Image Credits

The following images are used to illustrate water treatment plants and spares across this website. Each is reproduced under the licence shown; select a title to view the original file, author and full licence terms. Images may have been resized or cropped.

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  Calderas 1.jpgoriginal work by User:Yrithinnd; facelift by ChNPP · CC BY 2.5
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  Activated Carbon Filters.pngVentrovert · CC BY 4.0
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  Industrial cooling tower.jpgCASEPL · CC BY-SA 4.0
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  Instalacja demineralizacji wody.jpgAdam Marek Kłosiński · CC0
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  Water Treatment Plant in India.jpgApex Ecotech Private Limited · CC BY-SA 4.0
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  Effluent Water treatment plant at MIDC.jpegbk kartik21 · Public domain
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  Membrane bioreactor (MBR) (5984836730).jpgSuSanA Secretariat · CC BY 2.0
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  Industrial Water Treatment Plants.jpgApex Ecotech Private Limited · CC BY-SA 4.0
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  West Basin WRF Carson CA.jpgU.S. EPA · Public domain
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  Reverse Osmosis Plant.JPGBlueye · CC BY-SA 3.0
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  Reverse osmosis desalination plant.JPGJames Grellier · CC BY-SA 3.0
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  Water softener.jpgరవిచంద్ర · CC BY-SA 4.0
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  Aeration tank activated sludge process STP Bengaluru India.jpgVraj Acharya, WELL Labs · CC BY-SA 4.0
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  Wastewater UF membrane system, Aquabio.jpgAquabio Ltd. · CC BY-SA 3.0
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  Bag filter.jpgTetris L · Public domain
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  Ball valve--The-Alloy-Valve-Stockist.JPGHeather Smith · CC BY 3.0
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  Butterfly-valve--The-Alloy-Valve-Stockist.JPGHeather Smith · CC BY 3.0
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  Membrane filter in housing.jpgAgne27 · CC BY-SA 3.0
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  Conductivity meter.jpgSarathkumaran Ranganathan · CC BY-SA 4.0
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  ExposedCopperCoupon.jpgRobertgutter · CC BY-SA 4.0
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  Diaphragm valve.jpgPalagiri · CC BY-SA 4.0
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  Image-DiscDiffuser.JPGTom Frankel, SSI Aeration, Inc. · CC BY-SA 3.0
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  Milton Roy's Primeroyal X Chemical Metering Pump.jpgLaurelBloch · CC BY-SA 4.0
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  Cooling Tower Fill Material.jpgSAF · CC BY-SA 4.0
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  Diemme Filtration Filter Press in Poland 2.jpgPeter Craven · CC BY 2.0
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  Flanged forged carbon steel gate valve.jpgHeather Smith · CC BY 3.0
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  Pressure Gauge.jpgIn Transit · CC BY-SA 4.0
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  Super-duplex-valve-globe-valves.jpgHeather Smith · CC BY-SA 3.0
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  The different layers of a filter used at drinking water facilities.jpgU.S. Environmental Protection Agency · Public domain
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  Reverse osmosis membrane element layers.jpgDavid Shankbone · CC BY 3.0
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  Electrical Control Panel Made By True Logic Group Inc.jpgJbarnard33 · CC BY 4.0
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  PH meter.jpgSarathkumaran Ranganathan · CC BY-SA 4.0
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  RKB V vertical multistage pumps.jpgMukund275 · CC BY-SA 3.0
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  Ion exchange resin beads.jpgBugman at English Wikipedia · Public domain
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  Flow-tube-meter hg.jpgHannes Grobe · CC BY-SA 3.0
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  A Single Cartridge Seal.jpgGordonSBuck · CC BY-SA 4.0
