140 
TYPHOID FEVEE IH DISTEICT OF COLUMBIA. 
Sewer. — Depth, 11 feet; distance from well, 25 feet (?). 
Privies. — Eight in block; 20 within one and one-half blocks. 
Bacteriologically . — Indicates sewage pollution. 
Chemically. — Polluted. 
The following four cases of typhoid fever drank the water of this well; 
Case 
No. 
Onset of 
disease. 
During the 30 days preceding onset of disease used the well water — 
Probable source of 
infection. 
171 
226 
May 18 
June 21 
Habitually 
Occasionally 
?. 
0 
446 
Aug. 2 
Sept. 12 
Frequently 
? 
754 
Occasionally 
? 
SHALLOW WELLS — SOUTHEAST SECTION. 
No. 30. 
Location. — Fourth street and South Carolina avenue SE. (southwest corner). 
Kind . — 
Condition. — Old; cracked; bricks loose at base; pipe drain to sewer. 
Depth. — Below surface, 21 feet; water, 3 feet. 
Sewer. — Depth, 10 J feet; distance from well, 50 feet. 
Privies. — Two in block. 
Bacteriologically. — Indicates sewage pollution; variable. 
Chemically. — Polluted. 
No. 32. 
Location. — Fifth and G streets SE. (northeast corner). 
Kind. — Wood. 
Condition. — Rotten at base; bricks loose at base; pipe drain to sewer. 
Depth. — Below surface, 14 feet; water, 2 feet. 
Sewer. — Depth, 8 feet; distance from well, 10 feet. 
Privies. — None in block; 3 within one block radius. 
Bacteriologically. — Indicates sewage pollution; variable. 
Chemically. — Remote pollution. 
The following 4 cases of typhoid fever drank the water of this well: 
Case 
No. 
Onset of 
disease. 
During the 30 days preceding onset of disease used the well water— 
Probable source of 
infection. 
169 
July 6 
July 14 
Aug. 1 
Aug. 25 
Frequently . ; 
? 
290 
Occasionally.... .. 
? 
450 
do - . 
? 
723 
do 
9 
No. 34. 
Location. — Fourth street and North Carolina avenue, Seward square, SE. (southeast 
corner) . 
Kind. — Wood. 
Condition. — Fair. 
Depth. — Below surface, 20 feet; water, 3 feet. 
Neiyer.— Depth, 6 feet; distance from well, 10 feet. 
Privies. — None within two blocks. 
Bacteriologically. — Good. 
Chemically. — Remote pollution. 
