Salt water damage is even more likely to make pumps and valves inoperable in the short term, causing further melting of the already damaged reactor cores.
The only caveat here is that you gotta keep Top Tag-enabled pets from swimming in the ocean: fresh water shouldn't do any damage, but salt water can totally own this device.
Conservative AM for Cardiff North Jonathan Morgan asked for assurance that the salt stocks will be maintained and called for a review of local authorities to see what damage has been made due to the bad weather.