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Smell

Does your water smell like Rotten Eggs?
  1. Manganese greensand filter up to 6 ppm H2S with pH not lower than 6.7
  2. Over 6 ppm H2S constant chlorination by filtration / dechlorination
  3. Open aeration followed by oxidizing-catalyst filter

The Water should be tested at the source for H2S determination as the gas escapes rapidly

Does your water smell like Petroleum?

Locate and eliminate seepage. Activated carbon will also adsorb oil and gasoline (most hydrocarbons) on a short term basis. Air-strip with (40:1 air/water ratio) followed by 2 ft 3 carbon units in series

Does your water smell aromatic, fishy, earthy or woody?
  1. Activated carbon type filter, or
  2. Cartridge-activated carbon filter for drinking and cooking
Does your water have a sharp metalic smell?
  1. Water softener can remove 0.5 ppm or iron (Fe) for every grain/gal. of hardness up to 10 ppm at minimum pH of 6.7 (unaerated water)
  2. Over 10 ppm Fe: chlorination with sufficient retention tank time for full oxidation followed by filtration and dechlorination
  3. pressure aeration plus filtration for up to 20 ppm Fe

Appearance

Does your water have rusty appearance?
  1. up to 10 ppm iron removed by manganese greensand filter if pH is 6.7 or higher; or
  2. Manganese-treated pumicite catalyst filter if pH is 6.8 or higher and oxygen is 15% of total iron content
  3. Downflow water softened with good backwash, up to 10 ppm, use calcite filter followed be downflow water softener
Do your sinks or tubs or toliets have black stains?
  1. Manganese greensand or manganese zeolite-type catalyst-filter to limit of 6 ppm or 15 ppm, respectively (combined Fe and Mn), with pH not lower than 6.7 value
  2. Process used for iron removal usually will handle manganese
  3. Manganese punicite* medium catalyst-filter with ultra-filtration-type membrane element
  4. For whole-house system, remove by absorption via special macroporous Type 1 anion exchange resin regenerated with NaC1. up to 3 ppm
  5. Above 3 ppm, constant chlorination with full retention time, followed by filtration and/or dechlorination
Does your water contain a gelatinous slime?
  1. Destroy iron bacteria with a solution of hydrochloric acid, then constant chlorination, followed by activated carbon filtration or calcite filter.
  2. Potassium permanganate chemical feed followed by MnZ/anthracite filter
Does your water have a hydrocarbon sheen?

(Same as Petroleum) Locate and eliminate seepage. Activated carbon will also adsorb oil and gasoline (most hydrocarbons) on a short term basis. Air-strip with (40:1 air/water ratio) followed by 2 ft 3 carbon units in series

Is your water murky?
  1. For mud, clay, and sediment – use a calcite or pumicite filter, up to 50 ppm
  2. For sand, grit, or clay – use a hydrocyclone, sand trap, and/or install new well screen

Taste

Does your water have a salty taste?
  1. There is no commercial residential treatment for sodium over 1,800 ppm
  2. Deionize drinking water only with disposable mixed bed-anion/cation resin; or
  3. Reverse osmosis for drinking and cooking water only; or
  4. Home distillation system for drinking water.
Does your water taste like medicine?

Single faucet activated carbon filter or whole-house tank-type activated absorption filter

Does your water have a chemical taste?

Activated carbon filter will absorb limited amount. Must continue to monitor the product water closely

Please note: the words ABSORB and ADSORB are both used above. ABSORB is the proccess of one substance actualy penetrating into the structure of another substance. ADSORB is the physical process occuring when liquids, gases, or suspended matter adhere to the surfaces of, or in the pores of, an absorbent medium. Adsorption is the physical procces which occurs without chemical reaction.
Source: http://www.cwqa.com/faq.php?section=cwqa&subsec=faq&question=3D