"failure to reduce" is correct and usable in written English.
You can use it to indicate that someone was unable to achieve the desired amount of reduction. For example: "The company's failure to reduce its carbon emissions was a major setback."
Yet politicians' failure to reduce deficits has long reflected voters' opposition to the necessary steps.
Riyadh has decried Iranian influence in Iraq, and the US's failure to reduce it, for over a decade.
Yet the model is not only unsustainably expensive but fundamentally weakened by its failure to reduce unemployment.
They have become the scapegoats for Labour's protracted failure to reduce inequality, and the targets of Conservative plans to downsize the welfare state.
"Now the government's only focus is covering their back by passing fines for their own failure to reduce air pollution on to local authorities.
Earlier this month, the UN secretary general, Ban Ki-moon, criticised Iran's president, Hassan Rouhani, for his failure to reduce the country's rate of executions.
May was pressed several times about her own record on immigration given her failure to reduce it to the tens of thousands as promised by the Conservative manifesto.
In 2007, Holdren called America's failure to reduce greenhouse gas emissions "the biggest obstacle to moving forward on the climate issue in the world today".
The utility's misconduct, the court said, included poor staffing decisions and its employees' failure to reduce voltage after lightning hit the electrical system.
Proponents of debt forgiveness argue that the failure to reduce debt is hurting the economy, postponing inevitable losses and costing more in the long run.
She has taken aim at the governor's failure to reduce property taxes and his support for toll roads, but her main message has been a warning that the party cannot stay in power unless it widens its appeal.
