When working as intended, no, no phase of the nuclear fuel cycle does that. However, if there is a meltdown or the spent fuel rod pond ever runs out of water, then things become hot enough to burn, vaporize or deflagrate and vast plumes of radioactive material are free to wander the countryside.
PV used to heat water? The owner was doing it wrong. Vacuum tube solar heaters (direct solar-to-heat conversion) are the hot water sources of the gods. These things are amazing; I've seen an array output hot water under half an inch of snow just from the light that was filtering through. If all you want is dangerously hot showers then this is the technology for you.I am skeptical. If one rooftop solar array can barely provide enough energy to power one's water heater, then how can millions of solar arrays on millions of houses heat more than millions of water heaters? I do believe someone violated conservation of energy somewhere down line.
However, there are limits. Making things hot using sunlight is easy, but making them cool is difficult. We will never easily power all our AC compressors with solar. Getting around this problem requires either clever engineering or just giving up on AC entirely and designing a home with absurdly thick walls and good airflow so you can live in a hot climate without AC.
If you can solve heating and cooling needs, then leftover energy demands (computers, CFL lighting, large televisions, microwaves) are satisfiable with a couple of meters of PV paneling.