the summer heat longer, compared to most local lakes which are much shallower, and lose their heat quickly.  e.g. as ambient temperatures hit their low-point, shallow lakes can dip under 2 degrees, while Dosthill Quarry is comfortably at 7 degrees. So the lake will be warmer than the region’s shallow lakes until around April each year.

So continue to enjoy your swimming for longer than you might think!

Dosthill Quarry has been owned and operated by Ian Forster for 30 years.

You’ll enjoy the friendly family atmosphere that has made this incredibly attractive, and important, national swimming venue so popular. A former granite quarry flooded by a fresh water spring from 150 feet underground in 1934, the site is consistently recommended by swimmers for its clear, clean, pure, & healthy deep water.

Since Dosthill Quarry’s spring water is 5000 times more pure than the UK standards
for tap water, you’ll be missing out if you swim anywhere else!!

Not only have recent water tests confirmed the purity and clarity of the spring-fed lake, but also the presence of the spa mineral magnesium, considered to be the most important health mineral in the world. Read about the many health benefits here Magnesium – the most important mineral we all overlook.

No Swimmer’s Itch!

Unlike many shallow man-made lakes and former gravel pits that harbor freshwater snails, and parasites that infect swimmers, local residents and swimmers from many areas of the UK have enjoyed their sport free of the dreaded “swimmer’s itch” for more than 80 years. In fact, visiting swimmers who do have “the itch” often get better in this magnesium-rich, therapeutic spa lake.

Healthy Outdoor Training Centre

All abilities and ages are welcome, including costume-only and wetsuit swimmers (see our safety policy below). Whether you’re trying open water swimming for the first time, a child wanting to enjoy some splash time, or a member of our English Channel relay team you’ll get fitter and healthier at this amazing venue. Triathletes, in particular, can benefit from the variable rugged terrain of this 32 acre training centre by adding bike and run phases to their swim session. Or anyone just looking to get fitter, or lose weight, can benefit from the healthy outdoor environment.

Resident Swim-Bike-Run & Fitness Coach

ASA Swimming Teacher, Middle Distance Coach and former British team member, Ian Forster, is available for training tips and schedules.

Open 34 Hours A Week

We love helping our swimmers achieve their goals whether you do one 400m lap, a 40 lap/10000 metre swim, or a recreational swim around the lake, the clear water enables swimmers of any level to quickly improve their technique by being able to see the rotation and inclination of their hands during each stroke. Open 34 hours every week for you to get fitter, improve your swimming, and recover in our magnesium-packed ultra pure spring & spa lake.

Normal opening times                                                                       

Dosthill Quarry is OPEN ALL THE YEAR (+ 5 bank Holidays by special arrangement and advance notice). Plan your swim to arrive within 3 hours of the closing time. If no swimmers or divers have checked in by this time the staff may well close early. If you intend to arrive late, or are running late, please call 01827 281304 to check if we will be open.

Thursday     1pm-9pm. Last check-in at 7:30pm. Exit from the water by 8:30pm.                   

Friday     1pm-9pm. Last check-in at 7:30pm. Exit from the water by 8:30pm.                      

Saturday     7am-4pm. Last check-in at 2:30pm. Exit from the water by 3:30pm.                    

Sunday     7am-4pm. Last check-in at 2:30pm. Exit from the water by 3:30pm.

Festive opening times 2019-20                                                                       

Plan your swim to arrive within 3 hours of the closing time. If no swimmers or divers have checked in by this time the staff may well close early. If you intend to arrive late, or are running late, please call 01827 281304 or 07928 562916 to check if we will be open.

Thursday 26/12 9am-12am.                   

Friday 27/12      1pm-9pm. Last check-in at 7:30pm. Exit from the water by 8:30pm.                      

Saturday 28/12 & 04/01    7am-4pm. Last check-in at 2:30pm. Exit from the water by 3:30pm.

Sunday 29/12 & 05/01     7am-4pm. Last check-in at 2:30pm. Exit from the water by 3:30pm.

Venue facilities

Free parking        Changing rooms       Toilets        Rescue boat

Resident swim-bike-run & fitness coach       Video coaching

Hot & cold drinks        Home-cooked snacks and meals

Equipment hire     Well-stocked, competitively-priced shop

Normal Prices

£7 per casual swimmer per outdoor swimming session Thursday – Sunday, half price 5-15’s and dogs. These are reduced from October to March as a SwimSaver Club member.

