| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| epa lead standards in drinking water | 0.87 | 0.5 | 808 | 27 |
| epa lead in drinking water standard | 1.24 | 0.2 | 6740 | 87 |
| epa lead levels in drinking water | 1.48 | 0.3 | 1156 | 38 |
| epa limits for lead in drinking water | 0.95 | 0.3 | 7141 | 4 |
| epa lead in drinking water limit | 0.41 | 0.3 | 5473 | 13 |
| epa lead in drinking water | 0.62 | 0.2 | 7722 | 3 |
| drinking water standards for lead | 0.94 | 0.2 | 6914 | 57 |
| epa lead levels in water | 0.52 | 0.8 | 2146 | 64 |
| epa lead threshold in drinking water | 0.76 | 0.8 | 7327 | 47 |
| lead in drinking water standard | 1.17 | 0.9 | 8767 | 40 |
| epa lead in water | 0.15 | 0.3 | 1305 | 58 |
| federal guidelines for lead in drinking water | 0.17 | 0.8 | 7435 | 28 |
| epa method for lead in drinking water | 1.27 | 0.3 | 7364 | 24 |
| lead in drinking water regulations | 0.93 | 0.9 | 9650 | 41 |
| federal drinking water standard for lead | 1.43 | 0.6 | 5311 | 51 |
| lead levels in drinking water standard | 0.93 | 0.9 | 4811 | 100 |
