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:46485	498,000 population served	2010
GuangdongHW:47002	490,000 population served	2010
GansuHW:47559	489,000 population served	2010
Nei MongolHW:45520	480,000 population served	2010
Nei MongolHW:45544	480,000 population served	2010
HeilongjiangHW:45705	480,000 population served	2010
ShanghaiHW:45743	480,000 population served	2010
ZhejiangHW:46116	480,000 population served	2010
FujianHW:46292	480,000 population served	2010
JiangxiHW:46331	480,000 population served	2010
HubeiHW:46722	480,000 population served	2010
HubeiHW:46732	480,000 population served	2010
HubeiHW:46736	480,000 population served	2010
HunanHW:46889	480,000 population served	2010
GuangdongHW:47090	480,000 population served	2010
HunanHW:46826	474,700 population served	2010
ShanghaiHW:45752	470,000 population served	2010
HenanHW:46671	470,000 population served	2010
YunnanHW:47495	468,800 population served	2010
YunnanHW:47472	466,900 population served	2010
HubeiHW:46779	464,500 population served	2010
LiaoningHW:45573	460,000 population served	2010
JilinHW:45681	460,000 population served	2010
ShanghaiHW:45722	460,000 population served	2010
JiangsuHW:45839	460,000 population served	2010
ZhejiangHW:46043	460,000 population served	2010
ZhejiangHW:46097	460,000 population served	2010
AnhuiHW:46183	460,000 population served	2010
AnhuiHW:46218	460,000 population served	2010
HenanHW:46675	460,000 population served	2010
GuangdongHW:46970	460,000 population served	2010
HebeiHW:45278	459,000 population served	2010
HenanHW:46684	458,700 population served	2010
JiangsuHW:45836	450,000 population served	2010
ZhejiangHW:46156	450,000 population served	2010
ShandongHW:46515	450,000 population served	2010
GuangdongHW:46956	450,000 population served	2010
GuangdongHW:46998	450,000 population served	2010
GuangdongHW:47012	450,000 population served	2010
HeilongjiangHW:45719	447,000 population served	2010
JiangsuHW:45950	445,900 population served	2010
HenanHW:46701	441,000 population served	2010
HebeiHW:45357	438,000 population served	2010
AnhuiHW:46212	430,000 population served	2010
HunanHW:46823	430,000 population served	2010
HunanHW:46933	430,000 population served	2010
GuangdongHW:47147	430,000 population served	2010
Xinjiang UygurHW:47613	430,000 population served	2010
HenanHW:46606	428,000 population served	2010
HubeiHW:46770	423,000 population served	2010
GuangdongHW:47031	423,000 population served	2010
HebeiHW:45341	420,000 population served	2010
HeilongjiangHW:45693	420,000 population served	2010
JiangsuHW:45813	420,000 population served	2010
JiangsuHW:45897	420,000 population served	2010
AnhuiHW:46185	420,000 population served	2010
FujianHW:46274	420,000 population served	2010
ShandongHW:46571	420,000 population served	2010
GuangdongHW:46965	420,000 population served	2010
GuangxiHW:47227	420,000 population served	2010
Xinjiang UygurHW:47618	420,000 population served	2010
JilinHW:45683	413,000 population served	2010
ShandongHW:46468	413,000 population served	2010
ZhejiangHW:46081	410,000 population served	2010
ZhejiangHW:46122	410,000 population served	2010
GuangdongHW:46986	410,000 population served	2010
BeijingHW:45190	400,000 population served	2010
HebeiHW:45368	400,000 population served	2010
LiaoningHW:45589	400,000 population served	2010
JiangsuHW:45761	400,000 population served	2010
JiangsuHW:45779	400,000 population served	2010
JiangsuHW:45800	400,000 population served	2010
ZhejiangHW:46090	400,000 population served	2010
JiangxiHW:46346	400,000 population served	2010
ShandongHW:46455	400,000 population served	2010
ShandongHW:46542	400,000 population served	2010
GuangdongHW:46952	400,000 population served	2010
GuangdongHW:47135	400,000 population served	2010
GuangxiHW:47171	400,000 population served	2010
SichuanHW:47386	396,600 population served	2010
SichuanHW:47390	396,600 population served	2010
HunanHW:46871	394,500 population served	2010
ShandongHW:46383	392,600 population served	2010
JiangsuHW:45882	390,000 population served	2010
GuangdongHW:46987	390,000 population served	2010
GuangdongHW:47008	390,000 population served	2010
YunnanHW:47445	390,000 population served	2010
SichuanHW:47375	389,900 population served	2010
ShandongHW:46461	386,300 population served	2010
GuangxiHW:47202	386,200 population served	2010
Nei MongolHW:45529	385,000 population served	2010
HebeiHW:45252	380,000 population served	2010
Nei MongolHW:45540	380,000 population served	2010
Nei MongolHW:45543	380,000 population served	2010
JiangsuHW:45837	380,000 population served	2010
JiangsuHW:45893	380,000 population served	2010
ZhejiangHW:46104	380,000 population served	2010
HunanHW:46819	380,000 population served	2010
GuangdongHW:47021	380,000 population served	2010
GuangdongHW:47055	380,000 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.