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
ZhejiangHW:46147	110,000 population served	2010
AnhuiHW:46230	110,000 population served	2010
FujianHW:46242	110,000 population served	2010
JiangxiHW:46327	110,000 population served	2010
ShandongHW:46423	110,000 population served	2010
ShandongHW:46431	110,000 population served	2010
ShandongHW:46456	110,000 population served	2010
ShandongHW:46503	110,000 population served	2010
ShandongHW:46575	110,000 population served	2010
HenanHW:46651	110,000 population served	2010
HunanHW:46830	110,000 population served	2010
HunanHW:46928	110,000 population served	2010
GuangdongHW:46993	110,000 population served	2010
GuangdongHW:47108	110,000 population served	2010
GuangdongHW:47121	110,000 population served	2010
ChongqingHW:47266	110,000 population served	2010
ChongqingHW:47270	110,000 population served	2010
ChongqingHW:47273	110,000 population served	2010
YunnanHW:47475	110,000 population served	2010
ShaanxiHW:47523	110,000 population served	2010
HenanHW:46710	109,700 population served	2010
ShandongHW:46531	109,300 population served	2010
JilinHW:45667	109,000 population served	2010
SichuanHW:47364	108,700 population served	2010
YunnanHW:47469	108,700 population served	2010
ShanxiHW:45459	108,000 population served	2010
HenanHW:46705	108,000 population served	2010
HunanHW:46903	108,000 population served	2010
GuangxiHW:47198	108,000 population served	2010
Nei MongolHW:45524	107,000 population served	2010
SichuanHW:47374	107,000 population served	2010
HenanHW:46583	106,500 population served	2010
HenanHW:46645	106,000 population served	2010
HenanHW:46709	106,000 population served	2010
HunanHW:46925	106,000 population served	2010
Nei MongolHW:45506	105,000 population served	2010
JilinHW:45678	105,000 population served	2010
HunanHW:46868	105,000 population served	2010
GuangxiHW:47222	105,000 population served	2010
GuizhouHW:47405	105,000 population served	2010
JiangsuHW:45807	104,600 population served	2010
YunnanHW:47488	104,200 population served	2010
HebeiHW:45345	104,000 population served	2010
HeilongjiangHW:45712	104,000 population served	2010
JiangxiHW:46350	104,000 population served	2010
HenanHW:46706	104,000 population served	2010
HebeiHW:45361	103,000 population served	2010
HebeiHW:45369	103,000 population served	2010
GuangxiHW:47233	103,000 population served	2010
HunanHW:46845	102,000 population served	2010
HebeiHW:45362	101,100 population served	2010
LiaoningHW:45621	101,000 population served	2010
ShanxiHW:45442	100,800 population served	2010
BeijingHW:45152	100,000 population served	2010
BeijingHW:45161	100,000 population served	2010
BeijingHW:45171	100,000 population served	2010
BeijingHW:45182	100,000 population served	2010
TianjinHW:45196	100,000 population served	2010
TianjinHW:45200	100,000 population served	2010
TianjinHW:45210	100,000 population served	2010
HebeiHW:45248	100,000 population served	2010
HebeiHW:45249	100,000 population served	2010
HebeiHW:45293	100,000 population served	2010
Nei MongolHW:45517	100,000 population served	2010
Nei MongolHW:45528	100,000 population served	2010
Nei MongolHW:45548	100,000 population served	2010
LiaoningHW:45559	100,000 population served	2010
LiaoningHW:45576	100,000 population served	2010
LiaoningHW:45604	100,000 population served	2010
LiaoningHW:45614	100,000 population served	2010
LiaoningHW:45627	100,000 population served	2010
HeilongjiangHW:45709	100,000 population served	2010
ShanghaiHW:45745	100,000 population served	2010
JiangsuHW:45788	100,000 population served	2010
JiangsuHW:45789	100,000 population served	2010
JiangsuHW:45792	100,000 population served	2010
JiangsuHW:46002	100,000 population served	2010
ZhejiangHW:46031	100,000 population served	2010
ZhejiangHW:46034	100,000 population served	2010
ZhejiangHW:46044	100,000 population served	2010
ZhejiangHW:46053	100,000 population served	2010
ZhejiangHW:46094	100,000 population served	2010
ZhejiangHW:46134	100,000 population served	2010
ZhejiangHW:46135	100,000 population served	2010
AnhuiHW:46178	100,000 population served	2010
AnhuiHW:46216	100,000 population served	2010
AnhuiHW:46239	100,000 population served	2010
FujianHW:46256	100,000 population served	2010
JiangxiHW:46353	100,000 population served	2010
ShandongHW:46391	100,000 population served	2010
ShandongHW:46396	100,000 population served	2010
ShandongHW:46404	100,000 population served	2010
ShandongHW:46408	100,000 population served	2010
ShandongHW:46422	100,000 population served	2010
ShandongHW:46499	100,000 population served	2010
HenanHW:46672	100,000 population served	2010
HubeiHW:46731	100,000 population served	2010
HubeiHW:46739	100,000 population served	2010
HubeiHW:46772	100,000 population served	2010
HubeiHW:46778	100,000 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.