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
HebeiHW:45403	39,600 population served	2010
HenanHW:46628	39,100 population served	2010
ShanxiHW:45477	39,000 population served	2010
ShanxiHW:45491	39,000 population served	2010
HunanHW:46862	38,900 population served	2010
SichuanHW:47327	38,900 population served	2010
SichuanHW:47331	38,800 population served	2010
ShandongHW:46533	38,600 population served	2010
SichuanHW:47313	38,600 population served	2010
ShaanxiHW:47549	38,500 population served	2010
ShanxiHW:45485	38,000 population served	2010
Nei MongolHW:45523	38,000 population served	2010
Nei MongolHW:45555	38,000 population served	2010
JiangsuHW:45904	38,000 population served	2010
ZhejiangHW:46071	38,000 population served	2010
FujianHW:46295	38,000 population served	2010
ShandongHW:46480	38,000 population served	2010
HenanHW:46670	38,000 population served	2010
HubeiHW:46767	38,000 population served	2010
GuangdongHW:47022	38,000 population served	2010
GuangxiHW:47172	38,000 population served	2010
GuangxiHW:47195	38,000 population served	2010
HainanHW:47245	38,000 population served	2010
YunnanHW:47459	38,000 population served	2010
ShaanxiHW:47543	38,000 population served	2010
SichuanHW:47387	37,800 population served	2010
Nei MongolHW:45553	37,200 population served	2010
GansuHW:47565	36,900 population served	2010
ShanxiHW:45438	36,800 population served	2010
ShaanxiHW:47550	36,800 population served	2010
SichuanHW:47317	36,500 population served	2010
GuizhouHW:47415	36,500 population served	2010
ShanxiHW:45488	36,400 population served	2010
ShanxiHW:45489	36,400 population served	2010
SichuanHW:47334	36,200 population served	2010
SichuanHW:47332	36,100 population served	2010
HebeiHW:45277	36,000 population served	2010
HebeiHW:45283	36,000 population served	2010
HebeiHW:45329	36,000 population served	2010
LiaoningHW:45577	36,000 population served	2010
ShandongHW:46465	36,000 population served	2010
GuangxiHW:47184	36,000 population served	2010
YunnanHW:47463	36,000 population served	2010
GansuHW:47570	35,600 population served	2010
ShanxiHW:45448	35,500 population served	2010
ShaanxiHW:47552	35,500 population served	2010
BeijingHW:45170	35,000 population served	2010
BeijingHW:45177	35,000 population served	2010
HebeiHW:45402	35,000 population served	2010
LiaoningHW:45606	35,000 population served	2010
HeilongjiangHW:45701	35,000 population served	2010
JiangsuHW:45999	35,000 population served	2010
FujianHW:46296	35,000 population served	2010
GuangdongHW:47024	35,000 population served	2010
GuangxiHW:47194	35,000 population served	2010
YunnanHW:47493	35,000 population served	2010
ShaanxiHW:47530	35,000 population served	2010
SichuanHW:47330	34,600 population served	2010
ShaanxiHW:47515	34,100 population served	2010
JiangsuHW:45862	34,000 population served	2010
ShaanxiHW:47532	34,000 population served	2010
ShaanxiHW:47553	34,000 population served	2010
SichuanHW:47347	33,700 population served	2010
ShaanxiHW:47542	33,500 population served	2010
JiangsuHW:45948	33,100 population served	2010
ShanxiHW:45435	33,000 population served	2010
Nei MongolHW:45514	33,000 population served	2010
JiangsuHW:45786	33,000 population served	2010
HubeiHW:46777	33,000 population served	2010
HebeiHW:45382	32,800 population served	2010
HebeiHW:45349	32,500 population served	2010
ShandongHW:46532	32,100 population served	2010
SichuanHW:47356	32,100 population served	2010
HebeiHW:45378	32,000 population served	2010
JiangsuHW:45790	32,000 population served	2010
JiangsuHW:45833	32,000 population served	2010
ZhejiangHW:46082	32,000 population served	2010
ZhejiangHW:46113	32,000 population served	2010
ShandongHW:46489	32,000 population served	2010
HenanHW:46681	32,000 population served	2010
GuangdongHW:47011	32,000 population served	2010
ShaanxiHW:47536	32,000 population served	2010
ShanxiHW:45470	31,500 population served	2010
Ningxia HuiHW:47602	31,100 population served	2010
HebeiHW:45392	31,000 population served	2010
JilinHW:45647	31,000 population served	2010
HeilongjiangHW:45695	31,000 population served	2010
JiangsuHW:45782	31,000 population served	2010
JiangsuHW:45842	31,000 population served	2010
JiangsuHW:45863	31,000 population served	2010
JiangsuHW:45888	31,000 population served	2010
JiangsuHW:45916	31,000 population served	2010
SichuanHW:47389	30,400 population served	2010
ShanxiHW:45440	30,300 population served	2010
BeijingHW:45189	30,000 population served	2010
BeijingHW:45194	30,000 population served	2010
HebeiHW:45343	30,000 population served	2010
HebeiHW:45352	30,000 population served	2010
HebeiHW:45393	30,000 population served	2010
Nei MongolHW:45526	30,000 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.