申請人須–
（a）（i）在自然科學的學科中，考獲本港大學頒發的一級或二級榮譽學士學位，或具同等學歷，主修海洋或淡水生態學、水生生物學、環境化學、生態毒理學、海洋學或水文學，並在畢業後取得三年與環境水質、水污染或污水管理有關的適當職責經驗，當中至少兩年須與水生生物學、藻類學、水或淤泥化學、水生毒理學或相關科目有關；或
（ii）在一九七五年十二月五日之後，獲選為香港工程師學會相關專業界別（請參閱註（1））的正式會員，或具同等資格，並在環境水質、水污染或污水管理方面，曾經接受培訓或具備適當職責經驗達三年，當中至少兩年須與水生生物學、水或淤泥化學、水生毒理學或相關學科有關（不一定在成為會員後才取得）；
（b）在綜合招聘考試的能力傾向測試試卷獲取及格成績；
（c）符合語文能力要求，在綜合招聘考試的兩張語文試卷（中文運用及英文運用）中取得二級成績，或同等成績（請參閱註（2））；以及
（d）在《基本法及香港國安法》測試取得及格成績（請參閱註（3））。

Candidates should have –
(a)(i) a Hong Kong First or Second Class honours degree, or equivalent, in a natural science subject with major in marine or freshwater ecology, aquatic biology, environmental chemistry, ecotoxicology, oceanography or hydrology, and three years’ post-graduate experience at an appropriate level of responsibility relevant to environmental water quality, water pollution or waste water management, with at least two years relevant to aquatic biology, phycology, aquatic or sediment chemistry, aquatic toxicology or related subjects; or
(ii) Corporate Membership of the Hong Kong Institution of Engineers of a relevant discipline (see Note (1)) elected after 5 December 1975, or equivalent, and three years’ training or experience at an appropriate level of responsibility relevant to environmental water quality, water pollution or waste water management, with at least two years relevant to aquatic biology, aquatic or sediment chemistry, aquatic toxicology or related subjects (not necessarily obtained after Membership);
(b) a pass result in the Aptitude Test (AT) in the Common Recruitment Examination (CRE);
(c) met the language proficiency requirements of Level 2 in the two language papers [Use of Chinese (UC) and Use of English (UE)] in the CRE, or equivalent (See Note (2)); and
(d) a pass result in the Basic Law and National Security Law Test (BLNST) (See Note (3)).