Table 3 Type of system vs. source in different size of treatment plants30.
From: A critical review of point-of-use drinking water treatment in the United States
Size of treatment plants | Type of system | Groundwater source | Percent groundwater source | Surface water source | Percent surface water source |
|---|---|---|---|---|---|
Very small | CWS | 24,139 | 88.4 | 3006 | 11.6 |
| Â | NTNCWS | 14,656 | 96.5 | 505 | 3.5 |
| Â | TNCWS | 75,139 | 97.1 | 2094 | 2.9 |
| Â | Total | 113,934 | Â | 5605 | Â |
Small | CWS | 9696 | 72.5 | 3659 | 27.5 |
| Â | NTNCWS | 2255 | 91.1 | 204 | 8.9 |
| Â | TNCWS | 2823 | 94.7 | 152 | 5.3 |
| Â | Total | 14,774 | Â | 4015 | Â |
Medium | CWS | 2791 | 55.5 | 2240 | 44.5 |
| Â | NTNCWS | 102 | 62.6 | 61 | 37.4 |
| Â | TNCWS | 59 | 78.7 | 16 | 21.3 |
| Â | Total | 2952 | Â | 2317 | Â |
Large | CWS | 1505 | 38.5 | 2409 | 61.5 |
| Â | NTNCWS | 19 | 50.0 | 19 | 50.0 |
| Â | TNCWS | 9 | 69.2 | 4 | 30.8 |
| Â | Total | 1533 | Â | 2432 | Â |
Very large | CWS | 74 | 16.8 | 367 | 83.2 |
| Â | NTNCWS | 0 | 0 | 1 | 100 |
| Â | TNCWS | 0 | 0 | 1 | 100 |
| Â | Total | 74 | Â | 369 | Â |
