By Hon. Prof. Kariuki Muigua, OGW, PhD, C.Arb, FCIArb is a Professor of Environmental Law and Dispute Resolution at the University of Nairobi, Member of Permanent Court of Arbitration, Leading Environmental Law Scholar, Respected Sustainable Development Policy Advisor, Top Natural Resources Lawyer, Highly-Regarded Dispute Resolution Expert and Awardee of the Order of Grand Warrior (OGW) of Kenya by H.E. the President of Republic of Kenya. He is the Academic Champion of ADR 2024, the African ADR Practitioner of the Year 2022, the African Arbitrator of the Year 2022, ADR Practitioner of the Year in Kenya 2021, CIArb (Kenya) Lifetime Achievement Award 2021 and ADR Publisher of the Year 2021 and Author of the Kenya’s First ESG Book: Embracing Environmental Social and Governance (ESG) tenets for Sustainable Development” (Glenwood, Nairobi, July 2023) and Kenya’s First Two Climate Change Law Book: Combating Climate Change for Sustainability (Glenwood, Nairobi, October 2023), Achieving Climate Justice for Development (Glenwood, Nairobi, October 2023), Promoting Rule of Law for Sustainable Development (Glenwood, Nairobi, January 2024) and Actualizing the Right to a Clean and Healthy Environment (Glenwood, Nairobi, March 2024)*
Any sound that bothers, irritates, or potentially harm a person’s ear is considered noise. Other definitions of noise include undesired, undesirable, and unpleasant sound. Environmental noise, as defined by the World Health Organization (WHO), is all noise, except noise from places of employment. Any unwelcome sound or group of noises that annoys people or could be harmful to their health is considered noise.
EMCA defines “noise” as any undesirable sound that is intrinsically objectionable or that may cause adverse effects on human health or the environment. Notably, EMCA also defines “pollutant” as including any substance whether liquid, solid or gaseous which—(a) may directly or indirectly alter the quality of any element of the receiving environment; (b) is hazardous or potentially hazardous to human health or the environment; and includes objectionable odours, radio-activity, noise, temperature change or physical, chemical or biological change to any segment or element of the environment.
Environmental noise pollution still poses a serious risk to people’s health and quality of life on a global scale. Urbanization, along with the accompanying rise in mobility and industrialization, has led to an amplification of noise in densely populated areas, increasing noise exposure. In a city, as the population grows, so does industrial activity to suit the demands of the populace. Hence, noise levels rise.
Building sites or traffic on the roads, trains, and in the air are significant sources of environmental noise exposure. Other sources of noise exposure include wind turbines and leisure activities like playing loud music or other audio content or participating in e-sports (video and computer game competitions).
In addition to increasing the risk of ischemic heart disease (IHD), hypertension, sleep disturbance, hearing impairment, tinnitus, and cognitive impairment, research shows that excessive noise can be annoying. There is also mounting evidence that excessive noise can have negative effects on mental health and birth outcomes.
Decibels are used to measure noise level (dB). Decibel levels increase as noise levels do. To accommodate human hearing, decibels can be changed. Decibels (dBA) is the unit of measurement for noise level. As a person is exposed to different levels of noise, different impacts result. Hearing loss can occur after years of being exposed to loud noises (75 dBA for eight hours each day).
The body can react to lower noise levels as well; for example, a 40 dBA outdoor noise can be enough to keep someone awake. Noise’s psychosocial effects on people include annoyance, which is the discomfort and disturbance that the person exposed to the noise experiences, as well as consequences on learning.
Noise pollution has various adverse effects on human health and thus poses a risk to the realisation of Article 42 of the Constitution of Kenya on the right to clean and healthy environment for all. As a result, it is important that all stakeholders join hands in addressing the menace for the sake of all, and promoting public health. It is not the time to point fingers and watch as the general populace suffers; both levels of government should respond to the cry for help from their citizens and address the problem of noise pollution.
National Environment Management Authority (NEMA) is responsible for implementing all environmental policies including Noise Pollution control. In this regard, NEMA has the authority to create rules, specify requirements and guidelines, and issue directives for prevention and protection from Noise Pollution. Notably, NEMA can delegate its functions under EMCA to any lead agency, being the oversight authority, and where it carries out a delegated duty, it can recover costs.
Kenyans have for a while suffered the menace of noise pollution especially after the promulgation of the 2010 Constitution, where there has been conflicting jurisprudence on which level of the Government between national and county governments is mandated to address noise pollution and other nuisances that affect the right to clean and healthy environment as far as far noise pollution is concerned.
*This is an extract from Kenya’s First Clean and Healthy Environment Book: Actualizing the Right to a Clean and Healthy Environment (Glenwood, Nairobi, January 2024) by Hon. Prof. Kariuki Muigua, OGW, PhD, Professor of Environmental Law and Dispute Resolution, Senior Advocate of Kenya, Chartered Arbitrator, Kenya’s ADR Practitioner of the Year 2021 (Nairobi Legal Awards), ADR Lifetime Achievement Award 2021 (CIArb Kenya), African Arbitrator of the Year 2022, Africa ADR Practitioner of the Year 2022, Member of National Environment Tribunal (NET) Emeritus (2017 to 2023) and Member of Permanent Court of Arbitration nominated by Republic of Kenya and Academic Champion of ADR 2024. Prof. Kariuki Muigua is a foremost Environmental Law and Natural Resources Lawyer and Scholar, Sustainable Development Advocate and Conflict Management Expert in Kenya. Prof. Kariuki Muigua teaches Environmental Law and Dispute resolution at the University of Nairobi School of Law, The Center for Advanced Studies in Environmental Law and Policy (CASELAP) and Wangari Maathai Institute for Peace and Environmental Studies. He has published numerous books and articles on Environmental Law, Environmental Justice Conflict Management, Alternative Dispute Resolution and Sustainable Development. Prof. Muigua is also a Chartered Arbitrator, an Accredited Mediator, the Managing Partner of Kariuki Muigua & Co. Advocates and Africa Trustee Emeritus of the Chartered Institute of Arbitrators 2019-2022. Prof. Muigua is a 2023 recipient of President of the Republic of Kenya Order of Grand Warrior (OGW) Award for his service to the Nation as a Distinguished Expert, Academic and Scholar in Dispute Resolution and recognized among the top 5 leading lawyers and dispute resolution experts in Band 1 in Kenya by the Chambers Global Guide 2024 and was listed in the Inaugural THE LAWYER AFRICA Litigation Hall of Fame 2023 as one of the Top 50 Most Distinguished Litigation Lawyers in Kenya and the Top Arbitrator in Kenya in 2023.
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