The Maximum Contaminant Level Goal establishes the level at which no known or anticipated adverse effects on the health of persons occur and which allows an adequate margin of safety.

This measurement is expressed in milligrams per liter (mg/L) unless otherwise specified.

The Maximum Contaminant Level establishes as close to the MCLG as is feasible, taking into consideration costs and treatment techniques applicable at public water systems.

This measurement is expressed in mg/L unless otherwise specified.

The Secondary Maximum Contaminant Level specifies the maximum contaminant level that—in the judgment of the administrator—are requisite to protect the public welfare.

This measurement is expressed in mg/L unless otherwise specified.

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Diagnose your water

Follow the steps below to get an idea of what’s wrong with your water

Get a scientifically determined diagnosis of your well water by Atlantic Filter.

If your city water isn’t fresh and tasty, has a bad odor, isn’t sparkling clear or perhaps plagued by a specific contaminate, click on one of the problems below for incite on the possible culprits as well as solutions recommended by Atlantic Filter Corporation. Before getting started, however, following are a few definitions to help you better understand the maximum acceptable levels of particular substances in drinking water.

MCLG: The Maximum Contaminant Level Goal establishes the level at which no known or anticipated adverse effects on the health of persons occur and which allows an adequate margin of safety. This measurement is expressed in milligrams per liter (mg/L) unless otherwise specified.

MCL: The Maximum Contaminant Level establishes as close to the MCLG as is feasible, taking into consideration costs and treatment techniques applicable at public water systems. This measurement is expressed in mg/L unless otherwise specified.

SMCL: The Secondary Maximum Contaminant Level specifies the maximum contaminant level that—in the judgment of the administrator—are requisite to protect the public welfare. This measurement is expressed in mg/L unless otherwise specified.

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Chlorine

MCLG:

• 4 mg/L (P)*

MCL:

• 4 mg/L (P)*

(P)*: Proposed EPA Standard Change

HEALTH EFFECTS FROM INGESTION OF WATER:

• Possible Cancer

CONTAMINANT SOURCES IN DRINKING WATER:

• Chemical Added to Disinfect Municipal Water Supply

RECOMMENDED TREATMENT:

• Activated Carbon

• Reverse Osmosis

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Bacteria

MAIN MICROBIOLOGICAL GROUPS:

• Bacteria

• Viruses

• Protozoa

• Cysts

HEALTH EFFECTS:

• Sickness

• Possible Death

CONTAMINANT SOURCES:

• Failing Septic System

• Farmland Runoff

RECOMMENDED TREATMENT:

• Chemical feed

• UV/Ozone

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Volatile Organic Compounds

KNOWN AS: VOCs

In total there are over 80 VOC's regulated under the USEPA Safe Water Drinking Act (SDWA).

POTENTIAL HEALTH EFFECTS FROM INGESTION

• Cancer

• Skin Mutations (Teratogens)

• Growth Mutations (Mutagens)

SOURCES OF CONTAMINANT IN DRINKING WATER

• Many chemicals used in industry that have found there way into the drinking water.

RECOMMENDED TREATMENT

• Carbon Filter

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Odor

SMCL:

• 3 (Threshold Odor Number)

EFFECTS ON WATER:

• Rotten Eggs

• Musty

• Garlic

• Chemical Smell

CONTAMINANT SOURCES IN DRINKING WATER:

• Chlorine

• Hydrogen Sulfide

• Organic Matter

• Gasoline Contamination

• Methane Gas

• Septic Contamination

RECOMMENDED TREATMENT:

• Activated Carbon

• Oxidation/Filtration

• Disinfection/Filtration

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SEDIMENT

EFFECTS ON WATER:

• Cloudy, dirty or unclear water

CONTAMINANT SOURCES:

• Fine Clay Particles

• Sand

• Other suspended particles

• Sewage contamination

RECOMMENDED TREATMENT:

• Sediment filter

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Taste
Mclg SEDIMENT

4 mg/L (P)*

MCL

4 mg/L (P)*

* Proposed EPA standard change

EFFECTS

Possible cancer

SOURCES

Added to disinfect municipal water

TREATMENT

Activated carbon

Reverse osmosis

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Color

SMCL:

• 15 (Color Units)

EFFECTS ON WATER:

• Visible Tint

SOURCES OF CONTAMINANT IN DRINKING WATER:

