This video from the USA says about itself:
Dozens Of US Cities Caught Cheating On Drinking Water Tests
2 June 2016
Even after the Flint, Michigan water crisis it took a publication in the UK to investigate the drinking water of major American cities. What The Guardian found in their investigation of drinking water is shocking. Cenk Uygur and Ana Kasparian of The Young Turks discuss.
The results of an investigation by British newspaper the Guardian reveal that, in the last decade, 33 major US cities have employed water testing “cheats” deliberately aimed at hiding dangerous levels of lead in their water supply: here.
Report documents widespread failure of US communities to test water for lead: here.