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water purification

Much of the water that enters the Estate through run-off comes from neighbouring intensive farms, roads and built-up areas and therefore has the potential to contain significant amounts of pollution.

However, water-testing in 2016 gave all standing water on the Estate the highest reading for water purity, indicating that our land is now providing an effective system of filtration and purification.   

Surveys were conducted again in 2018 and a higher percentage of rivers and streams were found to have no pollution, compared to 2016. There were, however, some areas of high pollution levels in 2018 which will be re-tested.   

Dragonflies and mayflies are particularly susceptible to water pollution and the rise in populations of these species at Knepp (including the scarce chaser – a rare blue-eyed dragonfly found only in six places in the UK) are good indicators of water quality. As are rare plants like water-violet and lesser water- parsnip that are also now expanding in water bodies across the Estate.   

Surveys in 2005 and 2016 recorded water shrew presence in ponds, streams and ditches across the Estate. Water pollutants and pesticides can be harmful to the water shrew, either by being directly ingested during grooming or through adversely impacting their invertebrate prey. The presence of this sensitive small mammal at Knepp is a sign that water quality, and that the aquatic vegetation is providing a suitable habitat for them.  

Further Information

Lehmann, J., Bossio, D. A., et al. ‘The concept and future prospects of soil health’. Natural Reviews Earth & Environment 1 (10), pp. 544-553. (2020) 

Zimnicki, T., et al. ‘On quantifying water quality benefits of healthy soils’. BioScience, 70, pp. 343-352. (2020) 

Our 12+ Policy

Knepp Wildland Safaris and campsite are all about the quiet and patient observation of nature.

Some of the species we are likely to encounter are shy or can be frightened by loud noises or sudden movements. Our campsite with open-air fire-pits, wood-burning stoves and an on-site pond is unsuitable for small children.

For this reason, our safaris, holiday cottages and campsite are suitable only for children of 12 and over.

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