A passer-by reported a man in difficulty on 15 April. Two police officers attempted to save him but he went under the water.
The 26-year-old’s body was recovered the following day. A post mortem-examination found that he died from drowning, West Midlands Police said.
Further tests are to be conducted in due course.
Mr Mill’s death is not being treated as suspicious but police are investigating why he was in the water, the spokesman added.
Please take caution when near any large pools of water, even when you think youre skilled enough to traverse them.
“Hatherton Lake” by www.flickr.com/photos/leejordan, License: creativecommons.org/licenses/by-sa/2.0