Sentence:  The popular classification of wells is, however, into <WSD>"pukka</WSD>" and "kuchcha". Percolation wells are usually <WSD>"pukka</WSD>" or brickbuilt. Spring wells are of three kinds—(1) <WSD>"pukka</WSD>", where the sub-soil to the spring is sandy, and masonry is necessary througout; ... (3) "kuchcha" wells, made of clay throughout. 
Meaning of the word marked with <WSD> tags:  Superior or of high quality; first-class.