| Clue | Source | Date |
|---|---|---|
| Contaminated, poisoned (8) | ||
| Contaminated | The Telegraph Quick | 15 Jun 2024 |
| Like cleanup sites | ||
| Besmirched a dull poet perhaps | ||
| Gave a dirty look | LA Times Daily | 04 Aug 2022 |
| Contaminated | Irish Times Simplex | 09 Feb 2021 |
| Contaminated | The Telegraph Quick | 29 Jun 2019 |
| Not potable | ||
| Like many U.S. rivers and streams |