Turbiditet fnu ntu mail

It seems like you're trying to communicate something, but the text is a bit unclear. Could you please rephrase or provide more context so I can better understand what you're trying to say?

From what I can gather, it looks like you might be trying to say something about turbidity and water quality, but the text is a bit jumbled. If that's correct, I'd be happy to help you explore the topic further!