Fig. 7: Impacts of change to WWTF on household water usage.

This figure plots the impact of change to wastewater treatment fee (WWTF) reform on log-transformed daily household water usage. We begin by using data up until one month after reform, and gradually add observations from latter time periods. The dots indicate coefficient size, and the bars represent 95% confidence intervals. The regression models are estimated with daily weather controls (temperature, total precipitation, relative humidity, wind speed, hours of sunlight, and atmospheric pressure), calendar date fixed-effects, and households fixed-effects. Standard errors are clustered two-way at the county, and year-by-month level.