Well water in Miller County, Georgia
1in4
Testing strongly recommended
tested well samples in Miller County exceeded the EPA limit for nitrate (10 mg/L), based on public data from USGS Water Quality Portal.
585 test results across 13 contaminants from at least 27 wells, 1958 to 2025; nitrate has the most at 128. Data refreshed September 15, 2026.
Compiled by Nick at Well Water Nerd from public records. How these pages are built
An estimated 3,959 people in Miller County get their drinking water from a private well, per USGS 2015 county water use. That is about 68% of residents.
Separately, the USGS national arsenic model estimates that 2% of the 3,959 people on private wells in Miller County draw water above 10 ug/L (the model's range is 1% to 2%), from geology and well depth rather than local tests.
What individual samples found
Each row summarizes every public sample for that contaminant inside Miller County. 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 | Above limit | Samples | Detected | Median | Highest | Limit |
|---|---|---|---|---|---|---|
| Nitrate 1958 to 2025 | 128 | 98% | 2 | 65.2 | 10 mg/L EPA limit | |
| Radium (226 + 228) 2013 to 2015 | 14 | 64% | 0.065 | 9.5 | 5 pCi/L EPA limit | |
| Fluoride 1958 to 2025 | 63 | 57% | 0.01 | 0.5 | 4 mg/L EPA limit | |
| Arsenic 1977 to 2025 | 32 | 19% | 0 | 0.71 | 10 ug/L EPA limit | |
| Copper 1977 to 2025 | 32 | 53% | 0 | 0.009 | 1.3 mg/L EPA limit | |
| Lead 1980 to 2025 | 31 | 61% | 0.068 | 4 | 15 ug/L EPA limit | |
| Uranium 1995 to 2025 | 30 | 90% | 0.061 | 0.712 | 30 ug/L EPA limit | |
| Chloride 1958 to 2025 | no limit | 66 | 100% | 3.2 | 14.4 | 250 mg/L nuisance level |
| Sodium 1958 to 2025 | no limit | 63 | 100% | 2.1 | 6.5 | 20 mg/L health guideline |
| Iron 1977 to 2025 | no limit | 57 | 30% | 0 | 73,000 | 300 ug/L nuisance level |
| Manganese 1977 to 2025 | no limit | 57 | 54% | 0.13 | 2,300 | 300 ug/L health guideline |
| Radon 1993 to 2002 | no limit | 10 | 100% | 105 | 380 | 2,000 pCi/L health guideline |
Sampled fewer than 10 times, too few to summarize: E. coli (2).
Over time
Share of samples above the limit by period. A cell needs ten samples to show; a comparison needs twenty in each period. Later periods sample fewer wells, and often the ones already known to have a problem.
| Contaminant | before 2000 | 2000s | 2010s | 2020s |
|---|---|---|---|---|
| Nitrate | 9%54 samples | 33%40 samples | 39%18 samples | 31%16 samples |
| Fluoride | 0%28 samples | 0%18 samples | n/a | n/a |
Nitrate above the limit in Miller County rose from 9% of 54 samples before 2000 to 33% of 40 in the 2000s.
Closer than the county
See the sampled wells near your address
The same records, drawn around one point: which wells within a few miles were sampled and what they found, how deep the wells next to you were drilled, and any leaking tank or cleanup site within a mile.
Check my addressWhat this means
The contaminants most often above their limit here are nitrate (23% of 128 samples) and radium (226 + 228) (7% of 14 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.
Chloride and Manganese 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 Miller County
- 1Nitrate23% of 128 local samples were above the limit.
- 2Radium (226 + 228)7% of 14 local samples were above the limit.
- 3Coliform bacteriaRecommended for every private well, every year.
- 4RadonMedian local reading is 105 pCi/L.
- 5ChlorideDetected in 100% of local samples.
- 6FluorideDetected in 57% of local samples.
- 7ManganeseDetected in 54% of local samples.
Test your Miller County well for nitrate, radium (226 + 228) and coliform bacteria
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
Just want bacteria checked first? Tap Score coliform and E. coli test, $99. Coliform and E. coli are the tests every well needs every year.
Want a quick look before paying for a lab? Home well water test strips on Amazon check hardness, iron, pH and nitrate in minutes. They are a screen, not a result: arsenic, bacteria, uranium and PFAS need a certified lab.
Affiliate links: the merchant pays us a commission and the price is the same for you. It does not change what the data above says. As an Amazon Associate we earn from qualifying purchases.
Where to get a well tested in Georgia: certified labs, state programs and prices.
Already have results back? Get your lab report read against the Miller County numbers, $29. Every line explained, ranked by what matters, with the fix for each.
The rock under Miller County
Floridan aquifer system
Carbonate-rock. Limestone and dolomite move water through cracks and solution channels, sometimes very fast. Bacteria and nitrate can travel from the surface to a well in days, so annual bacteria testing matters more here than most places; hardness is a given.
Classification from the USGS Principal Aquifers of the United States (national map, 2003 edition, GIS release 2015), read at the county centroid. A single well can sit in a different unit, especially near a boundary.
Official help in Georgia
Two places to start that are not selling anything: the state program that answers private well questions, and its list of labs certified to run drinking water tests. A certified lab is the difference between a result you can act on and a number.
- Well Water, Georgia Department of Public Health
- Drinking Water (certified laboratory lists), Georgia EPD
Treatment that fits the local profile
Nitrate
Point-of-use reverse osmosis; Anion exchange; Distillation
Radium (226 + 228)
Water softener (cation exchange); Point-of-use reverse osmosis
Systems we would look at first
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 nitrate
Under-sink reverse osmosis system
under-sink or countertop, about $300
Look for NSF/ANSI 58 certification listing the contaminant you need removed.
For nitrate
Aquasana SmartFlow reverse osmosis
under-sink or countertop, about $225
Certified to NSF/ANSI 58 and 53 to reduce arsenic (96%, pentavalent), fluoride (90%), lead (99%), nitrate, nitrite and PFOA/PFOS at the kitchen tap, with a remineralizer.
Free, no obligation
Get on the list for a free in-home water test in Miller County
No water treatment company serves Miller County through Well Water Nerd yet. We are signing licensed companies on county by county: they test at your tap for free, walk you through the numbers, and quote treatment only if something needs fixing. Leave your details and you are first in line. Nothing is shared until a company joins for Miller County, and you get an email naming it first.
Common questions
Is there arsenic in well water in Miller County?
Arsenic was detected in 19% of 32 public well samples in Miller County, and 0% 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 Miller County?
The median radon level across 10 public samples in Miller County was 105 pCi/L, with a high of 380 pCi/L. New Hampshire recommends treatment above 2,000 pCi/L.
How often should I test a private well in Miller County?
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.
Counties near Miller County
Closest first. Groundwater does not stop at a line on a map, so the next county over is a fair second opinion.
Want the numbers themselves? Download the Georgia dataset as CSV, every county and town, with the sources named.
Sources
- USGS Water Quality Portal: 585 samples in Miller County. Data from the Water Quality Portal, a service of USGS, EPA and USDA; groundwater samples collected by USGS and cooperators. Retrieved September 3, 2026.
- USGS national arsenic model (Ayotte 2017): estimated share of 3,959 people on private wells in Miller County above 10 ug/L of arsenic, from geology, well depth and land use. County estimates of domestic well users with arsenic above 10 ug/L from the USGS national logistic regression model (Ayotte, Medalie and Qi, 2017), with private well population from the USGS 2015 county water-use compilation (Dieter and others, 2018). Retrieved September 15, 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.