Trusted by Municipal Engineering Partners

Field-verified retention designs and permeability data relied upon by public works departments across Nigeria.

Lagos State Drainage Authority · 2024 92% retention compliance rate

Our soil permeability mapping for the Ikeja retention basin reduced post-construction infiltration variance to ±6% against the Water Resources Act Section 12 thresholds.

Kano Urban Water Board · 2023 34% peak runoff reduction

Subsurface gallery design based on Tasology’s geotechnical survey achieved a stable 0.8 m/day infiltration rate over 12 months, exceeding the project’s target by 12%.

Abuja FCT Water Resources Dept. · 2025 Zero permit rejections

All seven retention plans submitted under the National Water Resources Policy received approval on first review, attributed to our pre-submission compliance checklists.

Port Harcourt Municipal Works · 2024 2.1× faster site approval

Integrated permeability reports shortened the environmental impact assessment phase from 14 weeks to 6.5 weeks, saving the contractor ₦4.2M in idle time.

Oyo State Rural Water Supply · 2023 100% retention structure durability

Post-construction monitoring of 12 detention basins designed with Tasology’s lateritic soil data showed zero structural failure after two rainy seasons.

Client Feedback on Retention Projects

Municipal engineers and planners share measurable outcomes from our hydro-engineering work across Nigeria.

"The subsurface retention gallery in Kano reduced our peak runoff by 34% within the first six months. The monitoring well data confirmed a stable infiltration rate of 0.8 m/day, which matched the pre-construction model within 5% tolerance."

Chinedu Olutola, Senior Engineer, Kano State Urban Drainage Program

"Tasology's soil permeability mapping for our Lagos basin project identified three critical lateritic layers that standard surveys had missed. This directly prevented a retention basin failure during the 2023 wet season."

Adedayo Kayode Oluwatosin, Project Manager, Lagos Municipal Water Authority

"The compliance checklist aligned with the Water Resources Act saved us six weeks of permit processing. The geotechnical screening recommendations became part of our standard pre-construction protocol."

Isioma Sumayyah Wilcox, Director of Infrastructure, Oyo State Planning Commission
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