Tests to run
- Manganese
- Iron
- pH
- Hydrogen sulfide
Well water problem guide
Black Stains in Well Water
Black staining appears on fixtures, laundry, or toilet tanks.
Likely causes
- Manganese
- Sulfide minerals
- Rubber plumbing deterioration
Next steps
- Retest manganese if infants use the water
- Consider oxidizing filtration
- Check treatment equipment for media fouling
Black Stains in Well Water by state
Black Stains in Well Water in Alabama
Testing and troubleshooting guide for Alabama private well owners.
Black Stains in Well Water in Alaska
Testing and troubleshooting guide for Alaska private well owners.
Black Stains in Well Water in Arizona
Testing and troubleshooting guide for Arizona private well owners.
Black Stains in Well Water in Arkansas
Testing and troubleshooting guide for Arkansas private well owners.
Black Stains in Well Water in California
Testing and troubleshooting guide for California private well owners.
Black Stains in Well Water in Colorado
Testing and troubleshooting guide for Colorado private well owners.
Black Stains in Well Water in Connecticut
Testing and troubleshooting guide for Connecticut private well owners.
Black Stains in Well Water in Delaware
Testing and troubleshooting guide for Delaware private well owners.
Black Stains in Well Water in District of Columbia
Testing and troubleshooting guide for District of Columbia private well owners.
Black Stains in Well Water in Florida
Testing and troubleshooting guide for Florida private well owners.
Black Stains in Well Water in Georgia
Testing and troubleshooting guide for Georgia private well owners.
Black Stains in Well Water in Hawaii
Testing and troubleshooting guide for Hawaii private well owners.
Black Stains in Well Water in Idaho
Testing and troubleshooting guide for Idaho private well owners.
Black Stains in Well Water in Illinois
Testing and troubleshooting guide for Illinois private well owners.
Black Stains in Well Water in Indiana
Testing and troubleshooting guide for Indiana private well owners.
Black Stains in Well Water in Iowa
Testing and troubleshooting guide for Iowa private well owners.
Black Stains in Well Water in Kansas
Testing and troubleshooting guide for Kansas private well owners.
Black Stains in Well Water in Kentucky
Testing and troubleshooting guide for Kentucky private well owners.
Black Stains in Well Water in Louisiana
Testing and troubleshooting guide for Louisiana private well owners.
Black Stains in Well Water in Maine
Testing and troubleshooting guide for Maine private well owners.
Black Stains in Well Water in Maryland
Testing and troubleshooting guide for Maryland private well owners.
Black Stains in Well Water in Massachusetts
Testing and troubleshooting guide for Massachusetts private well owners.
Black Stains in Well Water in Michigan
Testing and troubleshooting guide for Michigan private well owners.
Black Stains in Well Water in Minnesota
Testing and troubleshooting guide for Minnesota private well owners.
Black Stains in Well Water in Mississippi
Testing and troubleshooting guide for Mississippi private well owners.
Black Stains in Well Water in Missouri
Testing and troubleshooting guide for Missouri private well owners.
Black Stains in Well Water in Montana
Testing and troubleshooting guide for Montana private well owners.
Black Stains in Well Water in Nebraska
Testing and troubleshooting guide for Nebraska private well owners.
Black Stains in Well Water in Nevada
Testing and troubleshooting guide for Nevada private well owners.
Black Stains in Well Water in New Hampshire
Testing and troubleshooting guide for New Hampshire private well owners.
Black Stains in Well Water in New Jersey
Testing and troubleshooting guide for New Jersey private well owners.
Black Stains in Well Water in New Mexico
Testing and troubleshooting guide for New Mexico private well owners.
Black Stains in Well Water in New York
Testing and troubleshooting guide for New York private well owners.
Black Stains in Well Water in North Carolina
Testing and troubleshooting guide for North Carolina private well owners.
Black Stains in Well Water in North Dakota
Testing and troubleshooting guide for North Dakota private well owners.
Black Stains in Well Water in Ohio
Testing and troubleshooting guide for Ohio private well owners.
Black Stains in Well Water in Oklahoma
Testing and troubleshooting guide for Oklahoma private well owners.
Black Stains in Well Water in Oregon
Testing and troubleshooting guide for Oregon private well owners.
Black Stains in Well Water in Pennsylvania
Testing and troubleshooting guide for Pennsylvania private well owners.
Black Stains in Well Water in Rhode Island
Testing and troubleshooting guide for Rhode Island private well owners.
Black Stains in Well Water in South Carolina
Testing and troubleshooting guide for South Carolina private well owners.
Black Stains in Well Water in South Dakota
Testing and troubleshooting guide for South Dakota private well owners.
Black Stains in Well Water in Tennessee
Testing and troubleshooting guide for Tennessee private well owners.
Black Stains in Well Water in Texas
Testing and troubleshooting guide for Texas private well owners.
Black Stains in Well Water in Utah
Testing and troubleshooting guide for Utah private well owners.
Black Stains in Well Water in Vermont
Testing and troubleshooting guide for Vermont private well owners.
Black Stains in Well Water in Virginia
Testing and troubleshooting guide for Virginia private well owners.
Black Stains in Well Water in Washington
Testing and troubleshooting guide for Washington private well owners.
Black Stains in Well Water in West Virginia
Testing and troubleshooting guide for West Virginia private well owners.
Black Stains in Well Water in Wisconsin
Testing and troubleshooting guide for Wisconsin private well owners.
Black Stains in Well Water in Wyoming
Testing and troubleshooting guide for Wyoming private well owners.
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.
Save problem notes in the iOS app