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. Author manuscript; available in PMC: 2021 Feb 15.
Published in final edited form as: J Hazard Mater. 2019 Sep 24;384:121306. doi: 10.1016/j.jhazmat.2019.121306

Table 1.

Population in WWTP catchments.

Communities Census
Population* 		NH4-N (mg/d)** NH4-N-based
Population**
Urban A 190,000 13.1 ± 1.2 189,335 ± 12,757
Urban B 150,000 14.1 ± 1.6 157,796 ± 20,187
Rural 20,000 9.82 ± 0.34 21,835 ± 1742
*

provided by the WWTP operators

**

average ± standard error.