Kozlu(Aşağıçayır) Spa:
It is in Aşağıçayır village of Kozlu, on the way of Zonguldak-Ereğli. Its flow is 10lt/sec, and its temperature is 27C. With its drinking cure, it is curative for stomach, liver, and gall diseases. With its bath cure, thanks to its radioactive minerals, it has a positive effect on painful syndromes. However, there is no resort here.
Bostanbükü Mineral Water:
It is in Safranbolu, and curative for stomach, intestine, and liver diseases.
Karaçayır Spa:
It is in Kozlu district of the city. The water, which is alkaline and soil alkaline, is curative for rheumatism diseases.