Mineral water intakes are located in the area of Iwonicz Zdrój and Rymanów. Mineral waters may be of various origin. They develop from rainwaters, percolating rocks and enriching in the washed out mineral compounds, or from connate, salty sea waters flowing out from the depths of the earth. Areas of Iwonicz Zdrój and Rymanów include chloride and sodium carbonated waters, occasionally ferruginous and with iodine and bromine ions.
Sip of water from a several million years old ocean. The salty, strongly mineralized chloride waters are the connate waters of the ancient Tethys Ocean. They are found in Rudawka Rymanowska, Iwonicz-Zdrój and Rymanów-Zdrój.
The “Bełkotka” spring in Iwonicz-Zdrój also shows a natural gas outflow. Gas escapes from fissured rocks to water where it forms bubbles, hence the name of the spring. In the 19th century, gas outflow was so intensive that gave a three feet high flame after setting fire. The “Bulgotka” spring in Rudawka Rymanowska shows a gas outflow as well.