Thanks Ray! We’ll ask about this, but our understanding is that since Wells4Wellness’ wells are deep and pulling from an aquifer, they shouldn’t be contaminated.
But the point about post-source contamination is a good one! That’s why we switched from just taking GiveWell’s chlorination numbers in our first post, to attempting to use well-specific numbers in this post. Unfortunately it was quite hard to find well-specific numbers, so it’s a bit of a guessing game for now. But we are seeing that Wells4Wellness is cheaper than chlorination, so it can still be the case that chlorination has a larger impact, but Wells4Wellness is as or more effective per dollar
Thanks Ray! We’ll ask about this, but our understanding is that since Wells4Wellness’ wells are deep and pulling from an aquifer, they shouldn’t be contaminated.
But the point about post-source contamination is a good one! That’s why we switched from just taking GiveWell’s chlorination numbers in our first post, to attempting to use well-specific numbers in this post. Unfortunately it was quite hard to find well-specific numbers, so it’s a bit of a guessing game for now. But we are seeing that Wells4Wellness is cheaper than chlorination, so it can still be the case that chlorination has a larger impact, but Wells4Wellness is as or more effective per dollar