Copper in Texas well water
In Texas, 0% of 9,386 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 Texas 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 Texas: 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 |
|---|---|---|---|---|---|
| Lamb | 42 | 93% | 0.002 | 0.041 mg/L | |
| Reagan | 58 | 90% | 0.003 | 0.028 mg/L | |
| Upton | 45 | 87% | 0.003 | 0.018 mg/L | |
| Midland | 64 | 86% | 0.002 | 0.106 mg/L | |
| Martin | 58 | 84% | 0.003 | 0.412 mg/L | |
| Cass | 38 | 84% | 0.007 | 0.087 mg/L | |
| Comal | 246 | 81% | 0.002 | 0.03 mg/L | |
| Edwards | 51 | 80% | 0.002 | 0.04 mg/L | |
| Gillespie | 56 | 79% | 0.004 | 0.026 mg/L | |
| Wise | 36 | 78% | 0.003 | 0.018 mg/L | |
| Lynn | 39 | 77% | 0.002 | 0.258 mg/L | |
| Uvalde | 237 | 77% | 0.001 | 0.05 mg/L | |
| Starr | 34 | 76% | 0.004 | 0.035 mg/L | |
| Tarrant | 72 | 76% | 0.001 | 0.023 mg/L | |
| Gaines | 57 | 74% | 0.002 | 0.018 mg/L |
- Fort Worth CCD, Tarrant County0% of 33
- Big Lake CCD, Reagan County0% of 58
- Tarzan-Lenorah CCD, Martin County0% of 46
- Rankin CCD, Upton County0% of 38
- Midland South CCD, Midland County0% of 58
- Sabinal CCD, Uvalde County0% of 38
- New Braunfels CCD, Comal County0% of 201
- Rocksprings South CCD, Edwards County0% of 36
- Canyon Lake CCD, Comal County0% of 45
- San Antonio Northeast CCD, Bexar County0% of 39
- Hondo CCD, Medina County0% of 163
- Castroville-LaCoste CCD, Medina County0% of 81
- Northwest Harris CCD, Harris County0% of 66
- Burnet CCD, Burnet County0% of 35
- San Antonio North CCD, Bexar County0% of 484
- Uvalde CCD, Uvalde County0% of 199
- D'Hanis CCD, Medina County0% of 66
- Seminole CCD, Gaines County0% of 45
- East Crockett CCD, Crockett County0% of 42
- Brownfield CCD, Terry County0% of 38
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.