Tests to order in WA
- Manganese
- Iron
- pH
- Hydrogen sulfide
Washington well water problem / Black Stains in Well Water
Black Stains in Well Water in Washington
Black staining appears on fixtures, laundry, or toilet tanks. For Washington private wells, the safest path is to match the symptom with lab testing before choosing treatment.
Likely causes
- Manganese
- Sulfide minerals
- Rubber plumbing deterioration
What to do next
- Retest manganese if infants use the water
- Consider oxidizing filtration
- Check treatment equipment for media fouling
Related Washington well water topics
Rotten Egg Smell in Well Water
Water smells like rotten eggs, sulfur, or sewage.
Orange or Rust Stains from Well Water
Sinks, tubs, toilets, or laundry develop orange-brown stains.
Blue-Green Stains from Well Water
Blue or green stains appear around drains and fixtures.
Salty Tasting Well Water
Water tastes salty, brackish, or mineral-heavy.
Metallic Taste in Well Water
Water tastes metallic, bitter, or like pennies.
Cloudy or Milky Well Water
Water looks cloudy, white, or milky in a glass.
Keep your well history
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Save test history, set annual reminders, compare results over time, and create a shareable report for your family or water professional.
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