FG warns of toxic groundwater in Kogi, Lagos, Kebbi

The Federal Government has raised alarms over unsafe groundwater in Kogi, Lagos, and Kebbi states, following recent assessments revealing chemical and microbial contamination in several communities.

The Nigeria Hydrological Services Agency (NiHSA) disclosed the findings during a press briefing in Abuja. Director-General Umar Mohammed said samples from wells and boreholes in affected areas showed dangerously high levels of lead, cadmium, nitrite, fluoride, and harmful microorganisms.

He warned that these pollutants, caused by sewage infiltration, waste leaching, and corroded pipelines, pose serious health risks, including neurological damage, kidney complications, blue-baby syndrome, and bone and dental deformities.

In Lokoja, Kogi, lead concentrations ranged from 0.56 to 12.0 mg/L—far above safe limits—while E. coli, Streptococcus, and Salmonella were detected, indicating faecal contamination and heightened risk of waterborne diseases.

NiHSA attributed some pollution to damaged drainage systems and floodwater intrusion, particularly in riverine areas.

In Lagos, areas such as Ikeja and Ikoyi recorded both chemical and microbial contamination. In Kebbi, Argungu Local Government Area showed arsenic levels between 0.75 and 4 mg/L, with prolonged exposure potentially causing arsenicosis, liver damage, and severe intestinal illnesses.

Water engineer Mathew Ajisafe urged residents in the affected communities to stop using well and borehole water until it is declared safe, while calling on state governments to provide treated water through existing water boards.

Acting Director of Hydrogeophysics at NiHSA, Sunday Husseini, said the agency has briefed Lagos, Kogi, and Kebbi state governments.

Kebbi has agreed to a comprehensive study to identify contamination hotspots and integrate water treatment facilities into supply schemes. Discussions with Lagos and Kogi are ongoing.

Husseini noted that NiHSA is also developing hydrological regulations to strengthen water quality management, reduce disaster risks, and integrate monitoring with flood forecasts.

He urged Nigerians to heed official warnings, follow safe water practices, and cooperate with authorities to protect public health.