SeaRO-10 ERS (100 m3/day) SeaRO-20 ERS (250 m3/day) SeaRO-25 ERS (300 m3/d) SeaRO-42 ERS (500 m3/day) SeaRO-84 ERS (1000 m3/day) Seawater: The only long-term, completely reliable source of drinking water. Agua de mar: La unica fuente segura para obtener agua potable ahora y en el futuro.