This survey shows the concerns of U.S. Americans towards the environmental threat of the pollution of rivers, lakes and reservoirs from 1989 to 2017. About 57% of the respondents were worried "a great deal" about the pollution of rivers, lakes and reservoirs in 2017.
1989 | 72 | 19 | 5 | 3 |
1990 | 64 | 23 | 9 | 4 |
2000 | 66 | 24 | 8 | 2 |
2006 | 51 | 33 | 11 | 5 |
2008 | 50 | 34 | 12 | 4 |
2010 | 46 | 32 | 18 | 4 |
2011 | 46 | 33 | 16 | 6 |
2012 | 48 | 31 | 17 | 4 |
2013 | 46 | 32 | 16 | 6 |
2014 | 53 | 28 | 15 | 3 |
2015 | 47 | 32 | 15 | 6 |
2016 | 56 | 25 | 14 | 5 |
2017 | 57 | 28 | 11 | 4 |