Extract from the Amateur Rowing Association's Website    (www.ara-rowing.org)
 
    8.2.4 Weill's Disease and Other Nasties

The water we row upon is not always as clean as we would choose and certainly is not pure enough to be swallowed without giving more than a passing            thought to the possible effects it will have upon our internal systems.

The ARA Water Safety Code has as its primary concern, the prevention of accidents involving physical injury, damage to equipment and at the worst, drowning.

There are other risks to health associated with water based activities which arise from the micro biological or chemical quality of the water itself and of its immediate environs. The use of inland waters can never be risk free and it is essential that as users, we are aware of the risks present.

Weill's Disease - Leptospirosis
The risk of contracting Leptospirosis from recreational water is small, however the serious nature of the disease is such that we must be aware of the dangers and should take simple precautions to reduce the risk of infection, viz., Cuts and abrasions (including blisters) should be covered with waterproof dressings. Wear footwear to avoid cuts and protect feet when paddling in the water (launching a boat). Shower after contact with the water. Wash hands thoroughly before eating or drinking.

If 'flu like symptoms develop shortly after contact with the water (1-3 weeks) then your doctor should be contacted and advised of the circumstances of exposure.

Blue-Green Algae - Cyanobacteria
Cynobacteria are commonly found in fresh and brackish water during mid to late summer. In favourable, stable conditions, blooms may form. Algal scums accumulate downwind on the surface of lakes and slow moving water. Toxins produced by large blooms have caused the death of sheep and dogs and skin and other disorders in humans, although no particular illness has been identified that can be linked with Blue-Green Algae.

By way of precaution -