The Ministry of the Environment have the following responsibilities:
- Environmental service matters.
- Policy matters on air and other forms of pollution.
- Beautification and development of open spaces in the State except horticulture.
- Control of outdoor advertisements and signposts.
- Field laboratory and geo-physical survey in conjunction with other stakeholders.
- Collation of data on industrial hazards and setting of standards.
- Monitoring of cemeteries.
- Liaison with NAFDAC, NDLEA, FMENV and Lagos State Environmental and Special Offences and Enforcement Unit on any related matter.
- Supervision of Lagos State Environmental Protection Agency (LASEPA), Lagos State Waste Management Agency (LAWMA), Lagos State Signage and Advertisement Agency (LASAA) and Lagos State Waste Water Management Office (LSWMO).
- Development, control and maintenance of public parks and gardens.
- Evaluation of Environmental Impact Assessment (EIA) and Environmental Audit Report (EAR).
- Control, management and monitoring of public toilets.
- Co-ordination of environmental sanitation exercise and protection services.
- Initiation, formulation, execution and monitoring of all issues relating to climate change towards mitigating the negative impact of climate change.
- Ground water hydrology.
- Control of water pollution and hyacinth.
- Identification and management of gullies and degraded areas.
- Preparation of master plan of drainage system in Lagos State.
- Collection and disposal of storm water.
- Supervision and management of donor agencies assisted projects.
- Development and management of drainage plans.
- Design, construction and maintenance of primary and secondary collectors.
- Supervision of projects on major channels being funded by World Bank.
- Laboratory services for sewage, water and environmental pollution.
- Control of water pollution and hyacinth.
- Treatment of waste water.
- Liaison with Water Corporation on other related matters.