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

Wastewater treatment plants in Switzerland

705 inventory records · European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública)

Data years: 2022. The inventory date does not establish current operation.

705 results

Name	Native size	Year
CHAVORNAYCH_WWTP_574900	8,500 population equivalent (p.e.)	2022
OBERES SIHLTALCH_WWTP_130103	8,500 population equivalent (p.e.)	2022
SaillonCH_WWTP_614000	8,483 population equivalent (p.e.)	2022
DUERNTEN(BUBIKON)CH_WWTP_011301	8,400 population equivalent (p.e.)	2022
TujetschCH_WWTP_398601	8,350 population equivalent (p.e.)	2022
StaldenCH_WWTP_629300	8,250 population equivalent (p.e.)	2022
BenkenCH_WWTP_331202	8,000 population equivalent (p.e.)	2022
HERGISWIL(LOPPER)CH_WWTP_150700	8,000 population equivalent (p.e.)	2022
ZuzwilCH_WWTP_342600	7,883 population equivalent (p.e.)	2022
OTELFINGENCH_WWTP_009401	7,700 population equivalent (p.e.)	2022
Port-ValaisCH_WWTP_615400	7,700 population equivalent (p.e.)	2022
BRIENZCH_WWTP_057300	7,600 population equivalent (p.e.)	2022
ORMONT-DESSUS LES DIABLERETSCH_WWTP_541100	7,500 population equivalent (p.e.)	2022
JonschwilCH_WWTP_340500	7,500 population equivalent (p.e.)	2022
VALLORBECH_WWTP_576400	7,500 population equivalent (p.e.)	2022
CHATEAU-D'OEXCH_WWTP_584101	7,500 population equivalent (p.e.)	2022
LeytronCH_WWTP_613500	7,500 population equivalent (p.e.)	2022
TRAMELANCH_WWTP_044600	7,500 population equivalent (p.e.)	2022
Collombey-MurazCH_WWTP_615201	7,500 population equivalent (p.e.)	2022
ST-AUBINCH_WWTP_641401	7,500 population equivalent (p.e.)	2022
Luzein (Dalvazza)CH_WWTP_389101	7,250 population equivalent (p.e.)	2022
Breil/Brigels (Sorts)CH_WWTP_398101	7,250 population equivalent (p.e.)	2022
MAURCH_WWTP_019501	7,200 population equivalent (p.e.)	2022
Obersaxen Mundaun (Valata)CH_WWTP_398801	7,116 population equivalent (p.e.)	2022
WILLISDORF(DIESSENHOFEN)CH_WWTP_454200	7,000 population equivalent (p.e.)	2022
KNONAUCH_WWTP_000701	7,000 population equivalent (p.e.)	2022
OBFELDENCH_WWTP_001001	7,000 population equivalent (p.e.)	2022
STAEFA/UERIKONCH_WWTP_015802	7,000 population equivalent (p.e.)	2022
SELZACHCH_WWTP_255600	6,900 population equivalent (p.e.)	2022
GRANDSONCH_WWTP_556100	6,875 population equivalent (p.e.)	2022
KLEINDOETTIGENCH_WWTP_430300	6,652 population equivalent (p.e.)	2022
COURT(SECOR)CH_WWTP_069000	6,600 population equivalent (p.e.)	2022
TRAVERSCH_WWTP_651000	6,600 population equivalent (p.e.)	2022
FULENBACH(AAREGAEU)CH_WWTP_257500	6,500 population equivalent (p.e.)	2022
Trun (Zavragia)CH_WWTP_398701	6,500 population equivalent (p.e.)	2022
BRETIGNY-SUR-MORRENSCH_WWTP_551500	6,500 population equivalent (p.e.)	2022
WUERENLINGENCH_WWTP_404700	6,301 population equivalent (p.e.)	2022
AVENCHESCH_WWTP_545100	6,260 population equivalent (p.e.)	2022
GRYONCH_WWTP_540500	6,250 population equivalent (p.e.)	2022
CULLYCH_WWTP_560200	6,250 population equivalent (p.e.)	2022
MAERSTETTENCH_WWTP_494100	6,200 population equivalent (p.e.)	2022
BIERECH_WWTP_542500	6,125 population equivalent (p.e.)	2022
BERLINGEN(UNTERSEE)CH_WWTP_480100	6,100 population equivalent (p.e.)	2022
Nesslau-RechenwaidCH_WWTP_335400	6,000 population equivalent (p.e.)	2022
EvolèneCH_WWTP_608300	6,000 population equivalent (p.e.)	2022
Briggmatte-RandaCH_WWTP_628700	6,000 population equivalent (p.e.)	2022
RUDOLFSTETTENCH_WWTP_407500	5,951 population equivalent (p.e.)	2022
St-NiklausCH_WWTP_629200	5,875 population equivalent (p.e.)	2022
Kläranlage RuswilCH_WWTP_109800	5,825 population equivalent (p.e.)	2022
DELLEY-PORTALBAN (AIEE)CH_WWTP_201200	5,626 population equivalent (p.e.)	2022
PFYNCH_WWTP_483700	5,500 population equivalent (p.e.)	2022
AiroloCH_WWTP_506101	5,440 population equivalent (p.e.)	2022
CHLOSTERMATTECH_WWTP_422900	5,423 population equivalent (p.e.)	2022
URNAESCH(FURT)CH_WWTP_300600	5,400 population equivalent (p.e.)	2022
GamsCH_WWTP_327200	5,383 population equivalent (p.e.)	2022
MUOTATHALCH_WWTP_136700	5,200 population equivalent (p.e.)	2022
STECKBORNCH_WWTP_486400	5,100 population equivalent (p.e.)	2022
Zillis-Reischen (Val Schons)CH_WWTP_371201	5,000 population equivalent (p.e.)	2022
