Lead
Lead (Heavy metal) appears in official Massachusetts testing data and public health and safety advisories.
Where It Appears
| Release | Records | Passed | Failed |
|---|---|---|---|
| 2024 testing release | 62935 | 62928 | 7 |
| 2025 testing release | 50651 | 50642 | 9 |
Derived navigation generated from structured relationships. Links are labeled by edge class and evidence trace; derived links are navigation, not primary assertions.