Tuesday, June 23, 2015

Coliform, E coli and Hardness

We have coliform and e coli, water is very hard, 3 properties attached to well.
-Mr. Stone

Hardness is easy to handle- we would recommend an efficient salt-based water softener.  High total dissolved solids are handled by reverse osmosis treatment, which is easy to handle for just drinking water, but relatively elaborate (expensive) for whole-house treatment.  Finally, the bacteria issue is usually only of concern if you’re looking to drink the water.  If not, you might not need to do anything.  If you do wish to drink the water, the water should ideally be chlorinated and given a lot of contact time, but there are a few other ways to approach it as well.

To thoroughly treat this water, we can recommend using a Precision-24 chlorine injection metering pump, which provides extra strength oxidation for killing bacteria and oxidizing high levels of iron and manganese (which can be linked with sulfur odors).   Following the point of injection, the chlorine would then feed into a 120-gallon contact tank to provide enough contact time for the solution to react with the iron, manganese and especially the coliform or e coli bacteria in the water.  Much of the iron and manganese will precipitate out and settle to the bottom of the tank at this point.

Following the large contact tank, the water should pass through a backwashing carbon iron filter, which will collect all of the iron and manganese and flush it out automatically to drain.  Finally, you could use an efficient salt-based water softener to eliminate any hardness present in the water.

Precision-24 Chlorinator Package with Solution Tank

Precision-24 Chlorinator Package with Solution Tank:     

Can be either 110 volt or 220 volt plug; can be hardwired to a pressure switch to come on with a well pump.  Works with well water flow rates from 1 – 50 Gallons per Minute (GPM)

Output rating:  0.1 – 24 Gallons per Day (GPD).  Pressure rating:  Will inject into lines with up to 110 PSI. 

Click here for more product information.

Additional features:  Degassing Valve is built in which makes this great for chlorination use.  System includes Chlorination Pump, 10 Gallon Solution Tank, Injection Check Valve, tubing and installation fittings.  25 & 35 Gallon tanks also available for additional cost.

120 Gallon Contact Tank120 Gallon Contact Tank 
The CT-120 tank is a durable easy-to-install retention tank designed to provide optimum contact time during chemical treatment. These lightweight seamless totally non-corrosive retention tanks are ideal for new and replacement installation where durability is at a premium. 100% non-metallic polymer materials. Impervious to chemical attack.  Comes with  1-1/4 inch inlet.

Click here for more product information.

Vacuum BreakerVacuum Breaker, ½” mpt.   

Vacuum breaker relief valve Watts 1/2" male 200 PSI maximum.
Required for contact and retention tanks to prevent vacuum in system and avoid imploding vessel.

For more product information, please click here.

Carbon Filter 5700e 1.5 CFCarbon Filter 5700-E 1.5 CF 
Includes 1.5 cubic feet of carbon filter media; and Digital 5700-E control valve.

All the filter media you need for the system is included. Excellent for use in de-chlorinating water, taking out hydrogen peroxide and removing many tastes and odors.
Much longer life and higher flow rates than carbon filter cartridges.

More product information here.

Softener 5900e 48KSoftener 5900 Series, 48K Size       

Includes 1 inch or 3/4 inch pipe connectors; by-pass valve; 1.5 cubic feet of high-grade softener resin; heavy-duty brine tank with salt-grid; and 165 Series NSF Certified digital metered-regeneration control valve.

Specifications and Features: High-grade softening resin for maximum performance. Filter tank is NSF certified: one piece seamless polyester construction for long life. Max pressure recommended is 100 psi.

For more information, please click here.

For a reverse osmosis drinking water system, I recommend this USA High-flow model here:

USA High-Flow 5-Stage 60 GPD RO System

USA High-Flow 5-Stage 60 GPD RO SystemComes complete with easy-to-follow installation instructions.

  • 60 Gallons Per Day (GPD) Thin Film Composite Membrane
  • NSF Certified Quick-Connect Fittings
  • NSF Certified Metal Bladder Tank
  • NSF Certified 10 Micron Carbon Block
    More product info here.

Please let me know if you have any questions or concerns and I will be happy to help you.  The items listed above are intended as general recommendations- would you like to discuss the issue over the phone so we can see if you would benefit from a custom-designed system?  We are valuable Monday through Friday, 8 to 5 Pacific Time, and I would be glad to help you.