| Clue | Source | Date |
|---|---|---|
| Calcium-rich liquid hurtling earthward | ||
| Pipe clogger, at times | Eugene Sheffer | 05 Nov 2024 |
| Cause of mineral buildup in faucets | USA Today | 12 Nov 2017 |
| Cause of mineral buildup in faucets | ||
| Firm tub filler? | ||
| Cause of sink stains | ||
| In which suds languish. |