Kualitas air
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Drinking water quality guidelines - World Health Organization
UNEP Global Environmental Monitoring System (GEMS) Water Programme Diarsipkan 2005-02-09 di Wayback Machine.
The National River Health Programme - South Africa
Water policy in the European Union
U.S. Centers for Disease Control and Prevention (CDC) - Drinking water quality and testing
U.S. National Water Quality Monitoring Council (NWQMC) - Partnership of federal and state agencies
U.S. Geological Survey - National Water Quality Assessment Program
U.S. Environmental Protection Agency - Water Quality Monitoring
U.S. National Agricultural Library Diarsipkan 2007-10-10 di Wayback Machine.
American Water Resources Association Diarsipkan 2018-03-24 di Wayback Machine.
Purdue University Safe Water Guidelines
Global Water Quality online database
Beaches 911 - U.S. Beach Water Quality Monitoring  Diarsipkan 2008-08-20 di Wayback Machine.
NutrientNet, an online nutrient trading tool developed by the World Resources Institute, designed to address nutrient-related water quality issues. See also the PA NutrientNet Diarsipkan 2016-03-03 di Wayback Machine. website designed for Pennsylvania's nutrient trading program.
eWater Cooperative Research Centre - Australian Government funded initiative supporting water management decision support tools
MolluSCAN eye Diarsipkan 2016-11-13 di Wayback Machine. website designed by the CNRS and the University of Bordeaux, France. Online biomonitoring of water quality by a 24/7 record of various bivalve molluscs' behavior and physiology worldwide (biological rhythms, growth rate, spawning, daily behavior)
news.unair.ac.id - GO CLEVER, Inovasi Mahasiswa FST Mudahkan Deteksi Kualitas Air Sungai
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Polusi udara:  Hujan asam  Indeks kualitas udara  Permodelan persebaran atmosferik  Klorofluorokarbon  Kualitas udara dalam ruangan  Peredupan global  Destilasi global  Pemanasan global  Penipisan ozon  Atmospheric particulate matter  Smog 
Polusi air:  Dampak lingkungan dari produk farmasi dan perawatan diri  Dampak lingkungan dari perkapalan  Pemantauan lingkungan  Eutrofikasi  Parameter kualitas lingkungan air tawar  Hipoksia  Puing lautan  Polusi laut  Pengasaman lautan  Tumpahan minyak  Aliran permukaan  Polusi termal  Aliran perkotaan  Air limbah  Kualitas air  Stagnasi air  Penyakit melalui air 
Kontaminasi tanah:  Bioremediasi  Fitoremediasi  Herbisida  Pestisida 
Kontaminasi radioaktif:  Aktinida di lingkungan  Radioaktivitas lingkungan  Produk fisi  Nuclear fallout  Plutonium di lingkungan  Keracunan radiasi  Radium di lingkungan  Uranium di lingkungan 
Jenis polusi lainya:  Pulau panas perkotaan  Degradasi lahan  Polusi cahaya  Polusi suara  Polusi spektrum radio  Polusi penglihatan 
Perjanjian internasional:  Konvensi Basel  CLRTAP  Protokol Kyoto  Konvensi MARPOL  Protokol Montreal  OSPAR  Konvensi Stockholm 
Organisasi utama:  Basel Action Network  DEFRA  Environment Agency (England and Wales)  Scottish Environment Protection Agency (Scotland)  U.S. EPA  EEA  Greenpeace 
Pengukur kualitas air otomatis di Sungai Milwaukee, Wisconsin
Spektrometer kromatografi gas dapat digunakan untuk mengukur pestisida dan polutan organik lainnya
Alat pengukur elektrokonduktivitas secara tidak langsung mengukur padatan terlarut