You can only gather water once you buy the Water Tank upgrade. Without one, water cannot be stored.
There are multiple springs in The Indigo Quarry which are immersed in water. If angled correctly they can provide ten units of water in one go instead of five; five from the spring, five from the water.
1.1.0 - (Undocumented) Collecting water from any harvest node now provides 5 units of water instead of 1.
0.2.5 - Make it easier to collect water from the fresh water springs. In addition, all water visuals are improved.