'reached unsustainable levels' is a grammatically correct and commonly used phrase in written English.
It can be used when describing a situation or condition that has become unmanageable, unbalanced, or harmful due to excessive growth, usage, or activity. Example: "The demand for natural resources has reached unsustainable levels, causing irreversible damage to the environment."
Financial markets started to anticipate a possible breakup and risk premiums reached unsustainable levels.
J.P. Morgan Australia Securities argues that house prices have reached unsustainable levels.
The Nationwide data stoked the debate about the state of the UK property market and whether it has reached unsustainable levels, particularly in London.
However, it is expected to voice concerns that public sector borrowing in China, mainly by local authorities and state enterprises, has reached unsustainable levels.
In "This Time Is Different," our 2009 history of financial crises over eight centuries, we found that when sovereign debt reached unsustainable levels, so did the cost of borrowing, if it was even possible at all.
Many analysts had become concerned that the value of technology shares had reached unsustainable levels and could be heading for a sharp correction, but the results from the three companies announced after the market closed on Thursday allayed fears of a new dotcom bubble.
Supporters of the policy say it has kept population growth from reaching unsustainable levels.
The premise underlying these claims is that the nation's growing population is reaching unsustainable levels.
Prices ultimately reach unsustainable levels so that when spending slows, the bubble implodes.
The figures are unlikely to quash fears that prices are reaching unsustainable levels in some parts of the country.
Her excitement levels are reaching unsustainable levels, but show no sign of dropping as we begin to labour through some muddy patches.
