List of data sources and statuses of curation efforts:
| Source | Number | Downloaded | Cleaned | Standardized | Units | Numerical Values | End-use | Compounds | Duration | Notes | Meta | Source-family designation | URL | Parent data archived | Final QC | Archived | Merged into DB | Effective |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| State-Specific Water Quality Standards Effective under the Clean Water Act (CWA) | 1 | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE | DONE | 2025_01_03 |
| 40 CFR ELG | 2 | |||||||||||||||||
| WHO drinking water standards | 3 |