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Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911: Water Purification Plant, Washington, D. C. Results of Operation. — John Shaqi

Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911: Water Purification Plant, Washington, D. C. Results of Operation.American Society of Civil Engineers

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Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911: Water Purification Plant, Washington, D. C. Results of Operation.

Name: Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911: Water Purification Plant, Washington, D. C. Results of Operation.
Author: American Society of Civil Engineers

American Society of Civil Engineers

Civil engineering -- Periodicals; Water treatment plants

1905-06      |  3,300[2]|  4,300[3]|    750[4]|       850[2]|   33[2]
  1906-07      |  4,900   |  1,900   |  1,700   |       650   |   31
  1907-08      |  6,360   |  2,700   |  2,900   |     1,300   |   55
  1908-09      |  3,400   |  2,000   |    950   |       400   |   21
  1909-10      | 14,300   | 13,900   | 10,900   |     6,890   |  143
  =============+==========+==========+==========+=============+========

  [Footnote 1: Reservoirs out of service.]

  [Footnote 2: October to June 30th.]

  [Footnote 3: December to June 30th.]

  [Footnote 4: February to June 30th.]


     ~Table 5--Results of Tests for~ _Bacillus Coli_.
                  Percentage Positive.
  =============+==============+==============+===============
               | Great Falls, | Dalecarlia   |
               |or Dalecarlia |  Reservoir   | Georgetown
               |  Reservoir   |   Outlet.    | Reservoir.
     Month.    |    Inlet.    |              |
               +----+----+----+----+----+----+----+----+-----
               | 10 | 1  |0.1 | 10 | 1  |0.1 | 10 | 1  |0.1
               |c.c.|c.c.|c.c.|c.c.|c.c.|c.c.|c.c.|c.c.|c.c.
  -------------+----+----+----+----+----+----+----+----+-----
  1906.
  -------------+----+----+----+----+----+----+----+----+-----
  January[1]   |55.6|38.9|22.2|69.2|23.1| 7.7|56.0|40.0| 8.0
  February     |33.3|26.7| 6.7|26.1|17.4| 8.7|30.4|13.0| 4.4
  March        |50.0|12.5|   0|45.5|18.2|   0|20.8| 8.3|   0
  April        |72.2|33.3|16.7|95.5|50.0| 4.6|59.1|22.7| 4.6
  May          |20.0| 8.0| 4.0|20.0|12.0|   0| 7.8|   0|   0
  June         |57.7|38.5|19.2|40.0|32.0| 8.0|50.0|34.6|   0
  July         |65.0|50.0| 5.0|60.0|25.0|10.0|15.0| 5.0| 5.0
  August       |84.6|69.2|61.5|88.5|65.4|34.6|80.0|57.7|23.1
  September    |50.0|10.0|   0|30.0|10.0|10.0|40.0|10.0|   0
  October      |60.0|30.0|10.0|55.5|33.3|   0|80.0|60.0|20.0
  November     |37.5|   0|   0|25.0|12.5|12.5|37.5|25.0|   0
  December     |55.5|44.5|   0|66.7|44.5|22.2|66.7|22.2|   0
  -------------+----+----+----+----+----+----+----+----+-----
  1907.
  -------------+----+----+----+----+----+----+----+----+-----
  January      |77.8|33.3|22.2|66.7|33.3|   0|55.5|55.5|22.2
  February     |37.5|25.0|   0|12.5|   0|   0|37.5|12.5|   0
  March        |87.5|50.0|   0|75.0|37.5|   0|50.0|25.0|   0
  April        |44.5|11.1|11.1|66.7|22.2|11.1|77.8|11.1|11.1
  May          |91.3|65.2|17.4|88.9|33.3|   0|87.5|50.0|12.5
  June         |80.0|68.0|24.0|87.5|62.5|   0|66.7|44.5|11.1
  July         |42.3|30.8|19.2|25.0|12.5|   0|22.2|22.2|   0
  August       |48.1|29.6| 3.7|33.3|16.7|16.7|36.4|18.2|   0
  September    |62.5|54.1|25.0| ...| ...| ...|41.7|33.3|16.7
  October      |51.9|40.8| 7.4| ...| ...| ...|53.3|40.0| 6.7
  November     |80.0|64.0|24.0| ...| ...| ...|72.7|54.5|   0
  December     |56.0|48.0|16.0| ...| ...| ...|46.2|38.5| 7.7
  -------------+----+----+----+----+----+----+----+----+-----
  1908.
  -------------+----+----+----+----+----+----+----+----+-----

Public-domain text, read in full here on John Shaqi.

Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911: Water Purification Plant, Washington, D. C. Results of Operation.

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