300 EXPERIMENT STATION. [Jau. '93. 



is contaminated with sewage, decaying animal matter, urine, 

 etc., and should be condemned. 



4. Eight hundredth parts per million of free ammonia 

 and one tenth part per million of all)uminoid ammonia 

 render a water very suspicious, even without much chlorine. 



5. Albuminoid ammonia, over .15 parts per million, 

 ought to absolutely condemn a water which contains it. 



6. The total solids found in the water should not exceed 

 forty grains per gallon (571.4 parts per million). 



An examination of the previously stated analyses indicates 

 that Nos. 2, 3, 4, 9, 10, 13, 18, 19, 20, 22, 24, 25, 27, 2S, 

 29, 30, 35, 46, 58, 59, 60, 61, 64, 79, 81, 83, 84, 89, 92, 

 93, 96, 98, 99, 100, 103, 106, 107 and 108 ought to be 

 condemned as unlit for fimiily use; while Nos. 7, 8, 14, 15, 

 21, 23, 33, 36, 37, 42, 48, 53, 54, 62, 63, 82 and 109 must 

 be considered suspicious. From this record it will be seen 

 that over one-third of the entire number of well waters tried 

 proved unfit for drinking. Heating waters to the boiling 

 point not unfrequently removes immediate danger. 



Parties sending on water for analysis should be very 

 careful to use clean vessels, clean stoppers, etc. The 

 samples should be sent on without delay after collecting. 

 One gallon is desirable for the analysis. 



