Bangladesh Water Resources Overview, 2020
Bangladesh is a large delta-state where the three major rivers Ganges, Brahmaputra, and Meghna (GBM) converge into one basin. Annual inflow is estimated at 1.2 trillion m³, ranking third globally, but severe dry-season shortages occur between November and April. Safe water access stands at 97% in improved sources for a population of 169 million, while arsenic contamination in groundwater affects around 35 million people, a scale often described as one of the largest mass poisonings globally.
Utility coverage in urban areas is 85% and in rural areas 60%, while sewerage treatment remains at only 3%. Dhaka's daily demand is 2.5 billion liters, while supply is about 2.2 billion liters, creating a 12% gap. Excessive groundwater extraction is lowering aquifer levels by 2 to 3 meters per year. Irrigated area reaches 70% of cultivated land and is the backbone of agriculture, but heavy dependence on groundwater at 80% remains a structural issue. For Korean water companies, opportunities include water treatment, sewerage treatment, irrigation systems, and smart water management. EDCF borrowing support is a key funding pillar.
Water Challenges and Arsenic Contamination
Bangladesh's three major water challenges are arsenic contamination, groundwater depletion, and water quality degradation. Since its detection in the 1990s, arsenic levels exceeding WHO limits (10 μg/L) have been recorded in 52 out of 64 districts, effectively covering roughly 80% of the country. Chronic arsenic poisoning can trigger skin disorders, cancer, and cardiovascular disease, making this a severe public health crisis. In Dhaka, groundwater level has fallen more than 70 meters from 1990, pushing extraction costs upward and raising subsidence risk. The shift toward surface-water sourcing for treatment requires expanded treatment infrastructure, but financing constraints are still major bottlenecks. Untreated municipal and industrial wastewater discharge is also raising river pollution to critical levels, with Buriganga River in Dhaka showing BOD above 50 mg/L, a severe ecological distress signal.
| Item | Urban | Rural | National | 2030 Target | Issues | Notes |
|---|---|---|---|---|---|---|
| Drinking Water Access | 98% | 96% | 97% | 100% | Arsenic, bacteria | SDG 6 |
| Safe Drinking Water | 60% | 40% | 48% | 100% | Arsenic free | WHO standard |
| Water Supply | 85% | 60% | 68% | 90% | Aged pipes, leakage | Leakage 30% |
| Sewerage Treatment | 20% | <1% | 3% | 30% | Insufficient capacity | Untreated discharges |
| Sanitation | 80% | 65% | 70% | 100% | Open defecation 4% | ODF target |
| Irrigation | — | 70% | 70% | 85% | Groundwater depletion | Shift to surface-water |
| Arsenic Exposure | 15% | 30% | 25% | <5% | 35M affected | Adsorption, filtration |
Sewerage Infrastructure and Investment Demand
Investment shortages in Bangladeshi wastewater and utility systems are severe. Dhaka WASA (water utility) currently supplies 2.2 billion liters per day but faces 2.5 billion liter demand, resulting in a 12% deficit. A 30% leakage ratio means a third of supplied water is lost. With 78% of water still groundwater-dependent, falling aquifer levels make a surface-water transition unavoidable. Saidabad Water Treatment Plant phases 1-3, built with Korean EDCF support, is the anchor project for this shift. At only 3%, sewerage treatment remains critically low. Dhaka's sole Pagla plant (120,000m³/day) handles merely around 20% of city wastewater volume. Untreated industrial wastewater from the Hazaribagh leather cluster (2,000 factories) continues as a recurring ecological issue. Sewerage demand is estimated above $10 billion, making this one of the largest growth markets for Korean treatment providers.
Korean Market Entry Opportunities in Water Resources
Although Bangladesh has very high total water inflow, ranking third globally in annual runoff, the system faces a triple challenge: arsenic contamination of 35 million people, groundwater decline, and severe wastewater treatment deficits at 3%. Dhaka has fallen more than 2 to 3 meters per year in groundwater level, while water losses from leakage remain high. Korea has already built a substantial ODA footprint through EDCF projects such as Saidabad, totaling over $500 million, and has strong follow-on demand for provincial water supply and wastewater expansion. Opportunities remain in arsenic removal, smart water operations, and industrial wastewater treatment. Water management is becoming a core infrastructure intersection of health, agriculture, and environmental policy, where Korean technology and project execution are likely to remain highly competitive.