Yesterday Class 2 visited the Cilfynydd water treatment site near Pontypridd in South Wales.
It was a long journey but the children were amazing for the whole bus ride! We went through stunning scenery on our way down, travelling through the Brecon Beacons and passing Pen Y Fan.

When we arrived, we were stopped by a huge gate and had to wait for it to be opened to allow us in. There were big fences everywhere, with barbed wire on the top, and we were all wondering where on earth Miss Clarke had taken us! This nervous feeling soon went when we met our brilliant guide, Jo, who led us through some woods to an outdoor classroom which was beautifully painted! We had our first activity here, where the children had to sort objects into flushable and non-flushable items. The children did very well sorting the objects but we all thought flushable wipes would be fine to put down the toilet. We were wrong! Jo told us that they clump together in the pipes and cause huge blockages before they disintegrate. We also learnt to never pour fat and grease down the sink as these cause ‘fatbergs’ in the pipe. She told us that they had recently removed a ‘fatberg’ that weighed as much as 33 elephants!


After this, we had a tour of the water treatment site. Jo showed us the different stages of the water treatment process. We first looked at the water inlet where all the dirty water comes from houses. The children really enjoyed this part as it was like a game of I spy! You wouldn’t believe what people flush down their toilets!

Following this, we saw the other stages of the treatment process. The most amazing part was that the bacteria was killed by pumping lots of oxygen into the water! This made the brown water bubble, meaning the children gave it the nickname, Poopuzzi!
After the tour of the treatment site, we went down to the river side to do an investigation to see whether the river flowed fastest in the middle or on the side. We threw dog biscuits into the river and then timed their journey over a 5m distance. We discovered that the middle of the river flowed fastest and as a reward, we went for a paddle by the pebbles in the shallow part of the river.

In the afternoon, we did an experiment to show how water evaporates and condensates in the water cycle. Jo then asked the children to also think about why rain doesn’t taste salty seeing as the water evaporates from the sea. So, we added salt water to a bowl over a candle and waited to see what happened. Everyone was amazed when they saw the salt sitting at the bottom of the bowl after the water had evaporated!

We ended the day with a really fun game, where the children had to recreate the water cycle with a sponge, a tarpaulin and a bucket!

It was a fantastic trip and we all learnt a lot!