Journal profile · Environmental Science-Water Science and Technology
Aqua
ISSN 2709-8028 · eISSN 2709-8036 · IWA Publishing · United Kingdom
Aqua: CAS Zone 4 · Environmental Science & Ecology (2025 upgraded edition); impact factor 2.6 (journal website); fully open access; no APC; review about 20 weeks (community reports); 46 articles in 2025; indexed in Scopus.
Scope
Aims, scope and focus
Aqua is published by IWA Publishing and is in Zone 4 of Environmental Science & Ecology in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Water Systems and Optimization, Water Treatment and Disinfection and Water resources management and optimization, together about 37.8% of its articles. Its main subfields are Water Science and Technology. (generated from OpenAlex topic counts and CAS ranking data)
Aims and Scope | AQUA - Water Infrastructure, Ecosystems and Society | IWA Publishing Journal Scope AQUA - Water Infrastructure, Ecosystems and Society publishes peer-reviewed scientific and technical research that proposes innovative solutions for the sustainable management, treatment and use of water resources as well as reviews across a wide range of disciplines. Wide-ranging in scope and international in remit, AQUA supports innovation at the...
From the journal's Aims & Scope
Research area (LetPub): Environmental Science-Water Science and Technology
Editor-in-chief Shuming LiuPublisher website
Editorial board by country: 2 in mainland China (about 67%); most named Mainland China 2, Canada 1 (3 members with a country) Editorial board ↗Publisher website ·
Main research topics OpenAlex counts of recent articles; shares are approximate
- Water Systems and OptimizationEngineering14.7%
- Water Treatment and DisinfectionEnvironmental Science13.5%
- Water resources management and optimizationEngineering9.5%
- Urban Stormwater Management SolutionsEnvironmental Science6.1%
- Membrane Separation TechnologiesEnvironmental Science5.5%
- Wastewater Treatment and ReuseEnvironmental Science4%
- Water Quality and Pollution AssessmentEnvironmental Science3.9%
- Water-Energy-Food Nexus StudiesEnvironmental Science3.5%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Environmental Science & Ecology Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Environmental Science & Ecology | Zone 4 |
| Minor | Engineering, Civil | Zone 4 |
| Minor | Water Resources | Zone 4 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Environmental Science & Ecology Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Environmental Science & Ecology | Zone 4 |
| Minor | Engineering, Civil | Zone 3 |
| Minor | Water Resources | Zone 3 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Environmental Science & Ecology Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Environmental Science & Ecology | Zone 4 |
| Minor | Engineering, Civil | Zone 4 |
| Minor | Water Resources | Zone 4 |
Top journal: noReview journal: no
Database indexing
ScopusLetPub
International journal early-warning lists: not listed in any editionLetPub
Indexing the journal's website claims
Web of ScienceDOAJPublisher website
As the journal's website lists them, not checked against each database; for Web of Science editions the records above apply.
Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.
Metrics
Impact metrics and publication volume
Impact
- Impact factor (publisher)
- 2.6Publisher website ·
- CiteScore 2026-06
- 5.6LetPub ·
- SJR 2026-06
- 0.64LetPub ·
- SNIP 2026-06
- 0.89LetPub ·
- h-index
- 66OpenAlex ·
- i10-index
- 802OpenAlex ·
- 2-year mean citedness
- 3.96OpenAlex ·
- Share of gold OA articles
- 0%LetPub ·
Articles by year OpenAlex count · 1,900 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 41 | 17 | 8 |
| 2025 | 46 | 46 | 74 |
| 2024 | 165 | 165 | 916 |
| 2023 | 157 | 157 | 1,359 |
| 2022 | 94 | 94 | 815 |
| 2021 | 96 | 94 | 1,130 |
Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.
Review & acceptance
Review time and acceptance
- Average review time (community reports)
- about 20 weeksLetPub ·
- Peer review
- Anonymous peer reviewLetPub
Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.
Fees & open access
APC and open-access policy
Fully open accessLetPub
Every article is open access; authors usually pay an article processing charge (APC).
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| LetPub | No APC | Yes | — |
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Profile
Publication details and official links
- Publisher
- IWA Publishing
- Country or region
- United Kingdom
- Language
- English
- ISSN
- 2709-8028
- Electronic ISSN
- 2709-8036
- Society / sponsor
- International Water Association
- Latest issue on the website
- Volume 75, Issue 8 (August 2026)
- Official links
- Journal homepage ↗LetPub
- Submission system ↗Publisher website
- Author guidelines ↗LetPub
- Aims & Scope ↗LetPub
- Special issues ↗Publisher website
- Peer review process ↗LetPub
- Editorial board ↗LetPub
FAQ
Frequently asked questions about Aqua
What CAS zone is Aqua in?
In the 2025 upgraded edition of the CAS Journal Ranking, Aqua is in Zone 4 of Environmental Science & Ecology, and in Zone 4 of the minor category Engineering, Civil / Water Resources. In the 2026 Xinrui edition it is in Zone 4 of Environmental Science & Ecology. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Aqua?
The journal's website gives an impact factor of 2.6; this is the journal's own figure, as LetPub lists none for it; CiteScore 5.6, h-index 66.
How long does peer review take at Aqua?
Authors report an average review time of about 20 weeks. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
Where are the editorial board members of Aqua based?
Of the 3 board members whose country the journal's board page names, 2 (about 67%) are in mainland China; the countries named most often are Mainland China (2) and Canada (1). Counted from the institutions listed on the board page; for reference only.
Which databases index Aqua?
According to LetPub and DOAJ records, Aqua is indexed in Scopus. The journal's website also lists Web of Science and DOAJ; that list has not been checked against each database.
Is Aqua open access, and what is the APC?
Aqua is a fully open-access journal. It charges no article processing charge.
Sources and updates
The facts on this page come from LetPub, OpenAlex, Publisher website; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-25). Last updated: .