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
Scuol (Sot Ruinas)CH_WWTP_376201	17,500 population equivalent (p.e.)	2022
SAFIENTAL (VERSAM)CH_WWTP_367200.01	17,500 population equivalent (p.e.)	2022
WOHLENCH_WWTP_036000	17,500 population equivalent (p.e.)	2022
ARA Talschaft EntlebuchCH_WWTP_100100	17,500 population equivalent (p.e.)	2022
PFAEFFIKONCH_WWTP_017701	17,000 population equivalent (p.e.)	2022
EGG-OETWILCH_WWTP_019201	17,000 population equivalent (p.e.)	2022
KELLERAMTCH_WWTP_407900	16,497 population equivalent (p.e.)	2022
MURICH_WWTP_423600	16,294 population equivalent (p.e.)	2022
OBERES SURBTALCH_WWTP_404300	16,003 population equivalent (p.e.)	2022
SAINT-PREXCH_WWTP_564600	16,000 population equivalent (p.e.)	2022
RUETICH_WWTP_011801	16,000 population equivalent (p.e.)	2022
ROCHES(MOUTIER SEME)CH_WWTP_070400	16,000 population equivalent (p.e.)	2022
GraechenCH_WWTP_628500	15,750 population equivalent (p.e.)	2022
ROCHECH_WWTP_541200	15,533 population equivalent (p.e.)	2022
STETTENCH_WWTP_404100	15,408 population equivalent (p.e.)	2022
Kläranlage Sempach-NeuenkirchCH_WWTP_110200	15,400 population equivalent (p.e.)	2022
KERZERSCH_WWTP_226500	15,334 population equivalent (p.e.)	2022
PENTHAZCH_WWTP_549601	15,000 population equivalent (p.e.)	2022
Surses (Cunter)CH_WWTP_354301	15,000 population equivalent (p.e.)	2022
LUTRYCH_WWTP_560600	15,000 population equivalent (p.e.)	2022
GOSSAUCH_WWTP_011501	15,000 population equivalent (p.e.)	2022
STAEFA/OETIKONCH_WWTP_015801	15,000 population equivalent (p.e.)	2022
GROSSHOECHSTETTENCH_WWTP_060800	15,000 population equivalent (p.e.)	2022
OBERMARCHCH_WWTP_134600	15,000 population equivalent (p.e.)	2022
ENGELBERGCH_WWTP_140200	15,000 population equivalent (p.e.)	2022
Croglio (Magliasina)CH_WWTP_517800	14,700 population equivalent (p.e.)	2022
Seewis i.P. (Vorderes Prättigau)CH_WWTP_397201	14,566 population equivalent (p.e.)	2022
SaxonCH_WWTP_614100	14,267 population equivalent (p.e.)	2022
ELLIKON A.D.THURCH_WWTP_021801	14,000 population equivalent (p.e.)	2022
LE LANDERONCH_WWTP_645500	14,000 population equivalent (p.e.)	2022
ZUMHOLZ (SENSE-OBERLAND)CH_WWTP_231000	13,750 population equivalent (p.e.)	2022
BELLACH(BE-LOMM.-LAN.)CH_WWTP_254200	13,750 population equivalent (p.e.)	2022
SamnaunCH_WWTP_375201	13,750 population equivalent (p.e.)	2022
OLLONCH_WWTP_540900	13,750 population equivalent (p.e.)	2022
LeukerbadCH_WWTP_611100	13,750 population equivalent (p.e.)	2022
SIMMENTAL OBERES (ZWEISIMMEN)CH_WWTP_079400	13,600 population equivalent (p.e.)	2022
CHANCYCH_WWTP_661100	13,600 population equivalent (p.e.)	2022
HOMBRECHTIKON(FELDBACH)CH_WWTP_015301	13,500 population equivalent (p.e.)	2022
TroistorrentsCH_WWTP_615600	13,417 population equivalent (p.e.)	2022
WALDCH_WWTP_012001	13,300 population equivalent (p.e.)	2022
KIESENTAL UNTERESCH_WWTP_061100	13,000 population equivalent (p.e.)	2022
TAEUFFELEN ARATCH_WWTP_075100	13,000 population equivalent (p.e.)	2022
AUTIGNY (AEGN)CH_WWTP_217300	13,000 population equivalent (p.e.)	2022
FLUMENTHAL(UNT.LEBERBERG)CH_WWTP_254501	12,500 population equivalent (p.e.)	2022
BUEHLER(AU)CH_WWTP_302100	12,500 population equivalent (p.e.)	2022
LEYSINCH_WWTP_540700	12,500 population equivalent (p.e.)	2022
PAYERNECH_WWTP_582200	12,500 population equivalent (p.e.)	2022
LE CHENITCH_WWTP_587200	12,500 population equivalent (p.e.)	2022
LAUTERBRUNNENCH_WWTP_058400	12,500 population equivalent (p.e.)	2022
SAINTE-CROIXCH_WWTP_556801	12,087 population equivalent (p.e.)	2022
