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Understanding Water Contaminants: Sources, Health Effects, and Solutions

Water quality is impacted by various contaminants like nitrates, phosphates, coliform bacteria, and more. Each contaminant has acceptable ranges, sources, and indications of presence. High nitrate levels, from human and animal waste or fertilizers, can cause "Blue Baby Syndrome," while excessive phosphates lead to algal blooms. Water hardness affects household appliances, and pH imbalances can corrode pipes. Solutions include reverse osmosis, responsible fertilizer use, and proper waste management. Ensuring water quality is vital for health and the environment.

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Understanding Water Contaminants: Sources, Health Effects, and Solutions

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  1. Water Contaminants

  2. Nitrate Acceptable ranges: 0-10 mg/L Source of contaminant: Human and animal waste, fertilizer, natural nutrients Indication of contaminant: algal blooms, eutrophication Health Problems: “Blue Baby Syndrome” Nitrates/nitrites in body block oxygen absorption Solution: Reverse Osmosis; dig new well; spread manure away from water sources; responsible use of fertilizer

  3. Water Hardness Acceptable ranges: 0-60=soft; 61-120=moderate; 121-180=hard Source of contaminant: Natural dissolved minerals (calcium and magnesium) Indication of contaminant: In homes/industry: White scale build up; soap won’t get “sudsy”, dry skin Health Problems: None (dry skin); Hard water is tough on appliances. Solution: Water softener (but that puts Na in water and removes Ca and Mg) for household use.

  4. pH (acidity/alkalinity) Acceptable ranges: 6.5-8.5 (7 is neutral) Source of contaminant: Rock and soil (natural), pollutants Indication of contaminant: Sensitive species and immature animals are affected; blue-green staining of drains Health Problems: Can cause water to corrode pipes, dissolve toxic metals Solution: Flood control, alleviating stream bank erosion, mitigating stream warming

  5. Phosphates Acceptable ranges: 0 - 1 ppm (0.1mg/L) Source of contaminant: Detergents, fertilizers, animal wastes Indication of contaminant: high algae or aquatic plant growth in natural water; “bubbling/foaming”; eutrophication Health Problems: None for humans – pop has lots of phosphates in them! Causes eutrophication of bodies of water Solution: Eliminate sources; responsible for animal wastes; avoid washing cars on driveway/streets; responsible use of fertilizer

  6. Coliform Bacteria Acceptable ranges: 125 colonies/100 mL (e. coli) Source of contaminant: Human and animal feces, (leaking septic tanks, spreading manure) Indication of contaminant: Frequent digestive problems Health Problems: Common gastrointestinal illnesses; indication that other bacteria may be present Solution: Proper functioning septic systems, prevent livestock from accessing streams, manure management practices

  7. Dissolved Oxygen Acceptable ranges: 7mg/L and above for aquatic life Source of contaminant: Lack of plant life; too much oxygen-utilizing bacteria (decomposition) Indication of contaminant: Lack of plant life; too much decomposing organic matter Health Problems: None if in drinking water; harmful to aquatic life Solution: Remove decomposing matter; increase plant life; reduce nitrate/phosphate levels; aerate body of water; make sure no thermal pollution exists

  8. Carbon Dioxide Acceptable ranges: Over 20 mg/L harmful to aquatic life Source of contaminant: Respiration of aquatic life Indication of contaminant: Fish or aquatic life dying Health Problems: None in drinking water; aquatic life will die or be unable to reproduce Solution: Introduce more plant life; remove some of the fish population

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