Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Township | FIPS | Population\ncenter | Population | Population\ndensity\n/km² (/sq mi) | Land area\nkm² (sq mi) | Water area\nkm² (sq mi) | Water % | Geographic coordinates |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Belleville | 05575 |  | 675 | 4 (11) | 155 (60) | 0 (0) | 0.14% | 37°3′50″N 96°7′48″W﻿ / ﻿37.06389°N 96.13000°W |
| Caneyville | 10425 |  | 88 | 1 (2) | 144 (55) | 1 (0) | 0.38% | 37°15′23″N 96°27′27″W﻿ / ﻿37.25639°N 96.45750°W |
| Center | 11575 |  | 75 | 1 (1) | 144 (56) | 1 (0) | 0.80% | 37°15′28″N 96°18′31″W﻿ / ﻿37.25778°N 96.30861°W |
| Harrison | 30275 |  | 114 | 1 (2) | 142 (55) | 0 (0) | 0.14% | 37°4′3″N 96°26′32″W﻿ / ﻿37.06750°N 96.44222°W |
| Hendricks | 31300 |  | 179 | 1 (3) | 142 (55) | 0 (0) | 0.05% | 37°1′12″N 96°18′42″W﻿ / ﻿37.02000°N 96.31167°W |
| Jefferson | 35125 | Cedar Vale | 834 | 6 (15) | 144 (56) | 1 (0) | 0.45% | 37°6′45″N 96°29′12″W﻿ / ﻿37.11250°N 96.48667°W |
| Lafayette | 37650 |  | 65 | 0 (1) | 154 (59) | 2 (1) | 1.40% | 37°15′36″N 96°10′20″W﻿ / ﻿37.26000°N 96.17222°W |
| Little Caney | 41525 |  | 353 | 3 (8) | 117 (45) | 0 (0) | 0.31% | 37°3′51″N 96°1′5″W﻿ / ﻿37.06417°N 96.01806°W |
| Salt Creek | 62775 |  | 123 | 1 (3) | 127 (49) | 0 (0) | 0.34% | 37°15′13″N 96°1′34″W﻿ / ﻿37.25361°N 96.02611°W |
| Sedan | 63775 | Sedan | 1,660 | 13 (34) | 128 (49) | 1 (0) | 0.65% | 37°7′50″N 96°11′6″W﻿ / ﻿37.13056°N 96.18500°W |
| Summit | 69025 |  | 106 | 1 (2) | 144 (56) | 1 (0) | 0.40% | 37°8′17″N 96°19′53″W﻿ / ﻿37.13806°N 96.33139°W |
| Washington | 75550 |  | 87 | 1 (2) | 121 (47) | 1 (0) | 0.71% | 37°7′41″N 96°0′52″W﻿ / ﻿37.12806°N 96.01444°W |
Question:
how many of the townships have their water area as 0 km?
Answer:
5