| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| history of water filtration | 1.68 | 0.2 | 3205 | 46 | 27 |
| history | 0.38 | 0.5 | 7437 | 89 | 7 |
| of | 1.2 | 0.4 | 2552 | 12 | 2 |
| water | 0.16 | 0.3 | 8170 | 15 | 5 |
| filtration | 1.61 | 0.8 | 2203 | 97 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| history of water filtration | 1.5 | 0.7 | 6587 | 55 |
| japanese water filtration history | 0.07 | 0.3 | 4974 | 36 |
| history of water filter | 1.99 | 0.1 | 632 | 70 |
| who invented water filtration | 1.98 | 0.5 | 5364 | 90 |
| first water filtration system | 1.32 | 0.8 | 2613 | 96 |
| when was water filters invented | 1.17 | 1 | 2827 | 23 |
| how old is the water filtration process | 0.71 | 0.9 | 4600 | 67 |
| who invented the first water filter | 0.72 | 0.2 | 6031 | 32 |
| who made water filters | 1.82 | 0.1 | 4433 | 94 |
| facts about water filtration | 0.19 | 0.7 | 8671 | 35 |
| article about water filtration | 0.99 | 0.1 | 143 | 49 |
| history of water purification | 1.67 | 1 | 3539 | 6 |
| research about water filtration | 0.14 | 1 | 7885 | 69 |
| related literature about water filtration | 0.12 | 0.1 | 9838 | 59 |
| what is water filtration | 0.2 | 0.2 | 5852 | 75 |
| american made water filtration | 1.51 | 1 | 9664 | 99 |