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  Y strainer cross section.jpgPalagiri · CC BY-SA 4.0
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  Tds-meter.jpgSpotless property · CC BY-SA 3.0
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  Hach Classroom Drinking Water Testing Kit 2006.526 open.jpgStaff photographer · CC BY-SA 3.0
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  Lamella clarifier installation.jpgTube-settler · CC BY-SA 4.0
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  Steam Boiler at VITM.jpgAnup Sadi · CC BY-SA 4.0
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  BGSU Heating Plant Interior.jpgMbrickn · CC BY-SA 4.0
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  Kewanee Fire-Tube Package Boiler.jpgGarrett F. · CC BY-SA 3.0
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  Fire tube boiler at the Jabalpur Engineering College.jpgJbl87 · CC BY-SA 4.0
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  Fire tube steam boiler bahan bakar Gas LPG dan Solar winsketel.jpgDiemareng · CC BY-SA 4.0
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  Water Tube Steam Boiler.jpgDiemareng · CC BY-SA 4.0
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  Steam Boiler.jpgAbanoub Gabra · CC BY-SA 4.0
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  313kgh Complete Skid Mounted Steam Boiler Package.jpgSteamboilers · CC BY-SA 4.0
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  Seattle Steam Company biomass boiler 01.jpgJoe Mabel · CC BY-SA 3.0
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  Viessmann Vertomat Condensing Boiler.JPGDunnd74 at English Wikipedia · CC BY 2.5
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  2026 Centralna Ciepłownia w Kłodzku (06).jpgJacek Halicki · CC BY-SA 4.0
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  Induced Draft Cooling Tower for HVAC.jpgAloofmanish · CC BY-SA 4.0
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  Cooling tower at BASF antwerp.JPGAlf van Beem · CC0
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  Industrial Counterflow Cooling Towers.jpgPerfectvinod · CC BY-SA 4.0
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  Package type cooling tower.JPGIlanbar6 · CC BY-SA 4.0
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  Cenk Endustri Field Erected Industrial Cooling Tower.JPGCenk Endustri · CC BY-SA 3.0
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  Cenk Endustri Field Erected Cooling Tower.JPGCenk Endustri · CC BY-SA 3.0
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  Open loop Cooling Tower for DG Set.jpgAloofmanish · CC BY-SA 4.0
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  Package Type Induced Draft Counter Flow Cooling Towers.jpgCenk Endustri · CC BY-SA 3.0
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  Induced Draught Cooling Tower.jpgAloofmanish · CC0
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  Cooling towers at Queensland’ hospital 01.jpgKgbo · CC BY-SA 4.0
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  Torre evaporativa Evapco.jpgAir fans · CC BY-SA 4.0
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  Cooling tower - showers.jpgJan Beránek · CC BY-SA 4.0
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  Gatineau paper mill effluent treatment plant.JPGÓðinn · CC BY-SA 2.5 ca
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  Effluent weir Viikinmäki Wastewater Treatment Plant.jpgAntti Leppänen · CC BY 4.0
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  Industrial water treatment for Ostrow Wielkopolski in Rabczyn.jpgStiopa · CC BY-SA 3.0
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  Aerated treatment lagoon at the AV Nackawic pulp mill.jpgQuintin Soloviev · CC BY 4.0
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  U-depuradora-aguas-residuales-industriales-sniace-torrelavega-marzo-2025-i.jpgMottaW · CC BY 4.0
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  U-depuradora-aguas-residuales-industriales-sniace-torrelavega-marzo-2025-c.jpgMottaW · CC BY 4.0
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  U-depuradora-aguas-residuales-industriales-sniace-torrelavega-marzo-2025-e.jpgMottaW · CC BY 4.0
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  U-depuradora-aguas-residuales-industriales-sniace-torrelavega-marzo-2025-k.jpgMottaW · CC BY 4.0
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  Doddabommasandra Lake STP Bengaluru sewage treatment plant aerial view India.jpgVraj Acharya, WELL Labs · CC BY-SA 4.0