MESSEN(LIMPACHTAL)CH_WWTP_245700	12,000 population equivalent (p.e.)	2022
FEHRALTORFCH_WWTP_017201	12,000 population equivalent (p.e.)	2022
PFUNGENCH_WWTP_022401	12,000 population equivalent (p.e.)	2022
WANGEN-WIEDLISBACHCH_WWTP_099200	12,000 population equivalent (p.e.)	2022
EschenbachCH_WWTP_333201	11,900 population equivalent (p.e.)	2022
Nesslau-ChurfirstenCH_WWTP_335601	11,900 population equivalent (p.e.)	2022
EGLISAUCH_WWTP_005501	11,700 population equivalent (p.e.)	2022
KESSWILCH_WWTP_442600	11,500 population equivalent (p.e.)	2022
ZURZACHCH_WWTP_432300	11,417 population equivalent (p.e.)	2022
VILLERET(ST.IMIER SESE)CH_WWTP_044800	11,300 population equivalent (p.e.)	2022
Ayent-VoosCH_WWTP_608200	11,250 population equivalent (p.e.)	2022
FRUTIGEN-KANDERSPITZCH_WWTP_056300	11,250 population equivalent (p.e.)	2022
TAVANNES SETE (LOVERESSE)CH_WWTP_069600	11,250 population equivalent (p.e.)	2022
FALKENMATTCH_WWTP_419800	11,105 population equivalent (p.e.)	2022
SCHOEFTLANDCH_WWTP_414400	11,099 population equivalent (p.e.)	2022
DOMDIDIER (AIDE)CH_WWTP_201300	11,092 population equivalent (p.e.)	2022
MUELLHEIMCH_WWTP_483100	11,000 population equivalent (p.e.)	2022
SONCEBOZ(BAS-VALLON)CH_WWTP_044400	11,000 population equivalent (p.e.)	2022
TEUFEN(MÜHLTOBEL)CH_WWTP_302401	10,833 population equivalent (p.e.)	2022
SINSCH_WWTP_423900	10,735 population equivalent (p.e.)	2022
MITTLERES WYNENTALCH_WWTP_414500	10,616 population equivalent (p.e.)	2022
CHARMEY (AECE)CH_WWTP_212700	10,325 population equivalent (p.e.)	2022
ARA Frenke 3CH_WWTP_282300	10,200 population equivalent (p.e.)	2022
ARA Frenke 2CH_WWTP_289100	10,200 population equivalent (p.e.)	2022
SCHMITTENBACHCH_WWTP_412100	10,160 population equivalent (p.e.)	2022
Disentis/Mustér (Raveras)CH_WWTP_398202	10,000 population equivalent (p.e.)	2022
LAVEY-ST-MAURICECH_WWTP_540600	10,000 population equivalent (p.e.)	2022
SennwaldCH_WWTP_327402	10,000 population equivalent (p.e.)	2022
WartauCH_WWTP_327600	10,000 population equivalent (p.e.)	2022
BREMBLENSCH_WWTP_562200	10,000 population equivalent (p.e.)	2022
ANDELFINGENCH_WWTP_003001	10,000 population equivalent (p.e.)	2022
BUCHS(FURTHOF)CH_WWTP_008301	10,000 population equivalent (p.e.)	2022
BAUMACH_WWTP_017101	10,000 population equivalent (p.e.)	2022
SEUZACHCH_WWTP_022701	10,000 population equivalent (p.e.)	2022
INSCH_WWTP_049602	10,000 population equivalent (p.e.)	2022
Kläranlage LützelauCH_WWTP_106902	10,000 population equivalent (p.e.)	2022
KLINGNAUCH_WWTP_430900	9,909 population equivalent (p.e.)	2022
Kläranlage Hitzkirchertal / MoosmattenCH_WWTP_103500	9,900 population equivalent (p.e.)	2022
BEXCH_WWTP_540200	9,625 population equivalent (p.e.)	2022
ECHALLENSCH_WWTP_551800	9,500 population equivalent (p.e.)	2022
BOVERESSECH_WWTP_650200	9,500 population equivalent (p.e.)	2022
BütschwilCH_WWTP_339100	9,166 population equivalent (p.e.)	2022
WalenstadtCH_WWTP_329800	9,000 population equivalent (p.e.)	2022
EvionnazCH_WWTP_621300	9,000 population equivalent (p.e.)	2022
RiddesCH_WWTP_613900	8,750 population equivalent (p.e.)	2022
ARA Gemeindeverband Wolhusen-Werthenstein-RuswilCH_WWTP_100900	8,750 population equivalent (p.e.)	2022
REUSS SCHACHENCH_WWTP_423400	8,632 population equivalent (p.e.)	2022
Poschiavo (Li Geri)CH_WWTP_356101	8,625 population equivalent (p.e.)	2022
LIPPOLDSWILEN(KEMMENTAL)CH_WWTP_463500	8,600 population equivalent (p.e.)	2022
Ebnat- KappelCH_WWTP_335200	8,500 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.