Woolworths at Madeley's Kingsway City must cough up $100,000-plus after numerous public health offences.

The conviction will result in a fine of $95,000 and costs of $7000 to Woolworths, which the City of Wanneroo began inspecting in October 2015 after a member of the public complained about their Woolworths brand Crusty Tiger Loaf, which was found to be 'unsuitable for sale'.

"The inspection found that Woolworths were not in compliance with a number of food standard codes," planning and sustainability director Mark Dickson said.

Woolworths was found to have failed to ensure its food handlers were skilled in food safety and food hygiene. It also failed to store food to protect it from contamination, failed to keep the store and its equipment clean and failed to "process only safe and suitable food".