Distilled water comes next in purity, and is, in fact, identical in character with rain-water; the latter being merely steam, condensed into rain in the great alembic of the sky. But both have the curious property of taking up and dissolving lead wherever they find it; and it is for this reason that lead pipes as leaders from or to cisterns should never be allowed, unless lined with some other metal.
The most refreshing as well as most wholesome water is river or spring water, perfectly filtered so that no possible impurity can remain. It is then soft and clear; has sufficient air and carbonic acid to make it refreshing, and enough earthy salts to prevent its taking up lead, and so becoming poisonous. River-water for daily use of course requires a system of pipes, and in small places is practically unavailable; so that wells are likely, in such case, to be the chief source of supply. Such water will of course be spring-water, with the characteristics of the soil through which it rises. If the well be shallow, and fed by surface springs, all impurities of the soil will be found in it; and thus to dig deep becomes essential, for many reasons. Dr. Parker of England, in some papers on practical hygiene, gives a clear and easily understood statement of some causes affecting the purity of well-water.
"A well drains an extent of ground around it, in the shape of an inverted cone, which is in proportion to its own depth and the looseness of the soil. In very loose soils a well of sixty or eighty feet will drain a large area, perhaps as much as two hundred feet in diameter, or even more; but the exact amount is not, as far as I know, precisely determined.
"Certain trades pour their refuse water into rivers, gas-works; slaughter-houses; tripe-houses; size, horn, and isinglass manufactories; wash-houses, starch-works, and calico-printers, and many others. In houses it is astonishing how many instances occur of the water of butts, cisterns, and tanks, getting contaminated by leaking of pipes and other causes, such as the passage of sewer-gas through overflow-pipes, &c.
"As there is now no doubt that typhoid-fever, cholera, and dysentery may be caused by water rendered impure by the evacuations passed in those diseases, and as simple diarrhoea seems also to be largely caused by animal organic [matter in] suspension or solution, it is evident how necessary it is to be quick-sighted in regard to the possible impurity of water from incidental causes of this kind. Therefore all tanks and cisterns should be inspected regularly, and any accidental source of impurity must be looked out for. Wells should be covered; a good coping put round to prevent substances being washed down; the distances from cess-pools and dung-heaps should be carefully noted; no sewer should be allowed to pass near a well. The same precautions should be taken with springs. In the case of rivers, we must consider if contamination can result from the discharge of fecal matters, trade refuse, &c."
Now, suppose all such precautions have been disregarded. Suppose, as is most usual, that the well is dug near the kitchen-door,—probably between kitchen and barn; the drain, if there is a drain from the kitchen, pouring out the dirty water of wash-day and all other days, which sinks through the ground, and acts as feeder to the waiting well. Suppose the manure-pile in the barnyard also sends down its supply, and the privies contribute theirs. The water may be unchanged in color or odor: yet none the less you are drinking a foul and horrible poison; slow in action, it is true, but making you ready for diphtheria and typhoid-fever, and consumption, and other nameless ills. It is so easy to doubt or set aside all this, that I give one case as illustration and warning of all the evils enumerated above.
The State Board of Health for Massachusetts has long busied itself with researches on all these points, and the case mentioned is in one of their reports. The house described is one in Hadley, built by a clergyman. "It was provided with an open well and sink-drain, with its deposit-box in close proximity thereto, affording facility to discharge its gases in the well as the most convenient place. The cellar was used, as country cellars commonly are, for the storage of provisions of every kind, and the windows were never opened. The only escape for the soil-moisture and ground-air, except that which was absorbed by the drinking-water, was through the crevices of the floors into the rooms above. After a few months' residence in the house, the clergyman's wife died of fever. He soon married again; and the second wife also died of fever, within a year from the time of marriage. His children were sick. He occupied the house about two years. The wife of his successor was soon taken ill, and barely escaped with her life. A physician then took the house. He married, and his wife soon after died of fever. Another physician took the house, and within a few months came near dying of erysipelas. He deserved it. The house, meanwhile, received no treatment; the doctors, according to their usual wont, even in their own families, were satisfied to deal with the consequences, and leave the causes to do their worst.
"Next after the doctors, a school-teacher took the house, and made a few changes, for convenience apparently, for substantially it remained the same; for he, too, escaped as by the skin of his teeth. Finally, after the foreclosure of many lives, the sickness and fatality of the property became so marked, that it became unsalable. When at last sold, every sort of prediction was made as to the risk of occupancy; but, by a thorough attention to sanitary conditions, no such risks have been encountered."
These deaths were suicides,—ignorant ones, it is true, not one stopping to think what causes lay at the bottom of such "mysterious dispensations." But, just as surely as corn gives a crop from the seed sown, so surely typhoid fever and diphtheria follow bad drainage or the drinking of impure water.
Boiling such water destroys the germs of disease; but neither boiled water nor boiled germs are pleasant drinking.