Without taking into account its liability to failure by freezing in winter, its present unfitness for domestic use without thorough and expensive mechanical filtration, and its probably present and certain future dangerous contamination by sewage, this source of supply may be considered important for quantity and accessibility. | Without taking into account its liability to failure by freezing in winter, its present unfitness for domestic use without thorough and expensive mechanical filtration, and its probably present and certain future dangerous contamination by sewage, this source of supply may be considered important for quantity and accessibility. |