This aim of this paper is to analyse descriptively the attitude, descriptive norm, injunctive norm, and environmental knowledge in the research scope of the intention to practise solid waste segregation-at-source. 400 respondents living in the townships of the nine districts of Selangor, namely Sabak Bernam, Ulu Selangor, Kuala Selangor, Gombak, Ulu Langat, Petaling, Klang, Kuala Langat, and Sepang, were employed via a multistage sampling method to carry out this research. A self-administered bilingual questionnaire was used to collect quantified research data among respondents in order to examine their intention to practise solid waste segregation-at-source in daily routine. The descriptive analysis of the current quantitative data was then analysed using IBM SPSS Statistics Version 26.0. The results of the descriptive investigation inferred that, overall, the Selangor households surveyed were perceived to have a favourable attitude, a high level of intention to practise solid waste segregation-at-source and environmental knowledge but moderately influenced by the descriptive norm and injunctive norm throughout the research. The present research has played a significant role in enriching the existing scarce and limited Malaysian literature on the intention to practise the solid waste segregation-at-source.