Tests to order in NH
- Manganese
- Iron
- pH
- Hydrogen sulfide
New Hampshire well water problem / Black Stains in Well Water
Black Stains in Well Water in New Hampshire
Black staining appears on fixtures, laundry, or toilet tanks. For New Hampshire 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 New Hampshire 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
Interpret once on the web. Track forever in the app.
Save test history, set annual reminders, compare results over time, and create a shareable report for your family or water professional.
Track symptoms and lab results in the app