Safe housing in poor and non-poor areas is covered simultaneously and there is no longer a gap. The results of the analysis of water quality pass rate in different regions show a similar trend, that is, the water quality pass rate in poor and non-poor areas has increased year by year, although the water quality pass rate in poor areas is still lower than that in non-poor areas, but the gap between the two types of areas has narrowed significantly, in 2019, there is no obvious gap between the two types of water quality pass rate, the difference is no longer statistically significant (Table 19).
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