£1 tow float hire£4 shortie wetsuit hire. £6 full wetsuit hire. Training schedules & coaching from £5 per 10 min session priced according to need and whether personal, group or video.

How to Find Us

Dosthill Quarry National Dive site
Church Road
Tamworth, nr Birmingham
B77 1LL (postal only)
B77 1LU (best for satnav)

Use your satnav or Google Maps to locate postcode B77 1LU – Church Road, Dosthill.

We are at 52o59’64.10″N, 1o68’78.00″W. So better still, copy and paste the following Geographic coordinates into Google Maps or your satnav to find our exact location on earth!


This should bring you into Church Road from the A51.
Please turn off car radios at this point to minimise noise disturbance to local residents.
Continue past the Church on your left, and turn left through green metal gates, into our site car park.

outdoor swimming

First New Year Swimmers

John Brain - first swimmer at Dosthill Quarry in 2016
John Brain
Nick Balsdon - first swimmer at Dosthill Quarry in 2016
Nick Balsdon

John Brain & Nick Balsdon are usually the first swimmers at Dosthill Quarry in the New Year at 7am when it is still dark! Note no suits in the positively tropical 8 degrees clear, clean spring-fed water. No algae, no swimmer’s itch, no freshwater snail parasites that bite. The first of many swims in an exciting new swimming year.

Information on Outdoor Swimming

Safety Policy. Whether you wear a costume only or a wetsuit, you are welcome. But to protect you in the deep water, you need adequate buoyancy. Wearing a wetsuit is the preferred way to prevent you sinking in the event of cramp (and keep you warm), and to increase your confidence if you are new to open water swimming. Many of our strong & confident swimmers tow a swim float summer & winter alike! If you don’t have a wet suit or tow float you can hire one for £1 tow float, £4 shortie wetsuit, £6 full wetsuit, or buy your own on site.

Course. The above outdoor swimming course has been carefully planned and set out to provide a single 400 metre lap with integral 100 metre and 50 metre legs for split times. Four laps (1600 metres) is 5 metres short of a mile. 1000 metres would be 2.5 laps. The course has been positioned away from the quarry walls, particularly at the southern end of the lap (bottom of photo) where occasional loose rockfalls can occur, and away from the diver training areas where diver ascents are more frequent. Other than when avoiding a diver, please ensure you stay close to the outdoor swimming course buoys and on the course line.

Divers. Your swim may coincide with times when scuba divers are using the quarry. You can see where they are in relation to you by bubbles breaking the surface of the water. One of the safe practices all divers should follow when surfacing is to extend their arm, look up and around and surface slowly. Should you see bubbles on the surface in front of you, during your swim be prepared to avoid the bubbles. However, by the time you get close to where you first saw the bubbles, normally the divers have moved well away.

Footwear. We recommend bringing suitable footwear, such as flip-flops, crocs, or some old trainers, for the outdoor swimming transition in and out of the water to avoid any discomfort or injury to your feet.

Outdoor Swimming Declaration. The ASA require a declaration to be made on an individual’s ability to complete a planned outdoor swimming activity. “It should be quite clear to the swimmer that they are declaring that they are not only fit enough and have the stamina to complete the distance, but also that the swimmer is medically fit to do so”. Any pre-existing medical condition including medication and/or sensitivity to particular drugs should be included on the form. Our registration below includes this declaration.

Safe Outdoor Swimming Always

Complete our FREE registration for outdoor swimming

Email is our preferred way of contacting our registered swimmers.
If you don’t have an email address, call Dive In Ltd on 01733 351288 (any day from 8am – 4.30pm) or Dosthill Quarry on 01827 281204 in sit opening times.

After you press the submit button you will receive confirmation that “Your registration for outdoor swimming was sent successfully to ian@dosthillquarry.com” and you will receive a confirmation email.

Print off the email and bring it with you on your first visit. Sign and date it at that time and we’ll retain it on file.


