| Date of Status Change | Active or Inactive | Primary Source | PWS Type | Population | PWS Name | 
| Current Status 02/01/2022 | A | GW | NC | 400 | DOUGLAS CO PKS - HALFMOON BAY | 
| 02/01/2022 | A | GW | NC | 100 | DOUGLAS CO PKS - HALFMOON BAY | 
| 02/14/2008 | A | GW | NC | 100 | DOUGLAS CO PKS - HALFMOON BAY | 
| 12/06/2007 | A | GW | NP | 100 | DOUGLAS CO PKS - HALFMOON BAY | 
| Population Type | Avg Daily Population | Start Month | Start Day | End Month | End Day | Effective Begin Date | Effective End Date | 
| Transient | 400 | 1 | 1 | 12 | 31 | 12/29/2021 | |
| Transient | 100 | 1 | 1 | 12 | 31 | 12/06/2007 | 12/28/2021 |