Water sieve cleans to water with a constant temperature

It appears that when Water Sieve cleans polluted water to (clean) water, the temperature of the output water is a constant 40 deg. Celsius. See the attached save, where one sieve takes water at about 32., the other at about 44, and the output is 40 in both cases. This applies only to polluted water, clean water is unaffected.

This is really annoying as this adds huge amount of heat to the base when trying to clean up normal polluted water. As shown in the save, it can be also exploited to cool down water that's been heated up by the Water Tepidizer.

bug3.sav