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
LEIBSTADTCH_WWTP_431100	3,571 population equivalent (p.e.)	2022
BIOLEY-ORJULAZCH_WWTP_551300	3,500 population equivalent (p.e.)	2022
DACHSENCH_WWTP_002501	3,500 population equivalent (p.e.)	2022
UNTERSTAMMHEIM(STAMMERTAL)CH_WWTP_004201	3,500 population equivalent (p.e.)	2022
ELSAUCH_WWTP_021901	3,500 population equivalent (p.e.)	2022
ROTHENTHURMCH_WWTP_137000	3,500 population equivalent (p.e.)	2022
WALDSTATT(AUELI)CH_WWTP_300700	3,400 population equivalent (p.e.)	2022
MONTAGNYCH_WWTP_202900	3,375 population equivalent (p.e.)	2022
HérémenceCH_WWTP_608400	3,334 population equivalent (p.e.)	2022
Bergün FilisurCH_WWTP_354401	3,333 population equivalent (p.e.)	2022
St-GingolphCH_WWTP_615500	3,227 population equivalent (p.e.)	2022
Mesocco (San Bernardino)CH_WWTP_382201	3,200 population equivalent (p.e.)	2022
Ilanz/Glion (Rueun)CH_WWTP_361901	3,200 population equivalent (p.e.)	2022
STEP SEVEBOCH_WWTP_677500	3,133 population equivalent (p.e.)	2022
RUETTENENCH_WWTP_255500	3,125 population equivalent (p.e.)	2022
NUNNINGENCH_WWTP_262100	3,125 population equivalent (p.e.)	2022
GRANGES-MARNANDCH_WWTP_581800	3,083 population equivalent (p.e.)	2022
ORMONT-DESSOUS LE SEPEYCH_WWTP_541001	3,000 population equivalent (p.e.)	2022
SERVIONCH_WWTP_579900	3,000 population equivalent (p.e.)	2022
OSSINGENCH_WWTP_003701	3,000 population equivalent (p.e.)	2022
YVONANDCH_WWTP_593900	3,000 population equivalent (p.e.)	2022
STEP BURECH_WWTP_677800	3,000 population equivalent (p.e.)	2022
NEUHEIM(TAL)CH_WWTP_170500	3,000 population equivalent (p.e.)	2022
KALLNACHCH_WWTP_030400	2,900 population equivalent (p.e.)	2022
STEP LES BREULEUXCH_WWTP_674300	2,867 population equivalent (p.e.)	2022
RODERSDORFCH_WWTP_247900	2,800 population equivalent (p.e.)	2022
Albula/Alvra (Alvaneu)CH_WWTP_354201	2,800 population equivalent (p.e.)	2022
Vionnaz-TorgonCH_WWTP_615801	2,800 population equivalent (p.e.)	2022
STEP LE NOIRMONTCH_WWTP_675400	2,800 population equivalent (p.e.)	2022
Klosters-Serneus (Serneus)CH_WWTP_387102	2,750 population equivalent (p.e.)	2022
Neckertal-TüfiCH_WWTP_337600	2,750 population equivalent (p.e.)	2022
CORCELLES-PAYERNECH_WWTP_581600	2,718 population equivalent (p.e.)	2022
Trin (Dàbi)CH_WWTP_373402	2,700 population equivalent (p.e.)	2022
STEP ST-URSANNECH_WWTP_680400	2,633 population equivalent (p.e.)	2022
Conthey-ErdeCH_WWTP_602300	2,625 population equivalent (p.e.)	2022
SCHLEITHEIMCH_WWTP_295200	2,500 population equivalent (p.e.)	2022
GIMELCH_WWTP_542800	2,500 population equivalent (p.e.)	2022
GanterschwilCH_WWTP_340301	2,500 population equivalent (p.e.)	2022
CUGYCH_WWTP_551600	2,500 population equivalent (p.e.)	2022
CONCISECH_WWTP_555500	2,500 population equivalent (p.e.)	2022
GRANDCOURCH_WWTP_581700	2,500 population equivalent (p.e.)	2022
IsérablesCH_WWTP_613400	2,500 population equivalent (p.e.)	2022
LES BRENETSCH_WWTP_643100	2,500 population equivalent (p.e.)	2022
Kläranlage FlühliCH_WWTP_100402	2,500 population equivalent (p.e.)	2022
OBERRUETICH_WWTP_423700	2,449 population equivalent (p.e.)	2022
RUEDLINGENCH_WWTP_293800	2,400 population equivalent (p.e.)	2022
St-MartinCH_WWTP_608700	2,400 population equivalent (p.e.)	2022
Kläranlage SörenbergCH_WWTP_100401	2,400 population equivalent (p.e.)	2022
CROYCH_WWTP_575200	2,375 population equivalent (p.e.)	2022
Brusio (Li Geri)CH_WWTP_355101	2,333 population equivalent (p.e.)	2022
