Abstract
The observed two-part tariff price structure (consisting of a lump-sum price and linear marginal price) for drinking water in Germany does not reflect the cost structure reported in the literature. Recovering marginal costs from a sample of 251 German counties, we see that there are positive price-cost margins, while lump-sum prices are too low. A price structure readjustment along welfare economic principles (marginal cost pricing, lump-sum price ensures cost-recovery) would increase the mean consumer surplus by 0.037% of the local GDP or €[Formula: see text]2.129 million per county, assuming a share of 15% variable costs in total costs.
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