Water Source: Table Rock and North Saluda reservoirs (Stovall plant) and Lake Keowee (Adkins plant)
Where Greenville's city water comes from
- SourceTable Rock and North Saluda reservoirs, and Lake Keowee
- TreatmentStovall plant (the reservoirs) and Adkins plant (Lake Keowee)
- DisinfectionChloramines, used since the 1930s
- Your tapThen your own pipes and water heater, which our free test checks
Please note: This page is a plain-language overview and is not the official report. Values shown are the federal or state limits, not measured results — refer to your utility's published Consumer Confidence Report for current measured values. CCRs reflect the utility's system; conditions at your own tap can differ due to household plumbing. Book a free in-home test for tap-level data.
Key Contaminants Detected
Total Trihalomethanes (TTHMs)
DetectedSee current CCRLimit80 ppb (EPA MCL)
A regulated disinfection byproduct. Chloramine also forms byproducts such as NDMA that are not included in standard TTHM reporting.
Haloacetic Acids (HAA5)
DetectedSee current CCRLimit60 ppb (EPA MCL)
A regulated disinfection byproduct formed when disinfectants react with organic matter in source water.
Manganese
DetectedSee current CCRLimit0.05 mg/L (secondary)
The EPA's secondary standard addresses staining and taste; a separate lifetime health advisory is set at 0.3 mg/L.
Total Hardness
DetectedVaries by areaLimitNo federal limit
Hardness is not federally regulated. It affects scale formation on fixtures, appliances, and water heaters.
What an In-Home Test Adds to Your CCR
A Consumer Confidence Report reflects water quality within the utility's system. ClearFlow's free in-home test measures conditions at your own faucet, such as hardness, iron, manganese, pH and dissolved solids — values that can differ from system-wide results because of your home's plumbing.
Related guides
- Water Filtration & Testing in Greenville
- Free Water Testing in Greenville, SC
- PFAS in Your Drinking Water
Frequently asked questions
Is Greenville Water System water safe to drink?
Greenville Water is required to meet federal standards and draws from protected mountain reservoirs. Chloramine disinfection forms its own set of byproducts, which is worth understanding if you're choosing a home filter.
Does Greenville use chloramine or chlorine?
Greenville Water uses chloramine (chlorine + ammonia). This requires catalytic carbon — not standard activated carbon — for effective removal in home filters.
How do I get a free water test in Greenville?
Call ClearFlow at (843) 742-1196. We serve Greenville County and include chloramine, manganese, and hardness in our standard free in-home test.