Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Water tower:

This text has been unreferenced on Wikipedia for a very long time. If you can't find a source, be bold and remove it!

"

Alternatives to water towers are simple pumps mounted on top of the water pipes to increase the water pressure.[1] This new approach is more straightforward, but also more subject to potential public health risks; if the pumps fail, then loss of water pressure may result in entry of contaminants into the water system.[2] Most large water utilities do not use this approach, given the potential risks.[citation needed]