In 1973, Mexico worried U.S. would slip radioactive waste into Colorado River drain water?

Minute 242, an addenda to the U.S.-Mexico Colorado River Treaty, (pdf) contemplated construction of a drain to safely carry high salinity U.S. drainage past municipal and agricultural intakes and dump it into a slough near the Sea of Cortez.

It was a time of tension between the two countries over the salinity issue. (Evan Ward’s Border Oasis¬†tells the tale.) How tense? It is fascinating to imagine the back story that left Mexico to feel this language needed to be included in the 1973 agreement:

It is understood that no radioactive material or nuclear wastes shall be discharged through this drain.

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