BELLERIVECH_WWTP_545200	5,000 population equivalent (p.e.)	2022
LA SARRAZCH_WWTP_549800	5,000 population equivalent (p.e.)	2022
Albula/Alvra (Tiefencastel)CH_WWTP_354203	5,000 population equivalent (p.e.)	2022
FLAACHTALCH_WWTP_002801	5,000 population equivalent (p.e.)	2022
MARTHALEN(WEINLAND)CH_WWTP_003501	5,000 population equivalent (p.e.)	2022
BUBIKON(WOLFHAUSEN)CH_WWTP_011201	5,000 population equivalent (p.e.)	2022
ChamosonCH_WWTP_602200	5,000 population equivalent (p.e.)	2022
VouvryCH_WWTP_615900	5,000 population equivalent (p.e.)	2022
BEVAIXCH_WWTP_640200	5,000 population equivalent (p.e.)	2022
POSIEUXCH_WWTP_221900	4,860 population equivalent (p.e.)	2022
AUBONNECH_WWTP_542200	4,750 population equivalent (p.e.)	2022
BUSSY (AIPG)CH_WWTP_200400	4,700 population equivalent (p.e.)	2022
SAVIGNY PRA CHARBONCH_WWTP_561101	4,600 population equivalent (p.e.)	2022
UMIKENCH_WWTP_411800	4,567 population equivalent (p.e.)	2022
SURBTALCH_WWTP_432100	4,538 population equivalent (p.e.)	2022
BregagliaCH_WWTP_379205	4,500 population equivalent (p.e.)	2022
Neckertal-RennenCH_WWTP_340603	4,500 population equivalent (p.e.)	2022
HAUSENCH_WWTP_000401	4,500 population equivalent (p.e.)	2022
ELGGCH_WWTP_021701	4,500 population equivalent (p.e.)	2022
LostalloCH_WWTP_382101	4,375 population equivalent (p.e.)	2022
Vals (Camp)CH_WWTP_360301	4,375 population equivalent (p.e.)	2022
PERROYCH_WWTP_586000	4,375 population equivalent (p.e.)	2022
GROLLEYCH_WWTP_220000	4,375 population equivalent (p.e.)	2022
VionnazCH_WWTP_615802	4,200 population equivalent (p.e.)	2022
STEP SAIGNELEGIERCH_WWTP_675700	4,183 population equivalent (p.e.)	2022
RüthiCH_WWTP_325600	4,167 population equivalent (p.e.)	2022
Scuol (Ftan)CH_WWTP_376203	4,133 population equivalent (p.e.)	2022
SCHOENENBERGCH_WWTP_014001	4,100 population equivalent (p.e.)	2022
HENNIEZCH_WWTP_581900	4,096 population equivalent (p.e.)	2022
MOENCHALTORFCH_WWTP_019601	4,000 population equivalent (p.e.)	2022
ERLACHCH_WWTP_049200	4,000 population equivalent (p.e.)	2022
KANDERSTEGCH_WWTP_056500	4,000 population equivalent (p.e.)	2022
TWANN TLTCH_WWTP_074000	4,000 population equivalent (p.e.)	2022
ZULLWIL(MELTINGEN)CH_WWTP_262200	3,950 population equivalent (p.e.)	2022
ZernezCH_WWTP_374601	3,750 population equivalent (p.e.)	2022
ChampéryCH_WWTP_615100	3,750 population equivalent (p.e.)	2022
UnterbächCH_WWTP_620100	3,750 population equivalent (p.e.)	2022
BAULMESCH_WWTP_574500	3,665 population equivalent (p.e.)	2022
HORNUSSENCH_WWTP_416700	3,648 population equivalent (p.e.)	2022
LEUGGERNCH_WWTP_431300	3,637 population equivalent (p.e.)	2022
Varenzo (Quinto)CH_WWTP_507901	3,620 population equivalent (p.e.)	2022
PRANGINSCH_WWTP_572500	3,600 population equivalent (p.e.)	2022

Regulatory context

Verification pending. This is not an exhaustive review of applicable law.

Switzerland: water protection and cantonal authorization

Human legal review pending. FOEN identifies the federal Swiss water-protection framework and describes micropollutant equipment for selected WWTPs. Zurich illustrates a cantonal regime distinguishing cantonal-authority cases from municipal cases; it is not a uniform national administrative rule. Those pages do not establish the current Fedlex consolidation or an individual authorization, and the Advanced label does not determine programme inclusion.

Identify canton, authorization, wastewater type and applicable OEaux version.
The inventory label Advanced does not determine applicability of the micropollutant framework.
Check the canton and applicable Fedlex version; the Zurich example is not extended across Switzerland and does not equate sewer discharge with discharge to waters.

FOEN · Water: Acts and ordinancesReference portal · CH; catálogo federal de bases jurídicas
FOEN · tratamiento de aguas residuales comunalesOfficial guidance · CH; contexto general, no criterio por instalación
Fedlex · portal de OEaux/WPO814.201Reference portal · CH; consolidación vigente pendiente
Cantón de Zúrich · autorizaciones de aguas residualesOfficial guidance · Ejemplo cantonal; referencias GSchG 814.20 y GSchV/OEaux 814.201, sin consolidación federal acreditada

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