The proposal is expected to face a litany of legal challenges before November’s election. It would add millions of dollars in fees to the region’s largest water users, including ExxonMobil, Occidental Chemical and Valero, the next time reservoir levels are below 30 percent full, like they were for 29 months until early August. Community and environmental groups gathered nearly 13,000 signatures of registered voters to get their proposal on the ballot.

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The Fair Water Amendment would implement a 70 percent water rate increase for Corpus Christi’s largest industrial water users when reservoirs dip below 30 percent capacity. It would implement an increase of 140 percent when reservoirs dip below 20 percent, and a 280 percent increase if the city declares a water emergency.