how many townships where pop (2010) and ater is 0.818
CREATE TABLE table_1911 (
    "Township" text,
    "County" text,
    "Pop. (2010)" real,
    "Land ( sqmi )" text,
    "Water (sqmi)" text,
    "Latitude" text,
    "Longitude" text,
    "GEO ID" real,
    "ANSI code" real
)
SELECT COUNT("Pop. (2010)") FROM table_1911 WHERE "Water (sqmi)" = '0.818'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: how many townships where pop (2010) and ater is 0.818 ### Input: CREATE TABLE table_1911 (
    "Township" text,
    "County" text,
    "Pop. (2010)" real,
    "Land ( sqmi )" text,
    "Water (sqmi)" text,
    "Latitude" text,
    "Longitude" text,
    "GEO ID" real,
    "ANSI code" real
) ### Response: SELECT COUNT("Pop. (2010)") FROM table_1911 WHERE "Water (sqmi)" = '0.818'