Sewage Disposal: 1940-1990


                                1 9 9 0
 
           Public sewer     Septic tank or       Other means
                               cesspool
 
          Number   Per-      Number   Per-     Number   Per-
                   cent               cent              cent
 
US    76,455,211   74.8% 24,670,877   24.1% 1,137,590    1.1%
 
AZ     1,348,836   81.3%    282,897   17.0%    27,697    1.7%
CO     1,283,186   86.9%    183,817   12.4%    10,346    0.7%
ID       264,618   64.0%    142,879   34.6%     5,830    1.4%
MT       218,372   60.5%    135,371   37.5%     7,412    2.1%
NV       456,107   87.9%     60,508   11.7%     2,243    0.4%
NM       452,934   71.7%    161,068   25.5%    18,056    2.9%
UT       528,864   88.4%     65,403   10.9%     4,121    0.7%
WY       151,004   74.2%     49,055   24.1%     3,352    1.6%
 

  1 9 8 0   Public sewer Septic tank or Other means cesspool   Number Per- Number Per- Number Per- cent cent cent   US 64,240,532 74.0% 20,926,961 24.1% 1,591,224 1.8%   AZ 869,862 81.2% 180,665 16.9% 21,260 2.0% CO 1,019,477 87.2% 138,742 11.9% 11,355 1.0% ID 229,481 63.7% 124,832 34.7% 5,718 1.6% MT 201,014 63.8% 107,018 34.0% 7,066 2.2% NV 294,758 87.3% 41,241 12.2% 1,650 0.5% NM 361,847 73.3% 111,967 22.7% 19,675 4.0% UT 421,923 87.7% 56,700 11.8% 2,443 0.5% WY 142,456 78.1% 37,656 20.7% 2,235 1.2%     
1 9 7 0   Public sewer Septic tank or Other means cesspool   Number Per- Number Per- Number Per- cent cent cent   US 48,187,675 71.2% 16,601,792 24.5% 2,904,375 4.3%   AZ 446,304 77.1% 114,433 19.8% 18,013 3.1% CO 612,659 82.5% 113,290 15.3% 16,689 2.2% ID 137,891 57.9% 93,146 39.1% 7,266 3.0% MT 154,581 64.2% 74,198 30.8% 11,974 5.0% NV 147,743 86.1% 21,988 12.8% 1,951 1.1% NM 230,737 71.6% 65,781 20.4% 25,722 8.0% UT 258,649 82.9% 49,249 15.8% 3,976 1.3% WY 86,983 75.9% 23,349 20.4% 4,217 3.7%    
    UNITS LACKING A FLUSH TOILET: 1960   All housing No flush toilet units Number Per- cent   US 58,318,297 5,978,261 10.3%   AZ 415,790 35,541 8.5% CO 594,448 49,124 8.3% ID 223,533 23,727 10.6% MT 233,277 32,732 14.0% NV 101,558 5,116 5.0% NM 281,894 48,837 17.3% UT 262,623 9,659 3.7% WY 113,084 12,809 11.3%    
  UNITS LACKING A FLUSH TOILET: 1950   Units reporting No flush toilet toilet facilities Number Per- cent   US 45,261,040 11,086,857 24.5%   AZ 236,143 67,029 28.4% CO 429,666 117,945 27.5% ID 185,712 59,392 32.0% MT 190,990 66,339 34.7% NV 54,683 10,932 20.0% NM 193,601 84,574 43.7% UT 198,098 28,038 14.2% WY 90,610 28,915 31.9%    
  UNITS LACKING A FLUSH TOILET: 1940   Units reporting No flush toilet toilet facilities Number Per- cent   US 36,769,610 12,975,770 35.3%   AZ 144,471 69,023 47.8% CO 348,133 144,699 41.6% ID 149,771 81,983 54.7% MT 174,838 92,459 52.9% NV 35,912 13,956 38.9% NM 142,483 97,683 68.6% UT 146,097 46,087 31.5% WY 75,555 39,068 51.7%  


Notes: 1980 data are presented for year-round housing units; vacant seasonal and migratory were excluded.

1970 data are presented for year-round housing units; vacant seasonal and migratory were excluded.

Alaska and Hawaii are not included in 1950 U.S. total

Source: Housing Then and Now U.S. Census Bureau.

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