Davidson County, NC

Water Treatment in Lexington, NC

What City of Lexington's latest water quality report says, and what it means for a Lexington home.

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Local water snapshot

City of Lexington

From its 2025 water quality report · read the full report

Water source: Lake Thom-A-Lex (two water treatment plants); City of Lexington serves about 19,632 people.; City of Lexington, 2025
Disinfectant: Free chlorine; City of Lexington, 2025
TTHM (disinfection byproducts): 44 ppb; As reported (2025); federal limit 80 ppb.; City of Lexington, 2025
HAA5 (disinfection byproducts): 40 ppb; As reported (2025); federal limit 60 ppb.; City of Lexington, 2025
Lead (at sampled homes' taps): 0 ppb; 90th percentile of homes sampled (2024); 0 sampled homes above the action level. The federal action level is 15 ppb.; City of Lexington, 2025
Violations: None; The 2025 report states there were no violations.; City of Lexington, 2025

What this means for your home

Lexington is inside City of Lexington's service area on the state's water-system map.

City of Lexington'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.
City of Lexington disinfects with free chlorine. If you notice the taste or smell, NSF/ANSI 42 certified carbon reduces it.
Disinfection byproducts (TTHM) were 44 ppb against an 80 ppb limit. That's compliant; some households still prefer a margin, which NSF/ANSI 53 carbon or reverse osmosis provides.
68.1% of homes in Lexington 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 Lexington 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.

Lexington at a glance

Population: 20,238; July 2025 estimate · U.S. Census Bureau, 2025
Households: 7,529; U.S. Census Bureau (via Census Reporter), 2024
Owner-occupied homes: 41.6%; U.S. Census Bureau (via Census Reporter), 2024
Median home value: $179,900; U.S. Census Bureau (via Census Reporter), 2024
Homes built before 1980: 68.1%; U.S. Census Bureau (via Census Reporter), 2024

Lexington water questions

Who supplies water in Lexington?

Lexington is inside City of Lexington's service area on the state's water-system map. Its supply is lake thom-a-lex (two water treatment plants). EPA's registry lists it serving about 19,632 people.

Does City of Lexington 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 Davidson County use private wells?

Many homes outside town water lines do. In state testing of private wells in Davidson County, 4.59% of 697 private wells tested (32 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 Lexington, and does that matter for water?

Census estimates put 68.1% of Lexington 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 Lexington?

Yes. Lexington is about 72 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 Davidson County requires.

Nearby areas we serve

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

Get an honest answer about Lexington water.

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