Question

lab: parts per million
setting water quality standards improved water quality. however, what was a negative effect of water quality standards?
water rationing
the price of water went up

Explanation:

To determine the negative effect of water quality standards, we analyze the options. Implementing water quality standards often involves costs for treatment, infrastructure, etc. These costs are passed on, leading to a rise in water prices. Water rationing is more related to scarcity, not directly a negative effect of quality standards. So the price of water going up is a likely negative effect.

Answer:

The price of water went up