user: Question: how many townships where pop (2010) and ater is 0.818
Columns: ['Township', 'County', 'Pop. (2010)', 'Land ( sqmi )', 'Water (sqmi)', 'Latitude', 'Longitude', 'GEO ID', 'ANSI code']
Types: ['text', 'text', 'real', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Baden', 'Ward', 35.0, '34.753', '0.940', '48.588295', '-102.048091', 3810104140.0, 1759673.0]
SQL:

assistant: SELECT COUNT("Pop. (2010)") FROM "Table" WHERE "Water (sqmi)" = '0.818';