BERCHER II FOYRAUSAZCH_WWTP_551201	2,300 population equivalent (p.e.)	2022
GERSAUCH_WWTP_131102	2,240 population equivalent (p.e.)	2022
Rheinwald (Splügen)CH_WWTP_371401	2,200 population equivalent (p.e.)	2022
STADELCH_WWTP_010001	2,200 population equivalent (p.e.)	2022
VILLNACHERNCH_WWTP_412200	2,192 population equivalent (p.e.)	2022
ARA LIESBERGCH_WWTP_278800	2,100 population equivalent (p.e.)	2022
Arosa (Molinis)CH_WWTP_392103	2,000 population equivalent (p.e.)	2022
YVORNECH_WWTP_541300	2,000 population equivalent (p.e.)	2022
Lumnezia (Degen)CH_WWTP_361807	2,000 population equivalent (p.e.)	2022
LULLY-LUSSYCH_WWTP_563900	2,000 population equivalent (p.e.)	2022
RHEINAUCH_WWTP_003801	2,000 population equivalent (p.e.)	2022
LES PONTS-DE-MARTELCH_WWTP_643700	2,000 population equivalent (p.e.)	2022
ECLEPENSCH_WWTP_548200	1,975 population equivalent (p.e.)	2022
SEVERY-PAMPIGNYCH_WWTP_550000	1,937 population equivalent (p.e.)	2022
Olivone (Blenio)CH_WWTP_504901	1,880 population equivalent (p.e.)	2022
Carì (Faido)CH_WWTP_507200	1,880 population equivalent (p.e.)	2022
ECLAGNENSCH_WWTP_551900	1,875 population equivalent (p.e.)	2022
Lumnezia (Vella)CH_WWTP_361801	1,875 population equivalent (p.e.)	2022
COLOMBIERCH_WWTP_563000	1,875 population equivalent (p.e.)	2022
BALLAIGUESCH_WWTP_574400	1,875 population equivalent (p.e.)	2022
REITNAUCH_WWTP_427200	1,795 population equivalent (p.e.)	2022
CUDREFINCH_WWTP_545600	1,775 population equivalent (p.e.)	2022
Davos (Wiesen)CH_WWTP_385105	1,750 population equivalent (p.e.)	2022
BALLENSCH_WWTP_542300	1,750 population equivalent (p.e.)	2022
INNERTKIRCHENCH_WWTP_078400	1,750 population equivalent (p.e.)	2022
Kläranlage Schwarzenberg DorfCH_WWTP_106603	1,700 population equivalent (p.e.)	2022
STEP SECOCH_WWTP_679300	1,700 population equivalent (p.e.)	2022
STEP LA BROCHECH_WWTP_674201	1,633 population equivalent (p.e.)	2022
FELDBRUNNEN-ST. NIKLAUSCH_WWTP_254400	1,625 population equivalent (p.e.)	2022
CHAMPAGNECH_WWTP_555300	1,625 population equivalent (p.e.)	2022
GINGINSCH_WWTP_571900	1,625 population equivalent (p.e.)	2022
ROUGEMONTCH_WWTP_584301	1,625 population equivalent (p.e.)	2022
KLEINLUETZELCH_WWTP_261900	1,600 population equivalent (p.e.)	2022
THALHEIM(GUETIGHAUSEN)CH_WWTP_003901	1,600 population equivalent (p.e.)	2022
SEELISBERGCH_WWTP_121500	1,600 population equivalent (p.e.)	2022
MATHODCH_WWTP_591900	1,587 population equivalent (p.e.)	2022
VUARRENSCH_WWTP_553900	1,575 population equivalent (p.e.)	2022
EPENDESCH_WWTP_591400	1,525 population equivalent (p.e.)	2022
Davos (Glaris)CH_WWTP_385103	1,500 population equivalent (p.e.)	2022
APPLESCH_WWTP_542100	1,500 population equivalent (p.e.)	2022
SAINTE-CROIX L'AUBERSONCH_WWTP_556802	1,500 population equivalent (p.e.)	2022
FOREL-PIGEONCH_WWTP_560402	1,500 population equivalent (p.e.)	2022
LE PONTCH_WWTP_587101	1,500 population equivalent (p.e.)	2022
LES BIOUXCH_WWTP_587102	1,500 population equivalent (p.e.)	2022
BELLELAYCH_WWTP_070601	1,500 population equivalent (p.e.)	2022
MONTRICHERCH_WWTP_549200	1,418 population equivalent (p.e.)	2022
SISIKONCH_WWTP_121700	1,400 population equivalent (p.e.)	2022
VORDERTHALCH_WWTP_134800	1,400 population equivalent (p.e.)	2022
Vaz/Obervaz (Faschas)CH_WWTP_350601	1,375 population equivalent (p.e.)	2022
STEP MONTFAUCONCH_WWTP_675100	1,367 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.