Is Marion, NC Tap Water Safe to Drink?
Yes, Marion tap water is safe to drink. Hardness is low at 10 PPM, and no contaminants exceed health guidelines. Most homes here don't need treatment.
Hardness Scale: Where Marion Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How Marion Compares
Marion's water is 93% softer than the national average of 138 PPM - ranking in the bottom 100% for hardness nationwide. Most homes here do not need a softener. Within North Carolina, it ranks #25 of 25 cities (76% below the state average of 41 PPM). Among smaller cities, Marion ranks #285 of 288 for hardness.
What Marion's Water Means for Your Home
Hardness: 10 PPM - Low Concern
Marion's water is soft at just 10 PPM. That's good news for your plumbing, appliances, and skin. Scale buildup is a non-issue here, and a water softener would be a waste of money. Marion is softer than 100% of US cities. If you're thinking about water treatment in Marion, contaminant filtration is the place to invest.
Contaminants & Safety
Lead levels deserve attention. At 5 ppb, Marion is above the ideal of zero, though below the EPA action level of 15 ppb (dropping to 10 ppb in November 2027 under the Lead and Copper Rule Improvements). The lead typically comes from aging service lines or interior plumbing, not the treatment plant. A point-of-use filter certified for lead at the kitchen faucet is a practical safeguard, especially in older homes.
What's in the Treatment Process
Marion's surface water supply requires heavy chlorination to stay safe — but that creates a tradeoff. The treatment process generates disinfection byproducts: TTHMs at 49 ppb (61% of the legal limit, but 327x the EWG guideline) and HAA5 at 39.9 ppb (66% of the legal limit, but 399x the EWG guideline). These are within legal limits, but the EWG sets much tighter thresholds based on cancer-risk research. A whole-house activated carbon filter reduces both chlorine and byproducts. All measurements are within federal legal limits. The EWG guidelines represent a more conservative, health-based standard.
| Contaminant | Detected | Health Guideline | Legal Limit | Status |
|---|---|---|---|---|
| Hardness (as CaCO₃) | 10 PPM | < 60 PPM | No federal limit | ✓ OK |
| Total Dissolved Solids | 22 PPM | < 300 PPM | 500 PPM | ✓ OK |
| PFAS (total) | 0 ppt | — | No total limit | ✓ ND |
| ↳ PFOA | 0 ppt | 0 ppt | 4 ppt (2024) | ✓ OK |
| ↳ PFOS | 0 ppt | 0 ppt | 4 ppt (2024) | ✓ OK |
| Lead | 5 ppb | 0 ppb (no safe level) | 15 ppb (10 ppb in 2027) | ✓ Low |
| Chlorine / Chloramine | 0.8 mg/L | Taste threshold ~1.0 | 4.0 mg/L | ✓ Normal |
| Nitrate | Not reported | 5 mg/L | 10 mg/L | N/A |
Good news for Marion residents. Your water quality is generally good. Most homes in this area do not need a water softener. If you have concerns about lead (especially in buildings constructed before 1986) or chlorine taste, a point-of-use filter is the most practical and cost-effective solution.
How to Test Your Water in Marion
Lead enters water from your home's plumbing, not the treatment plant — so Marion's city-wide average of 5 ppb may not match your tap. Testing your specific faucet is the only way to know. Run cold water for 30 seconds before collecting a sample.
Free option: Request Town of Marion Water's annual Consumer Confidence Report for official city-level data.
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About Marion's Water Supply
Water Utility: Town of Marion Water
Water Source: Catawba River (Surface Water)
Population Served: 9,362
Hardness: 10 PPM (0.6 grains per gallon)
Marion's drinking water comes from surface sources — Catawba River. Surface water requires more extensive treatment than groundwater, including coagulation, filtration, and disinfection. This heavier chlorination is why disinfection byproducts tend to be higher in surface-supplied systems. On the upside, surface sources often deliver softer water than deep aquifers. The system serves 9,000 residents.
Water quality can vary by neighborhood and season. For your exact numbers, request Town of Marion Water's Consumer Confidence Report (CCR) or test your own tap.
ZIP Codes Covered by This Report
This water quality data applies to all areas served by Town of Marion Water in Marion, NC, including ZIP codes:
28018, 28020, 28040, 28090, 28136, 28139, 28160, 28167, 28604, 28605, 28607, 28608, 28611, 28616, 28619, 28628, 28633, 28641, 28645, 28646, 28647, 28653, 28655, 28657, 28661, 28662, 28664, 28671, 28680, 28684, 28690, 28691, 28737, 28749, 28752, 28761, 28765, 28777
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Compare Marion to Other North Carolina Cities
Raleigh South
Indian Trail
Raleigh
Charlotte
Winston-Salem Downtown
Winston-Salem
Durham South
Durham
Frequently Asked Questions About Marion Water
Is Marion tap water safe to drink?
Where does Marion's water come from?
Do I need a water softener in Marion?
What are disinfection byproducts in Marion's water?
Can I drink Marion tap water straight from the faucet?
How does Marion compare to the North Carolina average?
What water filter is best for Marion?
Data sources: Lead and copper data from EPA Safe Drinking Water Act LCR reporting. Contaminant data from utility-reported testing results. PFAS data from EPA UCMR5 (2023–2025). Hardness from USGS and municipal reports. Data reflects system-level testing results and may not match your specific tap due to neighborhood plumbing, season, or recent utility changes. For your utility's latest results, request their Consumer Confidence Report (CCR). Our methodology. Last updated: 2026-02-24.