We recently made some repairs to our well. The pump gave out and was
replaced and the 6.25" steel casing was sleeved with a 4" PVC pipe to
attempt to reduce the amount of sediment and iron in the water. We
were told by the health department that we would need to shock
chlorinate the well after the repairs to destroy any bacteria. Since
there were no bacteria present prior to the repairs, we didn't think
we needed to do this.
We just got our water test results back and, sure enough, there is
coliform bacteria present in the water now (although fortunately no E.
coli). We have been reading a lot about shock chlorination and the
instructions vary from site to site, with the chlorine to sit in the
system for anywhere from 12 to 48 hours. My first question is:
1) Is there any harm in leaving the chlorine in the system for 1 week
while we are on vacation and then flushing it when we return? Is 12
hours really long enough for this type of treatment?
The other question I have relates to water treatment systems. Based
on our recent water test, our water is as follows (values above
recommended limits are starred):
Iron: 0.26 mg/l (the PVC sleeving process cut this in half from a
prior reading of 0.47 mg/l)
Manganese: 0.26* mg/l
Sodium: 14 mg/l
Calcium: 74 mg/l
Chloride: 11 mg/l
Sulfate: 11 mg/l
Small amounts of lead, copper, zinc and toluene (far below the
The system I am thinking of using is the Puritec MC Series Complete
because I like the idea that it can soften water without the use of
salt and is pretty much maintenance free.
No contractors we have talked to have ever heard of these Puritec
systems and there is almost no data on how effective they are. My
other questions are:
2) Is the Puritec MC Series Complete a reputable brand?
3) Does anyone have any suggestions for treatment systems based on the
above water test results?