"in safe waters" is correct and usable in written English.
It is typically used to describe a situation in which one is protected from danger or harm. For example, "When the storm passed, we finally found ourselves in safe waters."
Initial analysis suggested tactical voting was to blame for the CDU's 6.5% drop in support, as 100,000 CDU voters believing their party to be in safe waters, chose to place their votes with the FDP instead to prevent it from disappearing from the political scene altogether and leading to the end of the coalition.
If you think rugby shirts and khaki pants look good, you're in safe waters.
Whether set locally, nationally, or internationally, government standards typically set maximum concentrations of harmful contaminants that can be allowed in safe water.
Meanwhile, disinfection process is one of the most important steps in safe water production.
According to WHO analysis, an additional $11 billion invested in safe water and sanitation globally would have an economic benefit of $84 billion.
Two fathoms -- "mark twain" was to be in safe water -- which had to be a good feeling for steamboatmen like Sam Clemens.
Those not either caught in the toxic mixture and killed out at sea, or fortunate enough to be out in safe water beyond the Source, died as the water closed in, and they were left no safe harbor.
UNICEF says increased investment in safe water will accelerate Cambodia's economic and social development.
These problems point to the need for greater awareness of – and investment in – safe water and sanitation in DR Congo.
It has trucked in safe water, provided water treatment tablets, oral rehydration salts and cholera treatment centres.
"An investment in safe water and sanitation for homes and schools can be a key factor in reducing child mortality".
