Manganese in Montana well water
In Montana, manganese was detected in 82% of 14,772 tested private well samples.
Manganese stains fixtures and laundry above 50 ug/L. EPA's health advisory is 300 ug/L; infants are the most sensitive, and newer research links elevated manganese to neurological effects in children. It is one of the most common private well problems in New England.
Check your manganese number
Type the value from your lab report. It is compared to the EPA limit, the same way the full interpretation does it.
Test your Montana well for manganese
Certified lab analysis of your own tap water, bottles and prepaid return shipping included. The Essential well panel covers arsenic, uranium, nitrate, lead, copper, manganese, iron, sodium and bacteria; radon and PFAS are add-ons.
Order the Tap Score well water test kit, from $209Already tested? Upload the report
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Systems that remove manganese
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Some links below are affiliate links. If you buy through one, the merchant pays us a commission at no extra cost to you. It does not change which products we list or what the data says.
For manganese
Iron and manganese oxidizing filter
whole-house, at the point of entry, about $1,800
Air-injection or greensand media; fixes staining at the source.
Rather have it installed and sized for your well? Book a free in-home water test with a licensed local company.
Where to get a well tested for manganese in Montana: certified labs, state programs and prices.
By county, from individual samples
Public monitoring samples against the EPA limit; counties with at least 30 samples.
| County | Above EPA limit | Samples | Detected | Median | Highest |
|---|---|---|---|---|---|
| Deer Lodge | no limit | 122 | 98% | 280 | 4,100 ug/L |
| Judith Basin | no limit | 95 | 94% | 30 | 6,900 ug/L |
| Rosebud | no limit | 7,479 | 93% | 160 | 33,900 ug/L |
| Sheridan | no limit | 127 | 92% | 140 | 2,400 ug/L |
| Jefferson | no limit | 301 | 92% | 102 | 8,400 ug/L |
| Powell | no limit | 272 | 91% | 30 | 10,600 ug/L |
| Roosevelt | no limit | 212 | 89% | 140 | 14,000 ug/L |
| Wibaux | no limit | 64 | 89% | 40 | 500 ug/L |
| Chouteau | no limit | 62 | 87% | 120 | 130,000 ug/L |
| Musselshell | no limit | 109 | 85% | 20 | 180 ug/L |
| Lewis and Clark | no limit | 385 | 85% | 20 | 5,000 ug/L |
| Powder River | no limit | 1,091 | 83% | 40 | 9,750 ug/L |
| Liberty | no limit | 45 | 82% | 70 | 13,000 ug/L |
| Silver Bow | no limit | 492 | 80% | 16.5 | 35,200 ug/L |
| Cascade | no limit | 61 | 79% | 42 | 21,000 ug/L |
- Anaconda CCD, Deer Lodge County100% detected of 40
- Stanford CCD, Judith Basin County98% detected of 44
- Warm Springs CCD, Deer Lodge County98% detected of 82
- Medicine Lake CCD, Sheridan County97% detected of 66
- Geraldine CCD, Chouteau County97% detected of 32
- Deer Lodge CCD, Powell County96% detected of 232
- Boulder CCD, Jefferson County94% detected of 279
- Rosebud CCD, Rosebud County93% detected of 7,321
- Butte-Silver Bow Northwest CCD, Silver Bow County93% detected of 237
- Fort Peck Reservation CCD, Roosevelt County90% detected of 198
- Wibaux CCD, Wibaux County89% detected of 47
- Chester CCD, Liberty County88% detected of 34
- Melstone CCD, Musselshell County88% detected of 32
- Northeast Yellowstone CCD, Yellowstone County87% detected of 62
- Roundup CCD, Musselshell County86% detected of 37
- South of the Yellowstone CCD, Sweet Grass County85% detected of 40
- Helena CCD, Lewis and Clark County85% detected of 359
- Geyser CCD, Judith Basin County84% detected of 31
- Otter CCD, Powder River County84% detected of 986
- North McCone CCD, McCone County84% detected of 43
Sources
- Individual samples from the USGS Water Quality Portal and state monitoring, summarized per geography. manganese counts and shares are listed on each county and town page with their sources.