Timeframe. The United States Postal Services reports that as of January 2011, it takes an average of one to three days for First-Class Mail to arrive at its destination. Priority Mail takes an average of one to two days to arrive, according to the USPS.USPS only includes the time a package stays in transit in their estimations.Packages dropped off at a post office during business hours usually leave that day. Packages dropped off after hours may take an additional day.he United States Postal Services reports that as of January 2011, it takes an average of one to three days for First-Class Mail to arrive at its destination.
Short-term: Excessive levels of nitrate in drinking water have caused serious illness and sometimes death. The serious illness in infants (aka Blue Baby Syndrome) is due to the conversion of nitrate to nitrite by the body, which can interfere with the oxygen-carrying capacity of the childs blood.
1 If any amount of E. coli bacteria is found in a water sample, it is an indication that human sewage or animal faeces has contaminated the water supply.  Nitrates - The presence of nitrates in well water is usually the result of farming activities like fertilizing, or seepage from septic systems. If nitrates are at levels above 10 milligrams per litre of water, an infant may suffer from a condition known as âblue baby syndromeâ or methaemoglobinaemia. Blue baby syndrome is caused by the nitrates interfering with the bloodâs ability to carry oxygen throughout the body.