Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Wellhead protections account for the proportion of the total number of survey.
| District | The number of samples | Well seal | Wellhead above ground | Well housing |
|---|---|---|---|---|
| Changping | 43 | 93% | 93% | 93% |
| Daxing | 37 | 83% | 83% | 83% |
| Fangshan | 80 | 75% | 68% | 20% |
| Huairou | 58 | 73% | 29% | 51% |
| Mentougou | 23 | 87% | 48% | 52% |
| Miyun | 85 | 65% | 69% | 44% |
| Pinggu | 41 | 90% | 87% | 90% |
| Shunyi | 54 | 98% | 98% | 98% |
| Tongzhou | 51 | 98% | 98% | 98% |
| Yanqing | 63 | 72% | 3% | 8% |
