If you are seeking methods that do not require laboratory conditions you might look at 'standard' methods used until the early 1960s. However, you will not like the complexity or the high labour input. Oceanographers have methods that operate more or less independently.
Now a days various water testing kits are available with which you will be able to analyse almost all the parameters cited by you, if not all, outside the laboratory.However, accuracy level may be a factor.
I'm not Indian citizen ,but the knowledge is not require territory ,Please share the kit with procedures ,methods and othet related requirements about kit ,becuase when ask this question not only my country (just as world level).