Journal profile · Environmental Science-Water Science and Technology
npj Clean Water
ISSN 2059-7037 · Springer Nature · ENGLAND · Founded 2018
npj Clean Water: CAS Zone 2 · Engineering (2025 upgraded edition); impact factor 10.95; fully open access; APC about USD 4,090; median 73 days to acceptance (102 articles, last 24 months); 115 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
npj Clean Water is published by Springer Nature and is in Zone 2 of Engineering in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Membrane Separation Technologies, Membrane-based Ion Separation Techniques and Solar-Powered Water Purification Methods, together about 29.2% of its articles. Its main subfields are Water Science and Technology. (generated from OpenAlex topic counts and CAS ranking data)
Find out about the journal's aims and scope. Supporting the Sustainable Developmental Goals We are proud to acknowledge that over 50% of the articles published in npj Clean Water in 2025 were related to one or more of the 17 Sustainable Development Goals (SDGs). Springer Nature supports the SDGs through a dedicated SDG Programme and is a signatory of the SDG Publishers Compact.
From the journal's Aims & Scope
Research area (LetPub): Environmental Science-Water Science and Technology
Main research topics OpenAlex counts of recent articles; shares are approximate
- Membrane Separation TechnologiesEnvironmental Science16.6%
- Membrane-based Ion Separation TechniquesEngineering6.6%
- Solar-Powered Water Purification MethodsEnergy6%
- Child Nutrition and Water AccessNursing5.6%
- Advanced Photocatalysis TechniquesEnergy5.1%
- Wastewater Treatment and Nitrogen RemovalEnvironmental Science5.1%
- Water Treatment and DisinfectionEnvironmental Science5%
- Wastewater Treatment and ReuseEnvironmental Science4.8%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Engineering Zone 2
| Level | Category | Zone |
|---|---|---|
| Major | Engineering | Zone 2 |
| Minor | Engineering, Chemical | Zone 1 |
| Minor | Water Resources | Zone 1 |
| Minor | Environmental Sciences | Zone 2 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Engineering Zone 1
| Level | Category | Zone |
|---|---|---|
| Major | Engineering | Zone 1 |
| Minor | Engineering, Chemical | Zone 1 |
| Minor | Environmental Sciences | Zone 2 |
| Minor | Water Resources | Zone 1 |
Top journal: yesReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Engineering Zone 1
| Level | Category | Zone |
|---|---|---|
| Major | Engineering | Zone 1 |
| Minor | Engineering, Chemical | Zone 1 |
| Minor | Water Resources | Zone 1 |
| Minor | Environmental Sciences | Zone 2 |
Top journal: noReview journal: no
Database indexing
SCIEScopusDOAJLetPub
International journal early-warning lists: not listed in any editionLetPub
Indexing the journal's website claims
EI CompendexINSPECCASCAB AbstractsCurrent ContentsPublisher website
Other: Google Scholar, ProQuest, Dimensions, CNKI, Baidu, Astrophysics Data System, Naver, OCLC, Portico, CLOCKSS, Semantic Scholar
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
- 10.95LetPub ·
- CiteScore 2026-06
- 16.6LetPub ·
- SJR 2026-06
- 2.15LetPub ·
- SNIP 2026-06
- 1.97LetPub ·
- h-index
- 70OpenAlex ·
- i10-index
- 411OpenAlex ·
- 2-year mean citedness
- 14.12OpenAlex ·
- Self-citation rate
- 1.8%LetPub ·
- Share of gold OA articles
- 100%LetPub ·
Volume
- Articles per year
- 113LetPub ·
- Articles per year (publisher)
- 2,025Publisher website ·
Articles by year OpenAlex count · 636 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 95 | 95 | 120 |
| 2025 | 115 | 115 | 1,817 |
| 2024 | 133 | 133 | 2,907 |
| 2023 | 80 | 80 | 3,149 |
| 2022 | 69 | 69 | 3,692 |
| 2021 | 53 | 53 | 4,437 |
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
Review time from article dates manuscript dates registered with Crossref · to
73 daysMedian, submission to acceptance · P25–P75 56 days – 94 days
- Acceptance to online
- median 16 days (102 articles)
- Submission to online
- median 100 days
- Sample
- 102 articles with submission and acceptance dates (247 in the window); the latest was accepted on
Only articles that were accepted and published are counted, not the time spent on rejected manuscripts, so this usually runs longer than a publisher's "time to first decision".
Other sources
- Average review time (community reports)
- about 5 weeksLetPub ·
- Submission to publication (journal-reported)
- about 5 weeksDOAJ ·
- Peer review
- Single anonymous peer reviewDOAJ
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 accessDOAJ
Every article is open access; authors usually pay an article processing charge (APC).
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| DOAJ | EUR 3,290 / USD 4,090 / GBP 2,990 | Yes | CC BY, CC BY-NC-ND | |
| OpenAlex | USD 3,890 / EUR 3,190 / GBP 2,890 | — | — | |
| LetPub | GBP 2,690 / USD 3,590 / EUR 2,990 | Yes | — |
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Submission
Article types and submission policies (journal website)
Policy excerpts from the journal's websiteOpen access
- Open access Open Access
npj Clean Water is a fully open access journal. More on Creative Commons Attribution licenses and the benefits of publishing open access can be found in this section.
Source ↗Publisher website ·
Excerpts are quoted from the journal's website; "model summary" lines are written by Workers AI and checked against the text. The journal's website is authoritative.
Profile
Publication details and official links
- Publisher
- Springer Nature
- Country or region
- ENGLAND
- Language
- English
- Founded
- 2018
- ISSN
- 2059-7037
- Official links
- Journal homepage ↗LetPub
- Submission system ↗Publisher website
- Author guidelines ↗LetPub
- Aims & Scope ↗LetPub
- Special issues ↗Publisher website
- APC information ↗DOAJ
- Fee waivers ↗DOAJ
- Open access statement ↗DOAJ
- License & copyright ↗DOAJ
- Peer review process ↗LetPub
- Editorial board ↗LetPub
- Plagiarism policy ↗DOAJ
FAQ
Frequently asked questions about npj Clean Water
What CAS zone is npj Clean Water in?
In the 2025 upgraded edition of the CAS Journal Ranking, npj Clean Water is in Zone 2 of Engineering, and in Zone 1 of the minor category Engineering, Chemical / Water Resources / Environmental Sciences. In the 2026 Xinrui edition it is in Zone 1 of Engineering. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of npj Clean Water?
The latest impact factor listed by LetPub is 10.95; CiteScore 16.6, h-index 70.
How long does peer review take at npj Clean Water?
Based on the dates recorded on 102 articles published between October 2024 and October 2026 (the last 24 months), the median time from submission to acceptance is 73 days (interquartile range 56–94 days); authors report an average review time of about 5 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.
Which databases index npj Clean Water?
According to LetPub and DOAJ records, npj Clean Water is indexed in SCIE, Scopus and DOAJ. The journal's website also lists EI Compendex, INSPEC, CAS, CAB Abstracts and Current Contents; that list has not been checked against each database.
Is npj Clean Water open access, and what is the APC?
npj Clean Water is a fully open-access journal. APC about USD 4,090.
Sources and updates
The facts on this page come from LetPub, OpenAlex, DOAJ, 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 2026-08-26). Last updated: .