Greer Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
7.7
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
206.2 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Greer, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Greer | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Greer compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Greer, South Carolina | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | reservoir |
| Taylors, South Carolina | ≈ 0–60 mg/L | 5 ppt | 🟢 Soft | reservoir |
| Wade Hampton, South Carolina | ≈ 0–60 mg/L | 8.3 ppt | 🟢 Soft | reservoir |
| Five Forks, South Carolina | ≈ 0–60 mg/L | 6.9 ppt | 🟢 Soft | reservoir |
| Mauldin, South Carolina | 129.5 mg/L | 7.2 ppt | 🟠 Hard | reservoir |
National Benchmark
How Greer compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Greer | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Greer's Water Unique?
Local geology and source profile
The Greer Commission of Public Works (CPW) provides drinking water to the city of Greer and surrounding areas in Greenville County, South Carolina. Water is sourced primarily from Lake Cunningham, with supplementation from Lake Robinson on the South Tyger River in northern Greenville County. CPW operates treatment facilities processing this surface water supply for residential, commercial, and industrial customers across its distribution system.
The watershed encompasses the Lake Cunningham basin within the Broad River sub-basin of the Santee River system, draining rural and suburban landscapes in the Piedmont physiographic province. The underlying geology is dominated by ancient metamorphic rocks — gneiss and schist from the Paleozoic era and granitic intrusions — characteristic of the Carolina Slate Belt. Calcium and magnesium ions leach from weathered soils and bedrock during precipitation and runoff into the reservoirs, imparting a moderately mineralised character. No major aquifer is involved, keeping the supply responsive to seasonal rainfall patterns.
At moderately hard levels, water leaves visible scale on fixtures, reduces soap efficiency, and can shorten the lifespan of water heaters, dishwashers, and washing machines by 30–50%. Faucet aerators and showerheads clog most noticeably, requiring regular vinegar soaks. A water softener is recommended — especially in homes with older plumbing — to improve lathering and extend appliance life. Greer CPW's 2024 and 2025 Annual Drinking Water Quality Reports confirm no violations of EPA standards, with the utility earning multiple state excellence awards. Treatment involves coagulation, sedimentation, filtration, and disinfection; full pH, lead, copper, and PFAS data are available in the CCRs at greercpw.com.
Geology & Source: Piedmont Carolina Slate Belt; Precambrian-Paleozoic gneiss, schist, and granitic intrusions — ion leaching from weathered metamorphic soils and bedrock during runoff into reservoirs yields moderately mineralised supply without extreme limestone
Other South Carolina Water Reports
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Frequently Asked Questions
Is Greer's water safe to drink?
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How does Greer compare to the USA average?
Data Sources & Methodology
Water quality data for Greer is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.