Figure 1.

Change in domestic drinking water choices during past decade. The percentage of tap water use remained relatively stable, with only a 0.74% increase compared with that in 2011. A decrease in barrelled water by around 11.0% and an increase in filtrated water use by 11.85% were found. Information of domestic bottled water use wasn’t gathered in 2001, its percentage in 2011 was 3.25%. Statistical significance were found in difference of filtrated water (P < 0.001) and barrelled/bottled water (P < 0.05).