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
Lumnezia (Cumbel)CH_WWTP_361802	1,350 population equivalent (p.e.)	2022
VarenCH_WWTP_611600	1,334 population equivalent (p.e.)	2022
IcogneCH_WWTP_623900	1,300 population equivalent (p.e.)	2022
SEEWENCH_WWTP_248000	1,250 population equivalent (p.e.)	2022
Scuol (Ardez)CH_WWTP_376204	1,250 population equivalent (p.e.)	2022
Arosa (Langwies)CH_WWTP_392105	1,250 population equivalent (p.e.)	2022
IsoneCH_WWTP_500900	1,250 population equivalent (p.e.)	2022
SAFIENTAL (VALENDAS)CH_WWTP_367200.04	1,250 population equivalent (p.e.)	2022
L'ISLECH_WWTP_548600	1,212 population equivalent (p.e.)	2022
BRIENZWILERCH_WWTP_057400	1,200 population equivalent (p.e.)	2022
BlattenCH_WWTP_619200	1,200 population equivalent (p.e.)	2022
PRELESCH_WWTP_072500	1,200 population equivalent (p.e.)	2022
SOTTENSCH_WWTP_568700	1,143 population equivalent (p.e.)	2022
SAINT-GEORGECH_WWTP_543400	1,125 population equivalent (p.e.)	2022
CHEVROUXCH_WWTP_581300	1,125 population equivalent (p.e.)	2022
HembergCH_WWTP_337200	1,100 population equivalent (p.e.)	2022
ALTIKONCH_WWTP_021101	1,100 population equivalent (p.e.)	2022
MISERYCH_WWTP_227200	1,063 population equivalent (p.e.)	2022
Valsot (Ramosch)CH_WWTP_376401	1,062 population equivalent (p.e.)	2022
Medel/Lucmagn (Curaglia)CH_WWTP_398302	1,062 population equivalent (p.e.)	2022
SENARCLENSCH_WWTP_549900	1,062 population equivalent (p.e.)	2022
Lumnezia (Lumbrein)CH_WWTP_361803	1,062 population equivalent (p.e.)	2022
THIERRENSCH_WWTP_568900	1,062 population equivalent (p.e.)	2022
Valsot (Martina)CH_WWTP_376402	1,000 population equivalent (p.e.)	2022
Pfäfers - VättisCH_WWTP_329404	1,000 population equivalent (p.e.)	2022
Wildhaus-SägenbodenCH_WWTP_335702	1,000 population equivalent (p.e.)	2022
MONT-LA-VILLECH_WWTP_549100	1,000 population equivalent (p.e.)	2022
Surses (Bivio)CH_WWTP_354302	1,000 population equivalent (p.e.)	2022
FIEZCH_WWTP_555600	1,000 population equivalent (p.e.)	2022
ONNENSCH_WWTP_556500	1,000 population equivalent (p.e.)	2022
VAULIONCH_WWTP_576500	1,000 population equivalent (p.e.)	2022
COMBREMONT-LE-PETITCH_WWTP_581500	1,000 population equivalent (p.e.)	2022
LA LECHERETTECH_WWTP_584102	1,000 population equivalent (p.e.)	2022
GuttetCH_WWTP_610800	1,000 population equivalent (p.e.)	2022
KIENTALCH_WWTP_056700	1,000 population equivalent (p.e.)	2022
ISELTWALDCH_WWTP_058200	1,000 population equivalent (p.e.)	2022
OBERRIED B.I.CH_WWTP_058902	1,000 population equivalent (p.e.)	2022
KippelCH_WWTP_619700	1,000 population equivalent (p.e.)	2022
LA BREVINECH_WWTP_643200	1,000 population equivalent (p.e.)	2022
CHÂTONNAYECH_WWTP_206800	989 population equivalent (p.e.)	2022
LA SAGNECH_WWTP_642300	975 population equivalent (p.e.)	2022
ARA BUUSCH_WWTP_284400	964 population equivalent (p.e.)	2022
ARA MAISPRACHCH_WWTP_285300	940 population equivalent (p.e.)	2022
ARA KILCHBERG/ZEGLINGENCH_WWTP_285100	938 population equivalent (p.e.)	2022
Zernez (Susch)CH_WWTP_374604	937 population equivalent (p.e.)	2022
BONVILLARSCH_WWTP_555100	937 population equivalent (p.e.)	2022
ARNEX-SUR-ORBECH_WWTP_574300	937 population equivalent (p.e.)	2022
TREYCH_WWTP_582700	937 population equivalent (p.e.)	2022
ESSERTINESCH_WWTP_552001	900 population equivalent (p.e.)	2022
Scuol (Guarda)CH_WWTP_376205	875 population equivalent (p.e.)	2022
