NECC has investigated complaints in the Nairobi Region as from 31st July to 9th August 2019 as tabulated below:
| Location | Nature of complaint |
| Bogani, Karen, Nairobi county | Poor waste management |
| Hunter Road, near Shunja Supermarket, Kasarani Nairobi County | Discharge of effluent into environment |
| Langata Road, Karen | Objection to change of user |
| Ngong road, Karen | Objection to change of user |
| Kahawa Sukari, Nairobi County | Environmental pollution by gas emission |
| Karen, Nairobi County | Noise from bars in Residential areas |
| Magenta Close, Karen | Damage of roads and drainage system by water bourses |
| Ridgeways lane, Garden Estate | Construction of a church hall in a residential area |
| Skyline, Embakasi | Falling of stones from construction activities |
| Highway Estate, South C | Release of sewage in the open environment |
| Skyline, Embakasi | Falling of stones from construction activities |
| Utawala, Nairobi County | Discharge of waste water |
| South C, Nairobi county | Construction of a Hotel next to residential areas |
| Dandora, Nairobi County | Toxic fumes from Dandora dumpsite |
| Kayole, Nairobi County | Sewage from toilets directed into Nairobi River |
| Njiru, Nairobi County | Discharge of sewage into storm drainages |
| Ruai, Nairobi County | Encroaching of the riparian area and blockage of access to homes |
| South B, Nairobi County | Haphazard dumping |
| South B, Nairobi County | Dumping next to a road |
| Luckysummer, Nairobi County | Noise pollution from a church’s activities |
| Dagoretti Market, Nairobi County | Pollution from operations of a tannery |
Insights into some complaints are below:
Materials from a stopped Construction of a church hall in a Ridgeways area
Meeting with Karen & Langata District Association on noise and change of user issues in the area
Discharge of waste water and its leakage from underground in Utawala (Masters Court)
