Well water in Morehouse Parish, Louisiana
In Morehouse Parish, iron was detected in 100% of 33 tested well samples from Louisiana LDEQ ambient ground water results (LDH Private Well Initiative) and USGS Water Quality Portal.
33 individual samples from 14 wells, 1941 to 2020. Data refreshed September 9, 2026.
These are LDEQ monitoring wells sampled by aquifer on a rotation, so the shares describe the aquifer, not a survey of homeowners' wells.
What individual samples found
Each row summarizes every public sample for that contaminant inside Morehouse Parish. Above limit means above the EPA maximum contaminant level; where EPA has no enforceable limit, the row shows a health guideline or nuisance level instead.
| Contaminant | Samples | Detected | Above limit | Median | Highest | Limit | |
|---|---|---|---|---|---|---|---|
| Arsenic 1972 to 2020 | 22 | 68% | 41% | 0.785 | 189 | 10 ug/L EPA limit | |
| Lead 1972 to 2018 | 15 | 53% | 20% | 0 | 191 | 15 ug/L EPA limit | |
| Iron 1955 to 2020 | 33 | 100% | no limit | 20,800 | 348,000 | 300 ug/L nuisance level | |
| Manganese 1990 to 2020 | 18 | 100% | no limit | 743 | 10,600 | 300 ug/L health guideline |
Sampled fewer than 10 times, too few to summarize: Nitrate (2), Copper (7), Uranium (6), Radium (226 + 228) (2), Fluoride (2), Sodium (4), Chloride (3), Radon (3).
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What this means
The contaminants most often above their limit here are arsenic (41% of 22 samples) and lead (20% of 15 samples). A well next door can differ sharply from yours because bedrock fractures, well depth and plumbing all matter, so these rates describe the area, not your tap.
Iron, Manganese, and Chloride are widespread in local groundwater. They are mainly a staining and taste problem, but high manganese also carries a health advisory for infants.
What to test for in Morehouse Parish
- Arsenic41% of 22 local samples were above the limit.
- Lead20% of 15 local samples were above the limit.
- Coliform bacteriaRecommended for every private well, every year.
- RadonMedian local reading is 152 pCi/L.
- NitrateAbove the limit in 1 of 2 local samples; too few to quote a rate.
- CopperDetected in 100% of local samples.
- FluorideDetected in 100% of local samples.
Treatment that fits the local profile
- Arsenic
- Point-of-use reverse osmosis; Adsorptive media (iron-based) whole-house; Anion exchange
- Lead
- Point-of-use reverse osmosis; Certified lead-removal carbon filter; Neutralizing filter to raise pH and stop leaching
- Copper
- Neutralizing filter to raise pH; Point-of-use reverse osmosis
- Fluoride
- Point-of-use reverse osmosis; Activated alumina; Distillation
- Iron
- Oxidizing filter whole-house; Water softener (low levels); Aeration plus filtration
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Common questions
Is there arsenic in well water in Morehouse Parish?
Arsenic was detected in 68% of 22 public well samples in Morehouse Parish, and 41% were above the EPA limit of 10 ug/L. Arsenic has no taste or smell; a lab test is the only way to know your level.
How high is radon in well water in Morehouse Parish?
The median radon level across 3 public samples in Morehouse Parish was 152 pCi/L, with a high of 330 pCi/L. New Hampshire recommends treatment above 2,000 pCi/L.
How often should I test a private well in Morehouse Parish?
Test for bacteria and nitrate every year. Test once for arsenic, uranium, radon, fluoride, manganese and PFAS, then again every three to five years or after any change in taste, color, or plumbing.
Sources
- Louisiana LDEQ ambient ground water results (LDH Private Well Initiative): 64 samples in Morehouse Parish. Ground water sample results from the LDEQ Ambient Ground Water Monitoring Program, published by the Louisiana Department of Health Private Well Initiative. Retrieved September 9, 2026.
- USGS Water Quality Portal: 53 samples in Morehouse Parish. Data from the Water Quality Portal, a service of USGS, EPA and USDA; groundwater samples collected by USGS and cooperators. Retrieved September 3, 2026.
Non-detects count as samples and are treated as zero when computing medians. Exactly at the limit counts as not above it. A sample belongs to the town containing the well's reported coordinates.