• Tannins

• Natural Deposits

• Iron

• Copper

• Manganese

RECOMMENDED TREATMENT:

• An-Ion Exchange Water Softener

• Activated Carbon

• Filtration

• Chlorination

• Reverse Osmosis

• Distillation

• Ozone

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Scale/hardness

SMCL (No Federal Limit):

• Soft: <17.1

• Slightly Hard: 17.1 to 60

• Moderately Hard: 60 to 120

• Hard: 120 to 180

• Very Hard: 180 and Above

EFFECTS ON WATER:

• Consumes soap and makes cleaning more difficult

• Soap curd and lime scum residue

• Whitish scaled deposits

SOURCES OF CONTAMINANT IN DRINKING WATER:

• Natural Deposits

RECOMMENDED TREATMENT:

• Ion Exchange Water Softener

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Radiologicals

EPA has established drinking water standards for several types of radioactive contaminants.

COMBINED RADIUM 226/228 (5pCi/L)

• Beta Emitters (4 mrems)

• Gross Alpha Standard (15pCi/L)

• Uranium (30 µg/l)

POTENTIAL HEALTH EFFECTS FROM WATER INGESTION

• Increased risk of disease development

• Increased risk of cancer

RECOMMENDED TREATMENT

• Ion Exchange

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Trihalomethanes

KNOWN AS: THMs

MCLG:

• Zero

MCL:

• 0.080 (Stage 1) (0.040 P*)

HEALTH EFFECTS FROM WATER INGESTION

• Cancer

SOURCES OF CONTAMINANT IN WATER

• Drinking water chlorination by-products

RECOMMENDED TREATMENTS

• Activated Carbon

• Ultrafiltration (20% - 90%)

• Reverse Osmosis (20% - 90%)

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Lead

MCLG:

• Zero

MCL:

• 0.015 mg/L (action level)

HEALTH EFFECTS FROM WATER INGESTION

• Kidney Damage

• Nervous System Damage

• Impedes Mental and Physical Development

SOURCES OF CONTAMINANT IN WATER

• Natural/Industrial Deposits

• Plumbing

• Solder

• Brass Alloy Faucets

RECOMMENDED TREATMENTS

• Cation Exchange (20% - 90%)

• Coagulation/Filtration

• Reverse Osmosis

• Distillation

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Ph

SMCL:

• 6.5 - 8.5

EFFECTS ON WATER:

• Corrosive Water

CONTAMINANT SOURCES IN DRINKING WATER:

• High Carbon Dioxide

• Natural Balance of Acid and Alkalinity

RECOMMENDED TREATMENT:

• Increase: pH Booster Filter

• Decrease: Reverse Osmosis

• Neutralize: Calcite Filter

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Hydrogen Sulfide

KNOWN AS:

• Sulphur Odor (Rotten Eggs)

DRINKING WATER STANDARDS:

• Not Regulated

SOURCES OF CONTAMINANT:

• Sulfate-reducing bacteria

POTENTIAL HEALTH EFFECTS:

• Overall poor taste/odor - indirectly may contribute to dehydration due to low consumption of water.

RECOMMENDED TREATMENT:

• Oxidation

- Ozonation

- Hydrogen Peroxided

- Potassium Permanganate

- Manganese Greensand

- Manganese Dioxide

• Adsorption

- Granular Activated Carbon (GAC)

- Solid Carbon Block Filters

- Fine Mesh Carbon Filters

• Aeration

• Reverse Osmosis

• Distillation

• Strong Acid Cation Exchange

• Acid/Base Neutralization

• Corrosion Control

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Methyl Tertiary-Butyl Ether

SMCL: No Federal Limit

EFFECTS ON WATER:

• Sweet Solvent Odor at 0.020 mg/L

• Possible Human Carcinogen

SOURCES OF CONTAMINANT:

• Oxygenator additive for reformulated gasoline

RECOMMENDED TREATMENTS:

• Activated Carbon

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Xylenes

MCLG (mg/L): 10

MCL (mg/L): 10

HEALTH EFFECTS FROM INGESTION OF WATER:

• Liver, Kidney, Nervous System Effects

SOURCES OF CONTAMINANT IN WATER:

• By-product of gasoline refining, paints, inks, detergents, etc.

