Nonsense. Let me introduce you to the town I was born in. Richland WA.

"...A huge volume of water from the Columbia River was required to dissipate the heat produced by Hanford's nuclear reactors. From 1944 to 1971, pump systems drew cooling water from the river and, after treating this water for use by the reactors, returned it to the river. Before being released back into the river, the used water was held in large tanks known as retention basins for up to six hours. Longer-lived isotopes were not affected by this retention, and several terabecquerels entered the river every day. By 1957, the eight plutonium production reactors at Hanford dumped a daily average of 50,000 curies (1,900 TBq) of radioactive material into the Columbia.[46] These releases were kept secret by the federal government.[4] Radiation was later measured downstream as far west as the Washington and Oregon coasts.[47]

The plutonium separation process also resulted in the release of radioactive isotopes into the air, which were carried by the wind throughout southeastern Washington and into parts of Idaho, Montana, Oregon, and British Columbia.[4] Downwinders were exposed to radionuclides, particularly iodine-131, with the heaviest releases during the period from 1945 to 1951. These radionuclides filtered into the food chain via contaminated fields where dairy cows grazed; hazardous fallout was ingested by communities who consumed the radioactive food and drank the milk. Most of these airborne releases were a part of Hanford's routine operations, while a few of the larger releases occurred in isolated incidents. In 1949, an intentional release known as the "Green Run" released 8,000 curies of iodine-131 over two days.[48] Another source of contaminated food came from Columbia River fish, an impact felt disproportionately by Native American communities who depended on the river for their customary diets....While major releases of radioactive material ended with the reactor shutdown in the 1970s, parts of the Hanford Site remain heavily contaminated. Many of the most dangerous wastes are contained, but there are concerns about contaminated groundwater headed toward the Columbia River. There are also continued concerns about workers' health and safety.[53]

The most significant challenge at Hanford is stabilizing the 53 million U.S. gallons (204,000 m3) of high-level radioactive waste stored in 177 underground tanks. About a third of these tanks have leaked waste into the soil and groundwater.[54] As of 2008[update], most of the liquid waste has been transferred to more secure double-shelled tanks; however, 2.8 million U.S. gallons (10,600 m3) of liquid waste, together with 27 million U.S. gallons (100,000 m3) of salt cake and sludge, remains in the single-shelled tanks.[5] That waste was originally scheduled to be removed by 2018. The revised deadline is 2040.[53] Nearby aquifers contain an estimated 270 billion U.S. gallons (1 billion m3) of contaminated groundwater as a result of the leaks.[55] As of 2008[update], 1 million U.S. gallons (4,000 m3) of highly radioactive waste is traveling through the groundwater toward the Columbia River. This waste is expected to reach the river in 12 to 50 years if cleanup does not proceed on schedule.[5] The site also includes 25 million cubic feet (710,000 m3) of solid radioactive waste...."

http://en.wikipedia.org/wiki/Hanford_Site

The only part of nuclear power that is "solved" is the part where politicians figured out there is less uproar if they classify accidents as state secrets until decades have passed and and the victims are dying of weird cancers.