BOTTENSCH_WWTP_551400	875 population equivalent (p.e.)	2022
POLIEZ-PITTETCH_WWTP_553300	875 population equivalent (p.e.)	2022
Lumnezia (Vrin)CH_WWTP_361809	875 population equivalent (p.e.)	2022
SAFIENTAL (SAFIEN-PLATZ)CH_WWTP_367200.05	875 population equivalent (p.e.)	2022
BOULENSCH_WWTP_566100	875 population equivalent (p.e.)	2022
SAINT-CIERGESCH_WWTP_568500	875 population equivalent (p.e.)	2022
ROSSINIERECH_WWTP_584200	875 population equivalent (p.e.)	2022
MOLONDINCH_WWTP_592100	875 population equivalent (p.e.)	2022
MaseCH_WWTP_608500	867 population equivalent (p.e.)	2022
STEP LAJOUXCH_WWTP_675000	850 population equivalent (p.e.)	2022
ARA BRETZWILCH_WWTP_288300	830 population equivalent (p.e.)	2022
KIENBERGCH_WWTP_249200	810 population equivalent (p.e.)	2022
HUNDWIL(SCHWAEGALP)CH_WWTP_300201	800 population equivalent (p.e.)	2022
LE LIEUCH_WWTP_587300	800 population equivalent (p.e.)	2022
Kläranlage EigenthalCH_WWTP_106604	800 population equivalent (p.e.)	2022
VULLIERENSCH_WWTP_565400	787 population equivalent (p.e.)	2022
Zernez (Lavin)CH_WWTP_374603	750 population equivalent (p.e.)	2022
Sils i.E./Segl (Fex)CH_WWTP_378902	750 population equivalent (p.e.)	2022
HIMMELRIED/OST(WALDECK)CH_WWTP_261801	750 population equivalent (p.e.)	2022
BOUSSENSCH_WWTP_547300	750 population equivalent (p.e.)	2022
Albula/Alvra (Surava)CH_WWTP_354202	750 population equivalent (p.e.)	2022
VILLARS-SOUS-YENSCH_WWTP_565200	750 population equivalent (p.e.)	2022
PEYRES-POSSENSCH_WWTP_568200	750 population equivalent (p.e.)	2022
VILLARS-SOUS-CHAMPVENTCH_WWTP_593600	750 population equivalent (p.e.)	2022
STEP MOVELIERCH_WWTP_671800	750 population equivalent (p.e.)	2022
INNERTHALCH_WWTP_134300	750 population equivalent (p.e.)	2022
TORNYCH_WWTP_210100	750 population equivalent (p.e.)	2022
VILLAREPOSCH_WWTP_227900	750 population equivalent (p.e.)	2022
ARA WINTERSINGENCH_WWTP_286600	730 population equivalent (p.e.)	2022
MOIRYCH_WWTP_549000	725 population equivalent (p.e.)	2022
REVEROLLECH_WWTP_564400	725 population equivalent (p.e.)	2022
ARA BENNWILCH_WWTP_288200	720 population equivalent (p.e.)	2022
Rodi (Prato Leventina)CH_WWTP_507802	710 population equivalent (p.e.)	2022
ARA WENSLINGENCH_WWTP_286500	700 population equivalent (p.e.)	2022
LA COTE-AUX-FEESCH_WWTP_640400	700 population equivalent (p.e.)	2022
VAUMARCUSCH_WWTP_641402	700 population equivalent (p.e.)	2022
GUTTANNEN-RUEBGARTICH_WWTP_078200	700 population equivalent (p.e.)	2022
NOIRAIGUECH_WWTP_650800	700 population equivalent (p.e.)	2022
STEP LA BAROCHECH_WWTP_681000	700 population equivalent (p.e.)	2022
MORRENS-MEBRECH_WWTP_552702	687 population equivalent (p.e.)	2022
VALEYRES-SOUS-URSINSCH_WWTP_593400	687 population equivalent (p.e.)	2022
Lumnezia (Suraua)CH_WWTP_361808	670 population equivalent (p.e.)	2022
Loco (Onsernone)CH_WWTP_513602	630 population equivalent (p.e.)	2022
Davos (Monstein)CH_WWTP_385104	625 population equivalent (p.e.)	2022
ARA ANWILCH_WWTP_284100	625 population equivalent (p.e.)	2022
ARA OLTINGENCH_WWTP_285500	625 population equivalent (p.e.)	2022
LA CHAUXCH_WWTP_547400	625 population equivalent (p.e.)	2022
CUARNENSCH_WWTP_547900	625 population equivalent (p.e.)	2022
LUSSERY-VILLARSCH_WWTP_548700	625 population equivalent (p.e.)	2022
MORRENS-TALENTCH_WWTP_552701	625 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.