Measure water into a measuring jug.
Pour half of the water into a medium-sized pot. Add sugar into the pot and turn on the heat to a low flame.
Stir to dissolve the sugar. Turn of the heat and add the remaining water. Set aside.
Roll lemons on your kitchen counter to soften the pulp inside. Cut each lemon into 2 and squeeze the juice. Strain to remove pulps and seeds and measure.
Add the measured lemon juice into the sugar syrup solution and mix well.
Pour the lemonade solution into prepared popsicle molds. Cover and freeze for at least 6 hours. Overnight freezing is better.
To unmold the popsicles, dip the mold in a pot filled with water. The water level should not be above the mold cover, to avoid water getting into the frozen popsicles.
Leave the mold in the water for about 30 seconds. Remove the popsicles by holding the stick and pulling them upwards, vertically. Keep the mold in the water a little longer if the popsicles are still stuck to the mold.