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NC · about 33 min from Charlotte

Water Treatment in Union County, NC

Public water, private wells and what local data shows, for the 14 Union County communities we serve.
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Largest public system

Union County Water: Disinfectant
Chlorine and chloramine (both listed)
Union County Water (Union County, NC), 2025
Union County Water: TTHM (disinfection byproducts)
28.75 ppb
As reported (2025); federal limit 80 ppb.
Union County Water (Union County, NC), 2025
Union County Water: HAA5 (disinfection byproducts)
14.75 ppb
As reported (2025); federal limit 60 ppb.
Union County Water (Union County, NC), 2025
Union County Water: Lead (at sampled homes' taps)
Not detected
Not detected (2025); 0 sampled homes above the action level. The federal action level is 15 ppb.
Union County Water (Union County, NC), 2025

What this means for your home

  • 4 public water systems serve the towns we cover in Union County. The largest, Union County Water, publishes the figures above.
  • State testing of private wells in Union County found the results below. They describe the wells that were tested, not every well, which is why we start every well with its own certified-lab test.
  • 1 of the communities we list in Union County have no public water system mapped at their center, so many homes there likely use private wells.

Private wells in Union County

From state testing of private wells. These figures describe the wells that were tested, not every well, so your own certified-lab test is what decides treatment.

Union County Environmental Health states that approximately 25 percent of Union County's population relies on groundwater as their source for drinking water. Union County, NC, 2026

Private-well test results in Union County
ContaminantShare of tested wells above the standardWells testedStandardSource
Arsenic19.46%5,15410 µg/LUNC-Chapel Hill Superfund Research Program (NC DHHS private well test data), 2022Oct 1998–May 2019
Lead1.93%5,14015 µg/LUNC-Chapel Hill Superfund Research Program (NC DHHS private well test data), 2022Oct 1998–May 2019
Copper0.55%2,3541,300 µg/LUNC-Chapel Hill Superfund Research Program (NC DHHS private well test data), 2022Oct 1998–May 2019
Nitrate1.35%1,55010,000 µg/L (10 mg/L)UNC-Chapel Hill Superfund Research Program (NC DHHS private well test data), 2022Oct 1998–May 2019
Iron20.57%2,3532,500 µg/LUNC-Chapel Hill Superfund Research Program (NC DHHS private well test data), 2022Oct 1998–May 2019
Manganese30.54%5,137300 µg/LUNC-Chapel Hill Superfund Research Program (NC DHHS private well test data), 2022Oct 1998–May 2019

How we approach well water

Recommended across Union County

Based on the data above. Your own test results always come first.
Well water treatmentLab test first, then treatment matched to results.City water filtrationCarbon and reverse osmosis for treated city water.Water testingCertified-lab panels and what they measure.

Public water systems in Union County

Systems serving the communities we list. Your water bill names yours.

Communities we serve in Union County

Within 45 minutes

45 to 90 minutes

How it works

  1. Step 1

    Test

    We read your utility's report with you, and run a certified-lab test when your home calls for one.

  2. Step 2

    Design

    You get a written recommendation and quote for only what the data supports.

  3. Step 3

    Licensed install

    An independent licensed plumber installs under a separate agreement with you.

  4. Step 4

    Retest

    We confirm the system is doing what it's certified to do.

More on how it works

Union County at a glance

Population
267,674
July 2025 estimate · U.S. Census Bureau, 2025
Households
84,237
U.S. Census Bureau (via Census Reporter), 2024
Owner-occupied homes
81.6%
U.S. Census Bureau (via Census Reporter), 2024
Median home value
$417,300
U.S. Census Bureau (via Census Reporter), 2024
Homes built before 1980
20%
U.S. Census Bureau (via Census Reporter), 2024

Union County water questions

Who supplies water in Union County?

Several systems do, depending on where you live. The towns we cover are served by Union County Water System, City of Monroe, Town of Wingate, Town of Marshville. Your water bill names your system.

What do private-well tests in Union County show?

19.46% of 5,154 private wells tested (1,003 wells) were above the 10 µg/L EPA drinking water standard (MCL) for arsenic. 1.93% of 5,140 private wells tested (99 wells) were above the 15 µg/L EPA action level for lead. These describe tested wells, not every well in the county.

Are homes in Union County old enough to worry about lead?

About 20% of homes in Union County were built before 1980, by Census estimates. EPA notes homes built before 1986 are more likely to have lead in their plumbing; a certified-lab test at the tap answers it for your home.

Which towns in Union County do you serve?

14 communities, from Indian Trail, Monroe, Waxhaw outward. The county's population center is about 33 minutes from our Charlotte base.

Nearby counties

Every county and town we serveLook up your water by ZIP

Get an honest answer about Union County water.

Tell us about your home and water source. We'll recommend testing first, and only the equipment your results support.

Get my quote (980) 320-2475
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