Required Email

Required First name

Required Last name

Required Gender MaleFemale

Required Date of birth (dd/mm/yyyy)

Required City or town

Required Post code

Required Mobile Phone

Home Phone

Swimming status

Required I am a strong and confident swimmer in open water

Required I can swim the following metres

Required Swimming Club (or enter None)

Required National Swimming Association (or enter None)

Required Pre-existing medical condition including medication and/or sensitivity to particular drugs (or enter None)

Optional Do you want to swim with your dog(s)YESNO

Terms and conditions

  • The above information can be stored and used to contact me.
  • I will print off, and sign, date and hand in my confirmation email on my next visit to the lake.
  • I will always check in at reception or the gate on arrival.
  • I swim at my own risk.
  • I swim in accordance with the safe practices of my swimming club and national association.
  • I will regularly read, stay current with, and abide by the notices, regulations, recommendations and procedures as published from time to time at the lake and on this website, particularly those relating to emergency action.
  • In the event of an injured swimmer emergency, site staff may ask for swimmers and divers to assist with the rescue. I will be willing to assist.
  • I am aware that the use of a wetsuit is preferred at Dosthill Quarry to provide thermal protection and buoyancy. However, if I feel the weather, my exposure experience and my swim goals are such that I do not need a wetsuit, then I agree to swim towing a buoyancy float to support me in the event of experiencing cramp or other problem, until rescue assistance arrives.
  • Liability Release and Express Assumption of Risk

    This liability release may be used as evidence in a court of law if you decide to sue any released party or person. Please read this document.

    I, the above-named swimmer, hereby agree that I have been fully advised and completely informed of the inherent risks and hazards associated with open water swimming.

    I, further, completely understand that open water swimming involves certain inherent risks and hazards to include: hypoxia, asphyxia, hypothermia and drowning. These maladies may result in permanent injury or even death. By signing this document I evidence that I am fully appraised of the risks and hazards associated with the type of activity that I am contemplating and I expressly assume these risks. I, further fully understand that my swimming activity may be conducted in point of time and distance in a remote location not readily accessible to first aid and rescue facilities. Nevertheless, I still choose to proceed with the activity despite the possible lack of medical facilities to assist me should I become injured.

    I fully understand and agree that the Dosthill Quarry centre through which I participate in the activity, nor the owner of Dosthill Quarry, Ian Forster, nor any of his respective employees, officers, agents or assigns, may be held liable or responsible in any fashion for any injury, death or damages to me or my family, heirs or assigns that may occur as a result of my participation in this open water swimming activity or as a result of active or passive negligence of any party including the released parties named in this document.

    In exchange for me being allowed to enrol and participate in this activity I hereby personally assume all risks in conjunction or connection with this activity or any harm or injury or damages that may befall me, my heirs or assigns while participating in this activity. I specifically assume all risks associated with my participation in this activity whether foreseen or unforeseen.

    In consideration for my participation in this activity I save and hold harmless and agree to indemnify the Dosthill Quarry centre at which I am participating in an open water swimming activity, and the owner of Dosthill Quarry, Ian Forster, of any claim or lawsuit brought by me, my family, my estate, my heirs or assigns arising out of or in connection or in conjunction with participation in this activity including both claims arising during or after the activity, and it is my express intention to release the parties cited from all liability and responsibility whatsoever for personal injury, property damage or wrongful death however caused.

    I also understand fully that open water swimming activities are physically strenuous, and that they require specialized training. I also understand that I will be physically exerting myself during this activity and that should I become injured as a result of a heart attack, failure to control my panic, failure to control my breathing or hyperventilation, I specifically assume the risk of any resulting injuries and in exchange for my participation in this activity I expressly agree that I will not hold the released individuals in this document responsible.

    By submitting this document online, and by signing it on my first subsequent visit to the lake, I evidence that I have fully read, contemplated, and understand the contents of this liability release and express assumption of risk, and release my right to sue. I agree to the terms and conditions of this document in exchange for my participation in this activity. I further state that I am of lawful age and legally competent to sign this release or that I have acquired the specific written consent of my parent or guardian.

    I understand that this document constitutes a contract between myself and the released parties cited.

    Under 18?

    Your parent or guardian must enter their name and relationship below
    and tick the agreement box for you

    Applicable? Name

    Applicable? Relationship

    Required I am 18 or older andI accept and agree to all terms

    After you hit the 'Send' button below

    You'll receive confirmation that ...
    "Your registration for outdoor swimming was sent successfully to ian@dosthillquarry.com"
    and we’ll send you a confirmation email