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Private Homeowner Drinking Water Issues. Presenter Mr. Brian Oram, Professional Geologist Wilkes University GeoEnvironmental Sciences and Engineering Department Center for Environmental Quality Wilkes Barre, PA 18766 http://www.water-research.net (570) 408-4619. Water Treatment.

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private homeowner drinking water issues
Private Homeowner Drinking Water Issues

Presenter

Mr. Brian Oram, Professional Geologist

Wilkes UniversityGeoEnvironmental Sciences and Engineering DepartmentCenter for Environmental Quality

Wilkes Barre, PA 18766

http://www.water-research.net

(570) 408-4619

water treatment
Water Treatment

anion exchange

disinfection

oxidation

pH adjustment

cation exchange

filtration

adsorption

demineralization

Match the pollutant with the correct process!

do we need to treat the water
Do We Need to Treat the Water ?
  • Evaluate Existing Source- Construction, Location, and Water Quality
  • Is Maintenance Needed ?
  • Identify and Repair System Deficiencies
  • Pollution Control Measures- well cap, control drainage, and change land-us practice
  • Treatment- POU, POE, or other

The Last Control Measure is Treatment

slide5

DisinfectionShock Chlorination

May work for small numbers of coliform bacteria.

Should be conducted after all well repairs, flooding,or problems with elevated bacterial counts. After shockdisinfection – retesting for total coliform, standard plate count, and nuisance bacteria may be need.

iron nuisance bacteria
Iron / Nuisance Bacteria
  • Periodic shock well disinfections
  • Drop tablets chlorinators
  • Chlorine feed system
  • Ozone treatment
  • UV treatment – may be possibleprobably Class A Unit (turbidity, hardness, iron, manganese issues)
whole house treatment

Whole House Treatment

Point of Entry (POE)

slide8

Issues:

  • Chlorine Demand
  • Bacterial Levels
  • Other Water Quality problems like: iron, sulfur, and odors
  • Alkalinity and pH of water may need adjustment

continuous

chlorination

slide9

U-V Sterilizer

  • The Selection of UV
  • Unit system depends on the
  • following:
  • General Water Quality
  • Turbidity
  • Hardness
  • Iron and Manganese
  • Bacterial Levels
  • Source Water Type and Overall
  • Water Quality ?

U-V Tube

Http://www.nsf.org

schematic of softener

Water SoftenerDo Not Remove All the Water Hardness !

Schematic of Softener

Ion Exchange: Sodium for Calcium & Magnesium

Raw Water

Calcium &

Magnesium

And other

Multivalent

cations

RESIN

(Sodium

Or

Potassium)

Treated Water

(Sodium or Potassium)

slide12

Recharge with Brine

Calcium & Magnesium and other multivalent cations

Waste

Water

RESIN

(Calcium

&

Magnesium)

Brine

(Sodium or Potassium)

carbon filtration
Carbon Filtration
  • Uses
    • Remove man-made organic chemicals
    • Remove miscellaneous tastes and odor from water – assuming no bacterial problems
    • Remove radon gas from water
  • Maintenance
    • Carbon must be replaced

routinely

slide14

Acid (Corrosive Water) Control

Water

Limestone chips

or calcite

Gravel

iron removal
Iron Removal
  • Form and concentration is important
    • Oxidized = visible, orange stain
    • Reduced = colorless
  • Removal Methods
    • Water Softenerno bacterial problem
    • Chlorination / Filtration
    • Oxidizing Filterno bacterial problem
    • Ozone
hydrogen sulfide
Hydrogen Sulfide
  • Hot water only?
    • Adjust water heater to a temperature of 160F for 12 to 24 hours and then flush
    • remove or replace rod in heater (Warranty Issues)
  • Carbon Filtration- no bacterial problem
  • Chlorination/ Contact Tank / Filtration
  • Aeration- no bacterial problem
  • Oxidizing filter- manganese greensandno bacterial problem
at the sink

At the Sink

Point of Use (POU)

reverse osmosis
Reverse Osmosis
  • force water through membrane
  • removes many contaminants
distillation

Steam

Cooling Water

Raw

Water

Treated

Water

Heat Source

Distillation
  • heat water to boiling
  • condense vapor
  • ions left behind
  • energy intensive
slide21

Units are rated for Water that meets Drinking Water StandardsNot for Water with Levels above the Drinking Water Standard

Typically these are small carbon-block filters that will remove particles, reduce odors and taste problems, and have a limited exchange capacity for hardness and trace metals.

before you buy treatment equipment get the facts not the sales pitch
Before You Buy Treatment EquipmentGet the Facts- Not the Sales Pitch
  • Have your water tested by a reputable accredited, approved, and/or certified lab
    • Don’t rely on in-home water test results.
    • Don’t rely on free water tests.
  • Consult unbiased water quality experts and get multiple quotes for a system.
  • Explore All Alternatives
    • Well Rehabilitation, New source, Local Pollution Control, Maintenance
tips for buying treatment equipment
Tips for Buying Treatment Equipment
  • Seek reputable companies that have been around
  • Ask for customer references
  • Research company history
  • Beware of hard sale techniques (scare tactics)
  • Ask about maintenance requirements
  • Get a detailed warranty
  • Look for NSF and WQA certifications
  • EPA certification means nothing
  • Get everything in writing!
  • If it sounds too good - it is!
slide24

Sample No. 1

gpg = grains per gallon (1 gpg = 17.1 mg/L), ** = Recommended standard (RMCL)

Recommendation ?

Shock chlorination and retesting, possible continuous disinfection

slide25

Sample No. 2

gpg = grains per gallon (1 gpg = 17.1 mg/L),** = Recommended standard (RMCL)

Recommendation ?

Short-Term: Shock Treatment and Retesting

Long-Term: Possibly Chlorination or UV light or Ozone

slide26

Sample No. 3

gpg = grains per gallon (1 gpg = 17.1 mg/L),** = Recommended standard (RMCL)

Recommendation ?

Oxidizing filter or Ozone

slide27

Sample No. 4

gpg = grains per gallon (1 gpg = 17.1 mg/L),** = Recommended standard (RMCL)

Recommendation ?

Water softener

slide28

Sample No. 5

gpg = grains per gallon (1 gpg = 17.1 mg/L),** = Recommended standard (RMCL)

Recommendation ?

Acid Neutralizing Filter or Caustic Feed for pH adjustment

slide29

Sample No. 6

gpg = grains per gallon (1 gpg = 17.1 mg/L), ** = Recommended standard (RMCL)

Recommendation ?

POU system or anion exchange

private homeowner drinking water issues1
Private Homeowner Drinking Water Issues

Presenter

Mr. Brian Oram, Professional Geologist

Wilkes UniversityGeoEnvironmental Sciences and EnvironmentalEngineering DepartmentCenter for Environmental Quality

Wilkes Barre, PA 18766

http://www.water-research.net

(570) 408-4619