Saturday, May 16, 2009

Stamford Well Water - the stats

Compiled from 1977 by the number of tests

BACTERIA in colonies/ 100 mL








above 30 not potable 1 colony Okay
% Okay
total coliform 6.38 140 724 113 5671 85.30%


above 30 E coli present No E Coli

Escherichia coli 5.85 7 115 477


tested not present Present



cp-Crenothrix polyspora, Iron bacteria 0 4



gf-Gallionella ferruginea, Iron bacteria 8 115



sn-Sphaerotilus natans, Iron bacteria 0 23



st-Siderocapsa treubii, Iron bacteria 0 12



tmu-Thiodendron mucosum, Sulfur bacteria 0 1



tto-Thiobacillus thiooxid, Sulfur bacteria 0 3





158



NUTRIENTS in mg/L








above 1 0.1 to 1 0.01 to 0.1

nitrite nitrogen 0.02 6 1 276 1995 87.58%


above 15 10 to 15 5 to 10

nitrate nitrogen 2.32 13 0 251 2776 91.32%







First set is of bacteria and nutrients. Basically over 30 years 15% of the wells have a problem, That really is not bad.
The nutrients show both the influx of fertilizer (almost non-existent) and microbial activity (also not really an issue).
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