Is South Burlington, VT Tap Water Safe to Drink?
South Burlington tap water is legally compliant, but one contaminant exceeds health guidelines. Specifically: lead at 11 ppb (above the upcoming 10 ppb standard, effective 2027). A point-of-use filter is recommended for drinking and cooking water.
Hardness Scale: Where South Burlington Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How South Burlington Compares
South Burlington's water is 86% softer than the national average of 138 PPM - ranking in the bottom 92% for hardness nationwide. Most homes here do not need a softener. Within Vermont, South Burlington has the 3rd hardest water out of 5 cities - 0% below the state average of 20 PPM. Among smaller cities, South Burlington ranks #254 of 288 for hardness.
What South Burlington's Water Means for Your Home
Hardness: 20 PPM - Low Concern
South Burlington's water is slightly hard at 20 PPM. Most households won't notice any issues at this level. Scale buildup is minimal, and a water softener would be overkill. South Burlington is softer than 92% of US cities. If you're thinking about water treatment, contaminant filtration is where to focus your money, not softening.
Contaminants & Safety
Lead is the main concern here. At 11 ppb, South Burlington's average is well above the health guideline of zero — there is no safe level of lead, especially for children. Lead typically enters your water from old pipes, not the source itself. Quick fix: run cold water for 30 seconds before drinking. Better fix: a certified lead-reduction filter (NSF/ANSI Standard 53) at your kitchen faucet. If your home was built before 1986, testing is strongly recommended.
What's in the Treatment Process
South Burlington's surface water supply requires heavy chlorination to stay safe — but that creates a tradeoff. The treatment process generates disinfection byproducts: TTHMs at 27.4 ppb (34% of the legal limit, but 183x the EWG guideline) and HAA5 at 21.6 ppb (36% of the legal limit, but 216x 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.
Chromium-6 was detected at 0.0475 ppb, which is 2.4x the EWG health guideline. There's no separate federal limit for chromium-6, only total chromium. A reverse osmosis system is the most effective removal method. 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) | 20 PPM | < 60 PPM | No federal limit | ✓ OK |
| Total Dissolved Solids | 30 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 | 11 ppb | 0 ppb (no safe level) | 15 ppb (10 ppb in 2027) | ⚠ Elevated |
| Chlorine / Chloramine | 0.8 mg/L | Taste threshold ~1.0 | 4.0 mg/L | ✓ Normal |
| Nitrate | 0.0733 mg/L | 5 mg/L | 10 mg/L | ✓ OK |
Recommendations for South Burlington Homes
Recommended Filter for South Burlington
Lead at 11 ppb exceeds the upcoming 10 ppb action level (effective 2027). A certified filter reduces these contaminants effectively.
How to Test Your Water in South Burlington
Lead enters water from your home's plumbing, not the treatment plant — so South Burlington's city-wide average of 11 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 Champlain Water District's annual Consumer Confidence Report for official city-level data.
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About South Burlington's Water Supply
Water Utility: Champlain Water District
Water Source: Lake Champlain (Surface Water)
Population Served: 19,500
Hardness: 20 PPM (1.2 grains per gallon)
South Burlington's drinking water comes from surface sources — Lake Champlain. 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 20,000 residents.
Water quality can vary by neighborhood and season. For your exact numbers, request Champlain Water District'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 Champlain Water District in South Burlington, VT, including ZIP codes:
05403, 05407, 05443, 05445, 05456, 05461, 05462, 05469, 05472, 05473, 05482, 05487, 05491, 05495, 12855, 12936, 12956, 12960, 12961, 12964, 12974, 12993, 12998
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Compare South Burlington to Other Vermont Cities
Frequently Asked Questions About South Burlington Water
Is South Burlington tap water safe to drink?
Where does South Burlington's water come from?
Do I need a water softener in South Burlington?
What water filter is best for South Burlington?
Is South Burlington water safe for babies and infants?
What are disinfection byproducts in South Burlington's water?
Is chromium-6 in South Burlington's water?
Can I drink South Burlington tap water straight from the faucet?
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.
What South Burlington Homeowners Actually Buy
Prioritized for contaminant reduction for homes with 20 PPM water.
Affiliate disclosure: we may earn a commission. Selection based on South Burlington's water data.