Union County, NC

Water Treatment in Unionville, NC

What Union County Water System's latest water quality report says, and what it means for a Unionville home.

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Local water snapshot

Union County Water System

From its 2025 water quality report · read the full report

Water source: Two surface sources: the Catawba River (Lancaster County, SC, via the Catawba River Water Supply Project) and Lake Tillery (Stanly County, NC; new Union County intake began February 2024). During emergencies a small portion of the system may receive water from Charlotte Water.; Union County Water System serves about 169,685 people.; Union County Water (Union County, NC), 2025
Disinfectant: Chlorine and chloramine (both listed); Union County Water (Union County, NC), 2025
TTHM (disinfection byproducts): 28.75 ppb; As reported (2025); federal limit 80 ppb.; Union County Water (Union County, NC), 2025
HAA5 (disinfection byproducts): 14.75 ppb; As reported (2025); federal limit 60 ppb.; Union County Water (Union County, NC), 2025
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
Violations: None marked; No violation is marked in the report's results tables.; Union County Water (Union County, NC), 2025

What this means for your home

Unionville is inside Union County Water System's service area on the state's water-system map.

Union County Water System's report doesn't list hardness. Most reservoir-fed systems in this region are soft, but a quick hardness test at your tap is the only way to know before anyone recommends a softener.
Union County Water's report lists both chlorine and chloramine residuals, which can vary by area. A carbon filter certified for chloramine reduction covers either.
Disinfection byproducts (TTHM) were 28.75 ppb against an 80 ppb limit. That's compliant; some households still prefer a margin, which NSF/ANSI 53 carbon or reverse osmosis provides.
25.4% of homes in Unionville were built before 1980. EPA notes homes built before 1986 are more likely to have lead in their plumbing, so a certified-lab lead test at the tap is a sensible first step in an older home.

Recommended for Unionville homes

Based on the data above. Your own test results always come first.

Chlorine taste & odorCertified carbon at the kitchen tap or for the whole home.Drinking-water reverse osmosisNSF/ANSI 58 RO at the kitchen tap.Water testingCertified-lab lead and full-panel testing.Whole-home filtrationSediment plus catalytic carbon for the whole house.

How it works

Step 1
Test
We read your utility's report with you, and run a certified-lab test when your home calls for one.
Step 2
Design
You get a written recommendation and quote for only what the data supports.
Step 3
Licensed install
An independent licensed plumber installs under a separate agreement with you.
Step 4
Retest
We confirm the system is doing what it's certified to do.

Unionville at a glance

Population: 7,322; July 2025 estimate · U.S. Census Bureau, 2025
Households: 2,509; U.S. Census Bureau (via Census Reporter), 2024
Owner-occupied homes: 87.2%; U.S. Census Bureau (via Census Reporter), 2024
Median home value: $336,200; U.S. Census Bureau (via Census Reporter), 2024
Homes built before 1980: 25.4%; U.S. Census Bureau (via Census Reporter), 2024

Unionville water questions

Who supplies water in Unionville?

Unionville is inside Union County Water System's service area on the state's water-system map. Its supply is two surface sources: the catawba river (lancaster county, sc, via the catawba river water supply project) and lake tillery (stanly county, nc; new union county intake began february 2024). during emergencies a small portion of the system may receive water from charlotte water.. EPA's registry lists it serving about 169,685 people.

Does Union County Water report PFAS?

Its latest report doesn't include PFOA or PFOS results we can publish. EPA's enforceable limits for PFOA and PFOS are 4.0 parts per trillion; other proposed PFAS limits are under review.

Do homes in Union County use private wells?

Union County Environmental Health states that approximately 25 percent of Union County's population relies on groundwater as their source for drinking water. In state testing of private wells in Union County, 19.46% of 5,154 private wells tested (1,003 wells) were above the 10 µg/L EPA drinking water standard (MCL) for arsenic. These figures describe the wells that were tested, not every well in the county.

How old are homes in Unionville, and does that matter for water?

Census estimates put 25.4% of Unionville homes as built before 1980. Lead usually comes from a home's own plumbing, not the utility, so in older homes a certified-lab lead test at the tap is the honest starting point.

Do you serve Unionville?

Yes. Unionville is about 40 minutes from our Charlotte base. Installation is performed by an independent, NC-licensed plumbing contractor under a separate agreement with you.

Do I need a permit to install a water treatment system?

Whole-house treatment is plumbing work in North Carolina. Your independent licensed plumber determines and pulls any permit Union County requires.

Nearby areas we serve

All of Union County Every county and town we serve Look up your water by ZIP

Get an honest answer about Unionville water.

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