| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| lead in drinking water standard | 1.53 | 0.1 | 2016 | 88 |
| lead levels in drinking water standard | 1.35 | 0.6 | 3158 | 95 |
| epa standards for lead in drinking water | 0.23 | 0.4 | 3777 | 40 |
| epa lead in drinking water standard | 1.39 | 0.7 | 4805 | 85 |
| osha standard for lead in drinking water | 0.92 | 0.3 | 7896 | 54 |
| acceptable lead levels in drinking water mg/l | 0.24 | 0.3 | 5454 | 7 |
| safe levels of lead in drinking water | 0.64 | 1 | 2285 | 46 |
| lead drinking water standard | 0.37 | 0.4 | 8522 | 63 |
| acceptable amount of lead in drinking water | 1.38 | 0.3 | 4179 | 63 |
| acceptable lead level in water | 0.67 | 0.6 | 8844 | 57 |
| lead level in water | 1.46 | 0.3 | 3449 | 98 |
| acceptable lead levels in stream water | 1.82 | 0.9 | 6164 | 84 |
| safe levels of lead in water | 1.19 | 0.6 | 7758 | 71 |
| acceptable amount of lead in water | 1.68 | 0.9 | 602 | 30 |
| federal drinking water standard for lead | 1.77 | 0.4 | 6644 | 6 |
