REMOVE

1. Drinking water

WHAT

1. Public health (7)
2. Memorials -- England -- S … (6)
3. Monuments -- England -- S … (6)
4. Watering troughs (6)

WHERE

1. ENGLAND, UK (10)
2. Sheffield, South Yorkshir … (8)
3. Ashford-in-the-Water, Der … (1)
4. Doncaster, South Yorkshir … (1)

WHO

1. not known (10)

WHEN

1. 1903 (3)
2. 1991 (2)
3. 1883 (1)
4. 1890 (1)
5. 1902 (1)