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  Wastewater Clarifiers.jpgRoen Wainscoat · CC BY-SA 4.0
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  Sedimentation tank.jpgMADe · CC BY 3.0
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  Verbandskläranlage Hof 20250106 HOF0646 RAW-Export.pngPantheraLeo1359531 · CC BY 4.0
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  Verbandskläranlage Hof 20250106 HOF0602 RAW-Export.pngPantheraLeo1359531 · CC BY 4.0
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  Verbandskläranlage Hof 20250106 HOF0522 RAW-Export.pngPantheraLeo1359531 · CC BY 4.0
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  Gresham Wastewater Treatment Plant secondary clarifiers 2025.jpgPortlandAppraisalBlog · CC BY-SA 4.0
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  Oczyszczalnia ścieków w Białymstoku (Składowa) 1.jpgHenryk Borawski · CC BY-SA 3.0
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  A 1000 liter reverse osmosis plant for commercial use.jpgVishalsh521 · CC BY-SA 3.0
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  RO Plant.jpgWatercareservice · CC BY-SA 4.0
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  Reverse Osmosis Skid.jpgsirdle · CC BY-SA 2.0
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  Malta - Pembroke - Triq il-Fortizza - Reverse Osmosis Plant 01 ies.jpgFrank Vincentz · CC BY-SA 3.0
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  Pueblo Chemical Agent-Destruction Pilot Plant Reverse Osmosis System (8453395725).jpgPEO ACWA · CC BY 2.0
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  Backwashing in a water filtration plant.JPGZ22 · CC BY-SA 4.0
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  Slow sand filter room.jpgZ22 · CC BY-SA 3.0
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  ZeeWeed 500 ultrafiltration module at a NEWater plant.jpgZ22 · CC BY-SA 4.0
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  Ultrafiltration system at Bedok NEWater Factory.jpgZ22 · CC BY-SA 4.0
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  MBR plant for dairy production.jpgWehrle Werk AG · CC BY-SA 4.0
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  Jeyranbatan UF Water Treatment Plant.jpgLifekey23 · CC BY-SA 4.0
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  Gotha Stadtbad Ultrafiltration.JPGBenreis · CC BY 3.0
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  Safety valve-01.jpg© 2009 K. Krallis, SV1XV · CC BY-SA 3.0
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  Coale safety valve 141-R.jpgDidier Duforest · CC BY-SA 4.0
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  Cologne Germany Bopp&Reutter-Safety-Relief-Valve-01.jpgCEphoto, Uwe Aranas · CC BY-SA 3.0
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  QSMM Boiler feed pump 2607c.JPGClem Rutter, Rochester, Kent. · CC BY 3.0
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  Zantingh Gas-Olie brander.JPGHoogvlieth · CC BY-SA 4.0
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  Zantingh Brander.JPGZantingh B.V. · CC BY-SA 4.0
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  Boiler tubes 2 Hove eng - Flickr - Elsie esq..jpgLes Chatfield from Brighton, England · CC BY 2.0
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  Vesilasijahanat.jpgKari Jokinen · CC BY-SA 3.0
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  Swing Check valves.JPGHeather Smith · CC BY 3.0
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  Check-valve--The-Alloy-Valve-Stockist-pressure-seal-bonnet.JPGHeather Smith · CC BY 3.0
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  Cooling tower fan.jpgSteve Johnson from Valparaiso Indiana, USA · CC BY 2.0
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  Beneath Cooling Tower.jpgTJBlackwell · CC BY 3.0
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  Multiple reducer gears.JPGJohnscotaus · CC BY-SA 4.0
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  Pressure relief valve DN25 on cooling water.jpgRomanM82 · CC BY-SA 4.0
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  Closed cooling water system pumps and its pipe connections.jpgHarald the Bard · CC BY-SA 4.0
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  Reverse osmosis membrane coil.jpgDavid Shankbone · CC BY 3.0
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  Wickelmodule für die RO.JPGPeter in s · Public domain
