The high scientific standards maintained by Journal of Water and Health in its papers owe much to the continuing dedication of the journal's reviewers, who give freely of their time and expertise. IWA Publishing is pleased to pay tribute to this contribution by recognizing those who have participated in the review process. Thus, the Editors of Journal of Water and Health acknowledge with particular gratitude the following reviewers who have reviewed papers during the period January 2018–December 2018.
| Bene Abbey | Ricardo Deus | Motoyuki Kamata | Hideaki Nagare | Nobutaka Shirasaki |
| Pamela Abbott | Rafik Dey | Panagiotis Karanis | Tomohiro Nakanishi | Ryan Sinclair |
| Sawsan Abd El Samie | Sina Dobaradaran | Lilian Karla de Oliveira | David Nelson | Kwanrawee Sirikanchana |
| Avner Adin | Maura Donohue | Tomonori Kawakami | P.V. Nidheesh | Patrick Smeets |
| Mansoor Ahammed | Samuel Dorevitch | David Kay | Yukiko Nishiuchi | Charlotte Smith |
| Warish Ahmed | Aniekan Edet | Regina Keller | Daniel Ekane Nnane | James Smith |
| Masaatsu Aichi | Maria Efstratiou | Bruce Keswick | Ify Nwaogazie | Fernando Spilki |
| Muhammad Ali | Markus Egert | Ranjiv Khush | Leslie Ogorzaly | Gerard Stelma Jr. |
| Jose Alonso | Stephen Estes-Smargiassi | Zenichiro Kimura | Kumiko Oguma | Maronel Steyn |
| Olufemi Aluko | Craig Evans | Erica Kintz | Yumiko Okochi | Timothy Straub |
| Absar Alum | Joseph Falkinham | Julie Kinzelman | Tsutomu Okubo | Cristiane Surbeck |
| Mohan Amarasiri | Zhixuan Feng | Thomas Kistemann | Serra Olvare | Yuji Suzuki |
| Henrik Andersen | Michael Ferguson | Masaaki Kitajima | Mamoru Oshiki | Fumihiko Takeda |
| Maria Cristina Angelici | Ingrid Friesema | Kalmia Kniel | Kazuyuki Oshita | Shuhei Tanaka |
| Rosa Maria Araujo | Manabu Fujii | Yukako Komaki | Stephanie Painter /Brady | Wai Thoe |
| Yasin Arslan | Amanda Garcia-Williams | Koji Kosaka | Melissa Palos Ladeiro | Alberto Tiraferri |
| Janick Artiola | Ronald Gehr | Frantisek Kozisek | Chrissanthy Papadopoulou | Ilias Tirodimos |
| Yasuhiro Asada | Richard Gelting | Kengo Kubota | Genandrialine Peralta | Akihiro Tokai |
| Daniel Axelrad | B Genthe | Rudresh Kumar | Stacy Pfaller | Gary Toranzos |
| Sung Woo Bae | Eline Gonçalves | Tokihiro Kurita | Konstantinos Plakas | Simoni Triantafyllidou |
| Mehdi Bahrami | Pilar Goñi | Vincenza La Fauci | Katarzyna Przybyla-Kelly | Neşe Tüfekçi |
| Xiaohui Bai | Michael Goodman | Iain Lake | Geoffrey Puzon | Ourania Tzoraki |
| Katherine Baker | Wilhelm Grabow | Daniele Lantagne | Ataur Rahman | Shunichi Urayama |
| Jason Barrett | Neil Grigg | Dan Lapworth | Surapong Rattanakul | Vedat Uyak |
| Michael Bartholomew | Jenny Gronwall | Anna Lass | Peter Ravenscroft | Stephanie Velegol |
| Pascal Beaudeau | Patrick Gurian | Susanne Lee | Maria Tereza Pepe Razzolini | Angelica Vieira |
| Walter Betancourt | Akira Hafuka | Heng Liang | Brian Reed | J. Vila |
| Cornelius Bezuidenhout | Kamilia Hagagg | Jenyuk Lohwacharin | Geeta Rijal | Marta Vivar |
| Enver Baris Bingol | Mona Hanna-Attisha | Jacob Lorenzo-Morales | Lucy Robertson | Xiaodong Wang |
| Anicet Blanch | Marja-Liisa Hanninen | Thuy Ly Bich | David Roser | Toru Watanabe |
| Alexandria Boehm | Hidenori Harada | Naji Mahat | Μichael Ryan | Malgorzata Wojtkowska |
| Paola Borella | Angela Harris | Konstantinos Makris | Hodon Ryu | James Wright |
| Ayla Bozdağ | Shinsuke Haruta | Simon Mamuya | Ross Sadler | Chen Xijuan |
| John Brooks | Ayumi Hashiguchi | Frederick Masangkay | Masaki Sagehashi | Xuesong Xu |
| Joe Brown | Atsushi Hashimoto | Taku Matsushita | Hiroshi Sakai | Toshiro Yamada |
| Zia Bukhari | Akihiko Hata | Athena Mavridou | Oscar Samuelsson | Hiroshi Yamamoto |
| Gary Burlingame | Kai He | René Mayer | Tasha Santiago-Rodriguez | Hiroshi Yamamura |
| Paul Byleveld | Janet Hering | Graham McBride | Ricardo Santos | Nobuhito Yasui |
| Mario Cerroni | Wim Hijnen | John Scott Meschke | David Sartory | Keunje Yoo |
| Silvia Cervero-Arago | Hiroshi Hirotani | Michael Messner | Lauren M. Sassoubre | Chihiro Yoshimura |
| Kwok Wing Chauret | Christiane Holler | James Mihelcic | Michael Schock | Tamim Younos |
| Christian Chauret | Bilqis Hoque | Iori Mishima | Mary Schoen | Xin Yu |
| Sylvia Checkley | Guy Howard | Takayuki Miura | Anthony Schroeder | Charifa Zemouri |
| Rong Chen | Yongyou Hu | Taro Miyoshi | Ali Sdiri | Gaoke Zhang |
| Jeni Colbourne | Guanghui Hua | Guizani Mokhtar | Ryan Searcy | Xiangru Zhang |
| Jennifer Cooper | Guohe Huang | Omid Moradi | Arsalan Sepehri | Yingjie Zhang |
| Gunther Craun | Masaru Ihara | Jesús Mora-Rodríguez | Shohreh Shahmahmoodi | Wei Zhao |
| Aidan Cronin | Satoshi Ishii | Yolanda Moreno | Pramoda Kumar Shetty | Xinqing Zhao |
| David Cunliffe | Nao Ishikawa | Richard Muirhead | Dai Shimazaki | |
| Sabino De Gisi | Hiroaki Ito | Jennifer Murphy | Gwy-Am Shin | |
| Elham Derakhshani | Slaven Jozić | Heather Murphy | Mayura Shinde |