They provide water quality testing services for private and public operators.
Some of these private operators are now moving into other countries to run their reserves.
A small segment of our market has been taken over by private operators.
S7 is one of the largest private operators in Russia.
"As a private operator, we could better shift that cost away from the county back to the state and Federal government," he said.
It was thrown open to private operators in the 1990s.
Can he tell us how many private operators in Scotland have done so?
The rail systems would have to pay for themselves and should be run by private operators, the Administration suggested.
Other private operators also provide services to some towns and cities.
In a number of cases, the hospitals contract these services to private operators.