Prayer to water at the time of upasana to sandhya.

आपो वा इदग्ँ सर्वं विश्वाभूतान्यापः
प्राणा वा आपः पशवः आपः अन्नमापः।
अमृतमापः च्छन्दाग्ँस्याप ज्योतीग्ँष्याप
यजूग्ँष्याप सत्यमाप सर्वा देवता आपः॥
ॐ भूर्भुवस्सुवराप ॐ श्री केशवाय नमः

āpo vā idaglm sarvaṁ viśvābhūtānyāpaḥ
prāṇā vā āpaḥ paśavaḥ āpaḥ annamāpaḥ|
amṛtamāpaḥ cchandāgmsyāpa jyotīgmṣyāpa
yajūgmṣyāpa satyamāpa sarvā devatā āpaḥ ||
om bhūrbhuvassuvarāpa om śrī keśavāya namaḥ

All that is found in this world has origin in water, whatever is manifest as universe is water, water is the life-breath in us , all living beings are manifested in water, food is emanating from water, water is ambrosia (nectar) , water forms the vedas (chandaas) , water is the energy found in  light, water is the yajus,  water is the truth, all gods are manifested in water--
Om, I invoke water in the three worlds bhoo, bhuva and suvaH... OM I prostrate before the God with copious hair, Kesava, the Krishna

Prayer to water at the time of upasana to sandhya.