Copper in Missouri well water
In Missouri, 0% of 2,655 tested private well samples exceeded the EPA limit for copper (1.3 mg/L).
Copper leaches from pipes when water is acidic. Above 1.3 mg/L it causes stomach upset, and long-term exposure can harm the liver and kidneys. Blue-green stains on fixtures are the giveaway.
Check your copper 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 Missouri well for copper
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 copper
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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 copper
Under-sink reverse osmosis system
under-sink or countertop, about $300
Look for NSF/ANSI 58 certification listing the contaminant you need removed.
For copper
Acid neutralizing filter
whole-house, at the point of entry, about $1,200
Raises pH so plumbing stops leaching lead and copper.
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 copper in Missouri: certified labs, state programs and prices.
By county, from individual samples
Public monitoring samples against the EPA limit (1.3 mg/L); counties with at least 30 samples.
| County | Above EPA limit | Samples | Detected | Median | Highest |
|---|---|---|---|---|---|
| Reynolds | 54 | 83% | 0.005 | 0.138 mg/L | |
| Jasper | 50 | 80% | 0 | 0.1 mg/L | |
| Pulaski | 479 | 78% | 0 | 0.07 mg/L | |
| St. Francois | 113 | 50% | 0 | 0.03 mg/L | |
| Shannon | 34 | 47% | 0 | 0.03 mg/L | |
| St. Charles | 140 | 29% | 0 | 0.02 mg/L | |
| Franklin | 48 | 23% | 0 | 0.008 mg/L | |
| Clay | 106 | 14% | 0 | 0.002 mg/L | |
| Jackson | 421 | 13% | 0 | 0.055 mg/L | |
| Boone | 866 | <1% | 0 | 0.001 mg/L |
- Carroll township, Reynolds County0% of 53
- Cullen township, Pulaski County0% of 74
- St. Francois township, St. Francois County0% of 61
- Piney township, Pulaski County0% of 248
- Roubidoux township, Pulaski County0% of 156
- New Haven township, Franklin County0% of 35
- Boone township, St. Charles County0% of 108
- Randolph township, St. Francois County0% of 42
- Chouteau township, Clay County0% of 104
- Blue township, Jackson County0% of 421
- Rock Bridge township, Boone County0% of 698
- Katy township, Boone County0% of 154
Sources
- Individual samples from the USGS Water Quality Portal and state monitoring, summarized per geography. copper counts and shares are listed on each county and town page with their sources.