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  Membrane filter without housing.jpgAgne27 · CC BY-SA 3.0
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  High pressure pump 20 kW.jpgHammelmann Oelde · CC BY-SA 3.0
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  High pressure pump 70 kW.jpgHammelmann Oelde · CC BY-SA 3.0
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  High pressure pump 250 kW.jpgHammelmann Oelde · CC BY-SA 3.0
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  Alat Cleaning Membrane Reverse Osmosis.jpgmapurnautama · CC BY-SA 4.0
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  Techfluid-CG34-2500.jpg© 2010 K. Krallis (SV1XV) · CC BY-SA 3.0 gr
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  Rotameter.jpgOwn work · Public domain
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  Solenoid valve 2019.jpgToT89 · CC BY-SA 4.0
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  Coriolis Flow Meter.jpgBitjungle · CC BY-SA 4.0
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  Diemme Filtration Filter Press in Poland 1.jpgPeter Craven · CC BY 2.0
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  Diemme Filtration Filter Press cloth pack.jpgPeter Craven · CC BY 2.0
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  Filter press (6322212987).jpgPeter Craven · CC BY 2.0
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  Belt filter press - Blue Plains WWTP - 2016.jpgMoreau1 · Public domain
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  Fully-automated-filter-press-for-fly-ash-washing.jpgStTaAQUA · CC BY-SA 4.0
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  LMI's EXCEL XR, Chemical Metering Pump.jpgLaurelBloch · CC BY-SA 4.0
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  Milton Roy's Global mRoy Metering Pump.jpgLaurelBloch · CC BY-SA 4.0
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  Milton Roy's Primeroyal N Triplex Metering Pump.jpgLaurelBloch · CC BY-SA 4.0
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  Sera Metering pumps C409-410.2.jpgMcFly211 · CC BY-SA 4.0
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  Grobrechen - bar screen (12358976435).jpgSuSanA Secretariat · CC BY 2.0
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  Submersible pump 0.75HP.jpgMar11 · CC BY-SA 4.0
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  Submersible pump in action.jpgKemikungen · CC BY 3.0
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  Submersible pump 30-07-2012.JPGJoydeep · CC BY-SA 3.0
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  Warman centrifugal pump.jpgBernard S. Janse · CC BY 2.5
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  Centrifugal Pump.jpgSaud · CC BY-SA 4.0
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  Wafer check valve--The-Alloy-Valve-Stockist.JPGHeather Smith · CC BY 3.0
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  Flanged-Nozzle-check-valve-The-Alloy-Valve-Stockist.JPGHeather Smith · CC BY 3.0
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  1 In Steam Globe Valve Parts 2019.jpgMairi Dulaney · CC BY-SA 4.0
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  Globe Control Valve.jpgBitjungle · CC BY-SA 4.0
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  Pressure gauges.jpgBitjungle · CC BY-SA 4.0
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  UV-Entkeimungsanlage.jpgDMdsW · CC0
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  CO2 Degassing&UV Sterilizer Tower.jpgFish Helper · CC BY-SA 4.0
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  Industrial instruments pressure gauge.jpgPalagiri · CC BY-SA 3.0
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  Membrane pump, polypropylene, 2016-10, pic01.jpgRoman Mifek · CC BY-SA 4.0
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  Floating level switch.JPGS.J. de Waard · CC BY 2.5
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  Aerated treatment lagoon at the AV Nackawic pulp mill.jpgQuintin Soloviev · CC BY 4.0
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  Reverse osmosis desalination plant.JPGJames Grellier · CC BY-SA 3.0
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  Fire tube steam boiler bahan bakar Gas LPG dan Solar winsketel.jpgDiemareng · CC BY-SA 4.0
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  Package Type Induced Draft Counter Flow Cooling Towers.jpgCenk Endustri · CC BY-SA 3.0
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  Jeyranbatan UF Water Treatment Plant.jpgLifekey23 · CC BY-SA 4.0