Saturday, May 16, 2009

Stamford Well Water - discussion on minerals and Salt

In the mineral post at first glance it might seem hardness is an issue, however if you look at what the US EPA's guidance on hardness is the problem resolves into a slight problem with about 16% of the wells having significant hardness in the water. When you look at the type of hardness, calcium hardness is much more benign than magnesium hardness, the wells with difficult water drops to less than 5%. So what is the issue here. Hard water (or water that is presented as being hard) sells softeners, which a lucrative business. The true issue, acidic water, is not as lucrative and not addressed unless a softener can be sold as well.


This next presentation is of Salts in well water, the major source of which is softener backwash. Most backwash is pumped into septic systems, which will destroy the cement of the septic and is against public health code for a very good reason. The water pumped into the septic system goes back into the water a well draws from.

Test Average value High Okay % Okay
SALTS in mg/L
above 250 100 to 250
chlorides 105.69 441 1337 3632 67.13%
chlorides with softener 138.84 147 358 583 53.58%
chlorides without softener 69.04 0 923 2789 75.13%
above 100 28 to 100
sodium 49.84 547 1481 2417 54.38%
sodium treated 85.74 263 371 217 25.50%
sodium untreated 51.14 577 1423 2209 52.48%
more than 2500 500 to 2500 Above Average
potassium 25.27 0 2 281 371 56.73%
potassium treated 95.47 0 2 109 23 17.16%
potassium not treated 4.75 0 0 23 71 75.53%

The wells with problem salts that do not have softeners are linked to their neighbors softener backwash except in only 4 cases where the wells have road salt drain over them.
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