York County, SC

Water Treatment in Tega Cay, SC

Tega Cay homes on City of Tega Cay get soft, treated city water. Here's what's worth treating, and what isn't.

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Local water snapshot

City of Tega Cay

From its 2025 water quality report · read the full report

Water source: Purchased from the Town of Fort Mill, which receives its water from the City of Rock Hill (Lake Wylie raw water); City of Tega Cay serves about 10,500 people.; City of Tega Cay, 2025
Hardness: 35 mg/L; About 2 grains per gallon: soft by USGS classes. As reported (2025).; City of Tega Cay, 2025
Disinfectant: Free chlorine; City of Tega Cay, 2025
TTHM (disinfection byproducts): 44 ppb; As reported (2025); federal limit 80 ppb.; City of Tega Cay, 2025
HAA5 (disinfection byproducts): 27 ppb; As reported (2025); federal limit 60 ppb.; City of Tega Cay, 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.; City of Tega Cay, 2025
Violations: Yes, see report; The report lists one or more violations and explains them. Read it for details.; City of Tega Cay, 2025

What this means for your home

Tega Cay is inside City of Tega Cay's service area as mapped by local government.

At 35 mg/L (about 2 grains per gallon), City of Tega Cay water is soft. You very likely don't need a water softener.
City of Tega Cay 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.
11.8% of homes in Tega Cay 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 Tega Cay 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.

Tega Cay at a glance

Population: 14,457; July 2025 estimate · U.S. Census Bureau, 2025
Households: 4,940; U.S. Census Bureau (via Census Reporter), 2024
Owner-occupied homes: 84.3%; U.S. Census Bureau (via Census Reporter), 2024
Median home value: $529,200; U.S. Census Bureau (via Census Reporter), 2024
Homes built before 1980: 11.8%; U.S. Census Bureau (via Census Reporter), 2024

Tega Cay water questions

Who supplies water in Tega Cay?

Tega Cay is inside City of Tega Cay's service area as mapped by local government. Its supply is purchased from the town of fort mill, which receives its water from the city of rock hill (lake wylie raw water). EPA's registry lists it serving about 10,500 people.

Is Tega Cay water hard?

City of Tega Cay reported hardness of 35 mg/L in its 2025 report, which is soft by USGS classes. Most homes on it don't need a softener.

Does City of Tega Cay 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.

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

Census estimates put 11.8% of Tega Cay 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 Tega Cay?

Yes. Tega Cay is about 32 minutes from our Charlotte base. Installation is performed by an independent, SC-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 South Carolina. Your independent licensed plumber determines and pulls any permit York County requires.

Nearby areas we serve

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

Get an honest answer about Tega Cay water.

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