Here's what you need to know for dealing with tadpoles yourself. First you'll need a suitable container, like an aquarium, fishbowl, plastic garbage bin, paddling pool, or garden pond. The fallen needles and leaves can be toxic to tadpoles.
Tadpoles absolutely depend on having fresh, clean water.
If you take the water from a local stream, creek or pond, be sure it isn't polluted. Ideally, you can get it upstream from any suspected sources like factories, sewers, etc. If using tap water, let it stand exposed to full sunlight for 5 to 7 days. This will allow the Chlorine to be removed by evaporation. But at least leave the water out overnight, even after using the droplets.