RECOMMENDED TREATMENT:

• Activated Carbon

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Alkalinity

SMCL: No Federal Limit

• Low: <30 mg/L

• High: >300 mg/L

EFFECTS ON WATER:

• Low alkalinity waters tend to dissolve minerals and metals

• High alkalinity waters tend to precipitate minerals and metals

SOURCES OF CONTAMINANT IN WATER:

• Presence of bicarbonates, carbonates, and hydroxides

RECOMMENDED TREATMENT:

• Coagulation/Filtration

• Submicron Filtration

• Reverse Osmosis

• Ultrafiltration

• Distillation

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Sulfate

SMCL: 250mgL

SOURCES OF CONTAMINANT IN WATER:

• Natural Deposits

POTENTIAL HEALTH EFFECTS FROM INGESTION:

• Medicinal Taste

• Laxative Effect

RECOMMENDED TREATMENTS:

• Reverse Osmosis

• Distillation

• Anion Exchange

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Chloride

SMCL: 250 mg/L

EFFECTS ON WATER:

• Salty Taste

SOURCES OF CONTAMINANT IN WATER:

• Natural Deposits

RECOMMENDED TREATMENTS:

• Reverse Osmosis

• Distillation

• Anion Exchange

• Deionization

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Aluminum

SMCL: 0.05 to 0.2 mg/L*

*Depending on case-by-case circumstances

EFFECTS ON WATER:

• Colored or Tinted Water

SOURCES OF CONTAMINANT IN WATER:

• Aluminum Coagulation Treatment

• Natural Deposits

RECOMMENDED TREATMENTS:

• Cation Exchange

• Reverse Osmosis

• Distillation

• Ultrafiltration

• Deionization

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Copper

MCLG: 1.3 mg/L

MCL: 1.3 mg/L (action level)

POTENTIAL HEALTH EFFECTS FROM INGESTION:

• Gastrointestinal Irritation

SOURCES OF CONTAMINANT IN DRINKING WATER

• Natural/Industrial Deposits

• Wood Preservatives

• Plumbing

RECOMMENDED TREATMENTS:

• Cation Exchange (20% - 90%)

• Reverse Osmosis

• Distillation

• Polyphosphate/Silicate Feed

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Corosivity

SCML: Non-corrosive

EFFECTS ON WATER:

• Metallic Taste

• Corrosion

• Fixture Staining

• Leaking Plumbing

SOURCES OF CONTAMINANT IN WATER:

• Very high or very low TDS

• Dissolved gases in water (i.e. Oxygen, Carbon Dioxide, & Hydrogen Sulfide)

• Low pH

RECOMMENDED TREATMENTS:

• Calcite or Calcite/Magnesium Oxide

• Soda Ash Chemical Feed

• Polyphosphate Feed

• Removal of Hydrogen Sulfide

• Sodium Silicate Feed

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Iron

SMCL: 0.3 mg/L (Total Iron)

EFFECTS ON WATER:

• Rusty color

• Sediment

• Reddish or Orange Stains

• Metallic Taste

SOURCES OF CONTAMINANT IN WATER:

• Natural Deposits

RECOMMENDED TREATMENTS:

• Filtration (Oxidizing Filters)

• Cation Exchange

• Oxidation/Precipitation/Filtration

• Disinfection

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Manganese

SMCL: 0.05 mg/L (Total Manganese)

EFFECTS ON WATER:

• Dark, Brown-Black Stains

• Bitter, Metallic Taste

SOURCES OF CONTAMINANT IN WATER:

• Natural Deposits

RECOMMENDED TREATMENTS:

• Filtration (Oxidizing Filters)

• Cation Exchange

• Oxidation/Precipitation/Filtration

• Disinfection/Filtration

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Zinc

SMCL: 5 mg/L

EFFECTS ON WATER:

• Metallic Taste

SOURCES OF CONTAMINANT IN WATER:

• Industrial Wastes

• Natural Deposits

RECOMMENDED TREATMENTS:

• Reverse Osmosis

• Distillation

• Cation Exchange

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Total Dissolved Solids

SMCL: 500 mg/L

EFFECTS ON WATER:

• Hard Water

• Deposits on Glasses & Fixtures

SOURCES OF CONTAMINANT IN WATER:

• Natural Deposits

• Brackish Water Intrusion

RECOMMENDED TRATMENTS:

• Reverse Osmosis

• Distillation

• Deionization by Ion Exchange

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