The 53-year-old man had been trading for at least 10 years and during that time he evaded paying national insurance contributions and income tax to the sum of £91,000.
HMRC has confirmed that a further nine plumbers have been arrested suspected of tax evasion and investigations into their illicit activities are still going on.
The Revenue offered a special disclosure facility to plumbers last year. As a result, David Williams was arrested last September after thousands of pounds in cash was discovered when HMRC investigators visited his home.
HMRC assistant director of criminal investigations, Adrian Farley, said the sentencing was a result of the clamp down on tax evading plumbers, electricians and other tradespeople who do not declare their right earnings and pay the correct amount of taxes.
He went on to explain that tax evaders deprive the UK of vital resources and the Revenue will not hesitate to investigate anybody it suspects is not paying their fair share of tax. He reiterated previous calls for people to inform the Tax Evasion hotline if they think someone is involved in tax evasion.
In court, his Honour Judge Challinor, told Williams that he was squirreling money away driven by greed and he was passing a custodial sentence as a deterrent to others who might be tempted to avoid paying income tax.