HYDROLOGY OF NEW YORK 



847 



(1) 



(2) 



(3) 



Aimnonia, albuminoid 



none 



none 



none 



Nitrites . 



Nitrates 



Hardness 



21.50 



none 



none 



21.00 



none 



none 



21.00 



none 



none 



The preceding analyses show that the quality of the water is, 

 from a sanitary point of view, quite beyond reproach. Chemical, 

 microscopical and bacteriological examinations have been made 

 and all point to the same conclusion — that this water is safe for 

 domestic use, although its hardness is higher than that of the Hem- 

 lock lake water and it contains a small amount of sulphureted 

 hydrogen, but too small to be detected when the samples arrived 

 at the laboratory. 



Wells in low district south of Mount Hope reservoir. An exami- 

 nation of the shallow wells in the valley to the south of the Mount 

 Hope range of hills showed that the water was not only very 

 hard, but in many cases also tainted with sulphur. None of these 

 wells has ever overflowed, nor has their yielding capacity been 

 tested by pumping. From the geologic and topographic char- 

 acteristics of the valley there was no hope that the required 

 quantity of suitable water from a series of driven or bored wells 

 therein could be secured. 



As a matter of interest it may be mentioned that after the 

 eighteen sources had been thoroughly investigated, a private 

 company known as the Rochester Water Supply Company under- 

 took to furnish an additional supply of 2,000,000 gallons per day 

 from the wells situated in this low district south of the Mount Hope 

 reservoir. They put down a considerable number of driven wells, 

 but were unable to pump more than about 500,000 gallons per 

 day. Efforts were made to increase this quantity by boring more 

 wells and providing pumps of larger capacity, but without avail — 

 the subterranean supply was found to be limited to the amount 

 named. The prediction, therefore, in the original report that 

 there was no hope for a water supply from this point was abun- 

 dantly verified. 



Irondequoit creek. This source may be reached at its nearest 

 point to Mount Hope reservoir in a distance of five miles. The 



