Albion reached their target at the start of the season after grinding out a 0-0 draw at Sunderland as the Baggies hit the 40-point mark.
The Baggies were on the back-foot for most of the game and again failed to muster a single effort on goal.
Baggies boss Tony Pulis praised Albion man of the Ben Foster as the hosts registered 22 attempts at goal.
“I'm pleased. With a few games left to go to get to 40 is first class because we have some tough games coming up.
"It's been an unusual season -when you look at Villa, Newcastle, Sunderland... nobody should ever take anything for granted in this league.
"We got beat by Norwich - that was very disappointing.
"But today we showed resilience even though we should have done a lot better in possession of the ball, especially in the second-half.
"I'm pleased for the football club.
"We're in the Premier League - that's fantastic.”
The game against the Black Cats was Albion’s seventh game this season that the side has failed to fire a single shot on target.
Pulis admitted Albion’s toothless attack was cause for concern.
"Hopefully [in the summer] we'll be able to bring a few players that will give us a little bit more going forward,” he added.
Should Albion be more attacking under Pulis? Have your say at Baggies Banter.