Manganese in Louisiana well water
In Louisiana, manganese was detected in 96% of 10,297 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 Louisiana 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 Louisiana: 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 |
|---|---|---|---|---|---|
| Jefferson | no limit | 52 | 100% | 20 | 2,000 ug/L |
| Iberia | no limit | 37 | 100% | 214 | 1,400 ug/L |
| Vermilion | no limit | 131 | 100% | 193 | 4,590 ug/L |
| East Carroll | no limit | 36 | 100% | 220 | 3,840 ug/L |
| West Carroll | no limit | 52 | 100% | 245 | 8,960 ug/L |
| Ascension | no limit | 76 | 100% | 107 | 2,020 ug/L |
| Tensas | no limit | 33 | 100% | 779 | 11,500 ug/L |
| Madison | no limit | 48 | 100% | 493 | 16,000 ug/L |
| Calcasieu | no limit | 396 | 99% | 320 | 4,360 ug/L |
| Bossier | no limit | 562 | 99% | 410 | 17,000 ug/L |
| Natchitoches | no limit | 699 | 99% | 480 | 15,600 ug/L |
| Avoyelles | no limit | 413 | 99% | 500 | 15,200 ug/L |
| Red River | no limit | 634 | 99% | 330 | 17,400 ug/L |
| Rapides | no limit | 1,315 | 98% | 700 | 8,000 ug/L |
| Sabine | no limit | 124 | 98% | 20 | 2,340 ug/L |
- District 7, Bossier Parish100% detected of 32
- District 5, Bossier Parish100% detected of 45
- District 12, Bossier Parish100% detected of 60
- District 10, Bossier Parish100% detected of 50
- District I, Rapides Parish100% detected of 82
- District 5, Red River Parish100% detected of 247
- District 8, Bossier Parish100% detected of 46
- District 9, Bossier Parish100% detected of 32
- District 1, Sabine Parish100% detected of 31
- District 7, Webster Parish100% detected of 36
- District 1, Avoyelles Parish100% detected of 91
- District D, Rapides Parish100% detected of 62
- District C, Lafayette Parish100% detected of 36
- District F, Lafayette Parish100% detected of 32
- District 8, Caddo Parish100% detected of 75
- District G, Rapides Parish100% detected of 213
- District 3, Avoyelles Parish100% detected of 205
- District 4, Bossier Parish100% detected of 55
- District F, Rapides Parish100% detected of 128
- District 12, Calcasieu Parish100% detected of 56
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.