Hertfordshire had further opportunities to extend their lead early in the second-half. Bakkali and Stead linked up with the latter doing well to wriggle free of his marker only to see his shot across goal well saved by Glover.
Bakkali seemed to be at the heart of everything going forward for Hertfordshire, as he played a defence splitting pass to put Milo Keane through one-on-one with Glover, but the goalkeeper somehow managed to block the goal-bound effort from near point-blank range.
Those missed chances proved to be costly for Hertfordshire as things finally started to click in the last third for the hosts.
Ricky Aguiar was the first to threaten as the tables turned with twenty minutes to go; he beat several Hertfordshire defenders on a surging run forwards before pulling the trigger, only to see his shot drift agonisingly wide of the post.
Sussex were given the perfect opportunity to draw level moments later, as Hertfordshire’s Samuel Ready fouled Ryan Simmons in his attempts to clear the ball.
Waters stepped up, placed the ball on the spot, and slotted neatly into the corner sending Heaps the wrong way.
Harrison Mott went close for Sussex ten minutes later, as he hit a dipping volley from twenty yards out just wide with Heaps worryingly scrambling across his goal.
With only three minutes remaining the home side took the lead. Aguiar fed Mott on the edge of the area, and he delightfully flicked the ball into the path of the onrushing Lewis Broughton to smash past the helpless Heaps.
Hertfordshire nearly equalised straight from the restart as Showunmi broke away down the left, beat his man and fired a cross hard and low to the back post which just eluded the boot of Keane sliding in.
Sussex held on for the remaining moments to claim all three points, leaving Hertfordshire to ponder what might have been had they taken their chances.
(A selection of photographs can be found on Facebook - courtesy of Simon Roe Photography)
Goals: 2-1; Shots: 17-15; Shots-on-target: 7-11; Corners: 5-3; Fouls: 8-11; Offside: 3-6; Yellow cards: 1-1; Red cards: 0-0.
Sussex: Glover, Moore, Broughton, McCarthy, Malila, Pickering, Jennah, Plummer, Waters, Daly, Sisimayi.
Subs: Mott, Aguiar, Brodie, Williamson, Simmons.
Hertfordshire: Heaps, Wicker, Huckle, Ready, Adams, McClelland, Stead, Walker, Showunmi, Perry, Burton.
Subs: Bakkali, Smith, Keane, Hutchinson, Jeffery.
Match report by Darren Ford