Lino verdenė replenishes Sėtikis with almost six liters of fresh spring water every second. About 500 m³ of drinking water a day is "boiled" here. The source discharges from sand and gravel. The stream water of Lino verdenė is fresh, has relatively few minerals (421mg / l). Iron concentration is 0.1 mg / l. As long as the temperature of the stream water remains above zero and reaches about 8 ° C the water in the pool will never freeze.