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
GuangdongHW:47129	380,000 population served	2010
YunnanHW:47482	379,100 population served	2010
SichuanHW:47343	377,000 population served	2010
ShandongHW:46534	375,500 population served	2010
ShanghaiHW:45733	370,000 population served	2010
JiangsuHW:45854	370,000 population served	2010
HenanHW:46587	370,000 population served	2010
GuangdongHW:47095	370,000 population served	2010
ShaanxiHW:47529	370,000 population served	2010
HenanHW:46638	369,800 population served	2010
JiangsuHW:45762	368,000 population served	2010
SichuanHW:47354	367,700 population served	2010
BeijingHW:45185	364,000 population served	2010
HubeiHW:46726	363,600 population served	2010
HebeiHW:45311	360,000 population served	2010
HebeiHW:45331	360,000 population served	2010
ShanghaiHW:45737	360,000 population served	2010
JiangsuHW:45835	360,000 population served	2010
ZhejiangHW:46148	360,000 population served	2010
JiangxiHW:46355	360,000 population served	2010
ShandongHW:46439	360,000 population served	2010
ShandongHW:46576	360,000 population served	2010
GuangdongHW:46981	360,000 population served	2010
GuangdongHW:47035	360,000 population served	2010
ShaanxiHW:47546	360,000 population served	2010
ShandongHW:46573	358,000 population served	2010
ShandongHW:46516	353,400 population served	2010
SichuanHW:47381	350,800 population served	2010
HebeiHW:45267	350,000 population served	2010
LiaoningHW:45634	350,000 population served	2010
ZhejiangHW:46035	350,000 population served	2010
ZhejiangHW:46138	350,000 population served	2010
AnhuiHW:46194	350,000 population served	2010
FujianHW:46287	350,000 population served	2010
JiangxiHW:46309	350,000 population served	2010
HenanHW:46708	350,000 population served	2010
HubeiHW:46727	350,000 population served	2010
HubeiHW:46784	350,000 population served	2010
HunanHW:46840	350,000 population served	2010
HunanHW:46863	350,000 population served	2010
GuangdongHW:46958	350,000 population served	2010
GuangdongHW:46997	350,000 population served	2010
GuangdongHW:47026	350,000 population served	2010
GuangdongHW:47070	350,000 population served	2010
GuangdongHW:47128	350,000 population served	2010
ChongqingHW:47263	350,000 population served	2010
ChongqingHW:47265	350,000 population served	2010
GansuHW:47567	350,000 population served	2010
Xinjiang UygurHW:47606	350,000 population served	2010
SichuanHW:47377	348,300 population served	2010
Ningxia HuiHW:47597	348,000 population served	2010
JiangsuHW:45901	347,000 population served	2010
SichuanHW:47341	344,500 population served	2010
Xinjiang UygurHW:47608	344,000 population served	2010
GuangxiHW:47154	343,000 population served	2010
GuangxiHW:47155	343,000 population served	2010
ShandongHW:46497	341,000 population served	2010
LiaoningHW:45588	340,000 population served	2010
JiangsuHW:45780	340,000 population served	2010
HenanHW:46661	331,000 population served	2010
LiaoningHW:45583	330,000 population served	2010
LiaoningHW:45644	330,000 population served	2010
JiangsuHW:46000	330,000 population served	2010
JiangxiHW:46368	330,000 population served	2010
GuizhouHW:47408	330,000 population served	2010
GuizhouHW:47437	330,000 population served	2010
AnhuiHW:46226	326,500 population served	2010
AnhuiHW:46166	326,000 population served	2010
ShandongHW:46552	325,000 population served	2010
SichuanHW:47365	323,700 population served	2010
HeilongjiangHW:45703	323,000 population served	2010
BeijingHW:45155	320,000 population served	2010
ShanxiHW:45434	320,000 population served	2010
LiaoningHW:45596	320,000 population served	2010
LiaoningHW:45613	320,000 population served	2010
LiaoningHW:45622	320,000 population served	2010
LiaoningHW:45630	320,000 population served	2010
JilinHW:45677	320,000 population served	2010
ShanghaiHW:45728	320,000 population served	2010
JiangsuHW:45988	320,000 population served	2010
JiangsuHW:46007	320,000 population served	2010
JiangsuHW:46017	320,000 population served	2010
ZhejiangHW:46115	320,000 population served	2010
ZhejiangHW:46140	320,000 population served	2010
ZhejiangHW:46142	320,000 population served	2010
FujianHW:46293	320,000 population served	2010
JiangxiHW:46342	320,000 population served	2010
JiangxiHW:46367	320,000 population served	2010
HubeiHW:46733	320,000 population served	2010
GuangdongHW:46973	320,000 population served	2010
GuangdongHW:47020	320,000 population served	2010
GuangdongHW:47033	320,000 population served	2010
GuangdongHW:47034	320,000 population served	2010
GuangdongHW:47115	320,000 population served	2010
GuangdongHW:47140	320,000 population served	2010
GuangxiHW:47158	320,000 population served	2010
GuangxiHW:47216	320,000 population served	2010
YunnanHW:47448	320,000 population served	2010
GansuHW:47564	320,000 population served	2010
Ningxia HuiHW:47598	320,000 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.