I particularly like the rhyme

The chloride, the fluoride, the cryptosporidium*
FLUSH THEM OUT 'cos it's time to get rid of 'em.

* Large areas of the west of Ireland have been under 'boil notices' for years now, with infestations of cryptosporidum, e coli and other water-borne pests due to septic tanks and the sewers of housing estates draining into rivers and lakes that supply publicly piped domestic water systems.