# Forellen waken over ons drinkwater

The Institute for the Quality Assurance of Water Products (KIWA) is carrying out tests with trout in order to detect poisonous substances in Rhine surface waters for a quick and efficient intervention. SHOTS: int. water purification plant; discharge into the Rhine by a company; flow-through aquaria with trout; fish react when dirty water enters causing an alarm to sound; the Rhine with shipping.

- Kind: Film
- By: Polygoon-Profilti (producent)
- Archive: [Europeana](https://www.europeana.eu/item/2051906/data_euscreenXL_https___www_openbeelden_nl_media_667580)
- Licence or status: [CC BY-SA 4.0](http://creativecommons.org/licenses/by-sa/4.0/) (as the archive states it)
- Credit: Netherlands Institute for Sound & Vision
- Who can watch: Teens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/europeana/2051906~data_euscreenXL_https___www_openbeelden_nl_media_667580?play=1)