Wastewater treatment plants in China: 2,486 WWTPs with capacity and treatment

World wastewater treatment plant observatory · data as reported by each inventory

Name	Native size	Year
ShandongHW:46572	696,000 population served	2010
ShanghaiHW:45755	694,000 population served	2010
YunnanHW:47446	694,000 population served	2010
ShanghaiHW:45723	690,000 population served	2010
AnhuiHW:46177	680,000 population served	2010
ShanghaiHW:45730	670,000 population served	2010
GuangdongHW:47118	670,000 population served	2010
HenanHW:46627	669,000 population served	2010
SichuanHW:47368	669,000 population served	2010
HeilongjiangHW:45698	660,000 population served	2010
HebeiHW:45234	650,000 population served	2010
GuangdongHW:47105	650,000 population served	2010
GuangxiHW:47217	650,000 population served	2010
ShaanxiHW:47517	650,000 population served	2010
ShaanxiHW:47539	650,000 population served	2010
HenanHW:46655	646,000 population served	2010
JiangsuHW:45969	640,000 population served	2010
AnhuiHW:46235	640,000 population served	2010
Nei MongolHW:45502	630,000 population served	2010
QinghaiHW:47579	630,000 population served	2010
GansuHW:47558	628,000 population served	2010
ZhejiangHW:46145	625,000 population served	2010
JiangxiHW:46358	620,000 population served	2010
HunanHW:46935	620,000 population served	2010
GuangdongHW:47051	620,000 population served	2010
GuangdongHW:47092	620,000 population served	2010
GuangdongHW:47096	620,000 population served	2010
GuangdongHW:47117	620,000 population served	2010
ShandongHW:46448	610,000 population served	2010
SichuanHW:47325	610,000 population served	2010
YunnanHW:47443	610,000 population served	2010
LiaoningHW:45567	600,000 population served	2010
LiaoningHW:45612	600,000 population served	2010
JilinHW:45650	600,000 population served	2010
JiangsuHW:45772	600,000 population served	2010
JiangsuHW:45774	600,000 population served	2010
ShandongHW:46394	600,000 population served	2010
HunanHW:46880	600,000 population served	2010
ShaanxiHW:47498	600,000 population served	2010
ShaanxiHW:47499	600,000 population served	2010
ShanghaiHW:45754	599,000 population served	2010
YunnanHW:47442	589,000 population served	2010
HubeiHW:46807	586,400 population served	2010
ShandongHW:46407	580,000 population served	2010
GuangdongHW:47003	580,000 population served	2010
GuangdongHW:47069	580,000 population served	2010
YunnanHW:47480	580,000 population served	2010
SichuanHW:47399	577,800 population served	2010
ZhejiangHW:46069	560,000 population served	2010
FujianHW:46253	560,000 population served	2010
HubeiHW:46724	560,000 population served	2010
HunanHW:46822	560,000 population served	2010
ShandongHW:46486	558,900 population served	2010
JiangsuHW:45936	553,000 population served	2010
LiaoningHW:45623	550,000 population served	2010
ShandongHW:46510	550,000 population served	2010
Ningxia HuiHW:47590	550,000 population served	2010
SichuanHW:47359	543,900 population served	2010
ShanghaiHW:45727	540,000 population served	2010
HenanHW:46621	540,000 population served	2010
HenanHW:46686	540,000 population served	2010
GuangdongHW:47104	540,000 population served	2010
SichuanHW:47335	540,000 population served	2010
SichuanHW:47362	539,100 population served	2010
ShanghaiHW:45721	530,600 population served	2010
LiaoningHW:45601	530,000 population served	2010
ShandongHW:46412	530,000 population served	2010
ShandongHW:46509	530,000 population served	2010
GuangxiHW:47237	530,000 population served	2010
ShaanxiHW:47540	530,000 population served	2010
ZhejiangHW:46124	520,000 population served	2010
FujianHW:46243	520,000 population served	2010
FujianHW:46291	520,000 population served	2010
ShandongHW:46437	520,000 population served	2010
GuangdongHW:47148	520,000 population served	2010
YunnanHW:47492	520,000 population served	2010
HenanHW:46594	519,000 population served	2010
HenanHW:46618	517,200 population served	2010
HunanHW:46915	513,000 population served	2010
JilinHW:45672	511,000 population served	2010
ShanxiHW:45472	510,000 population served	2010
Nei MongolHW:45508	510,000 population served	2010
JiangsuHW:46019	510,000 population served	2010
FujianHW:46299	510,000 population served	2010
JiangxiHW:46362	510,000 population served	2010
ShandongHW:46445	510,000 population served	2010
ShanxiHW:45490	506,400 population served	2010
TianjinHW:45204	500,000 population served	2010
HebeiHW:45243	500,000 population served	2010
Nei MongolHW:45558	500,000 population served	2010
LiaoningHW:45599	500,000 population served	2010
JiangsuHW:46013	500,000 population served	2010
JiangxiHW:46345	500,000 population served	2010
ShandongHW:46564	500,000 population served	2010
HunanHW:46921	500,000 population served	2010
HunanHW:46936	500,000 population served	2010
GuangdongHW:46947	500,000 population served	2010
GuangdongHW:47091	500,000 population served	2010
GuangdongHW:47125	500,000 population served	2010
GuangdongHW:46963	499,600 population served	2010

Regulatory context

Partial review. This is not an exhaustive review of applicable law.

China: GB 18918-2002 and the 2025 amendment

Partial documentary review; human legal review pending. MEE announcement 2025 No. 24 modifies GB 18918-2002 and states application from 2026-03-01; it is not a renumbered standard. The annex provides a transition from 2028-01-01 for construction cohorts defined in its tables, which is neither brought forward to 2026 nor generalized to all plants. Territorial scope, effluent destination, classes and permit require review; a HydroWASTE label does not assign a legal class.

Confirm the scope of GB 18918, provincial rules and the individual permit.
Distinguish instantaneous values from averages; verify sampling point and the standard version applicable to the date.
Do not assess a historical inventory against 2026 limits without measurements from the relevant period.
Separate application from 2026-03-01 from the 2028 transition for specific cohorts; no dates, values or rules are assigned here to a facility.

MEE · anuncio 2025 n.º24: modificación GB 18918-2002Legal text · CN; alcance concreto pendiente
MEE · explicación oficial de la modificación, 2026-01-07Official guidance · CN; interpretación oficial de alcance general
MEE · anexo de modificación de GB 18918-2002, apartados I/III/V/VILegal text · Texto de modificación y transición por cohortes; sin valores ni asignación individual

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.