Is Keene, NH Tap Water Safe to Drink?
Yes, Keene tap water is safe to drink. Hardness is low at 15 PPM, and no contaminants exceed health guidelines. Most homes here don't need treatment.
Hardness Scale: Where Keene Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How Keene Compares
Keene's water is 89% softer than the national average of 138 PPM - ranking in the bottom 97% for hardness nationwide. Most homes here do not need a softener. Within New Hampshire, it ranks #6 of 6 cities (37% below the state average of 24 PPM). Among smaller cities, Keene ranks #275 of 288 for hardness.
What Keene's Water Means for Your Home
Hardness: 15 PPM - Low Concern
Keene's water is soft at just 15 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. Keene is softer than 97% of US cities. If you're thinking about water treatment in Keene, contaminant filtration is the place to invest.
Contaminants & Safety
Beyond hardness, Keene's water is within EPA guidelines for regulated contaminants. Chlorine sits at 1.5 mg/L — normal for municipal systems, but enough to notice. 2 contaminants exceed EWG's stricter health guidelines, though all are within legal limits. If your water tastes like a pool or your skin feels dry after showers, a whole-house carbon filter is the simplest fix. A shower filter is a quick, affordable starting point that most people notice immediately. Want the full picture? Request your utility's annual Consumer Confidence Report for neighborhood-level data.
What's in the Treatment Process
Keene's surface water supply requires heavy chlorination to stay safe — but that creates a tradeoff. The treatment process generates disinfection byproducts: HAA5 at 21 ppb (null% of the legal limit, but 350x 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 0.0766 ppb, which is 3.8x 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) | 15 PPM | < 60 PPM | No federal limit | ✓ OK |
| Total Dissolved Solids | 23 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 | 1 ppb | 0 ppb (no safe level) | 15 ppb (10 ppb in 2027) | ✓ Low |
| Chlorine / Chloramine | 1.5 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 Keene 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.
Quick Fix for Chlorine: Shower Filter
At 1.5 mg/L chlorine, many Keene residents notice dry skin, brittle hair, and that "pool smell" in the shower. A shower filter installs in 5 minutes, no tools needed.
How to Test Your Water in Keene
City-wide data is a solid starting point, but your specific tap might differ based on plumbing age, distance from the treatment plant, or seasonal changes.
Free option: Request City of Keene Water's annual Consumer Confidence Report for official city-level data.
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About Keene's Water Supply
Water Utility: City of Keene Water
Water Source: Babbidge Reservoir (Surface Water)
Population Served: 30,000
Hardness: 15 PPM (0.9 grains per gallon)
Keene's drinking water comes from surface sources — Babbidge Reservoir. 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 30,000 residents.
Water quality can vary by neighborhood and season. For your exact numbers, request City of Keene 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 City of Keene Water in Keene, NH, including ZIP codes:
01337, 01360, 01368, 01378, 01475, 03280, 03431, 03435, 03440, 03441, 03442, 03443, 03444, 03445, 03446, 03447, 03448, 03449, 03450, 03451, 03452, 03455, 03456, 03457, 03458, 03461, 03462, 03464, 03465, 03466, 03467, 03468, 03469, 03470, 03601, 03602, 03603, 03604, 03605, 03607, 03608, 03609, 03743, 03752, 03754, 03773, 05101, 05141, 05143, 05146, 05150, 05154, 05156, 05158, 05159, 05301, 05302, 05303, 05304, 05341, 05342, 05343, 05344, 05345, 05346, 05351, 05353, 05354, 05355, 05356, 05357, 05358, 05359, 05360, 05362, 05363
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Compare Keene to Other New Hampshire Cities
Frequently Asked Questions About Keene Water
Is Keene tap water safe to drink?
Where does Keene's water come from?
Do I need a water softener in Keene?
What are disinfection byproducts in Keene's water?
Is chromium-6 in Keene's water?
Why does Keene water taste like chlorine?
Can I drink Keene tap water straight from the faucet?
How does Keene compare to the New Hampshire average?
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 Keene Homeowners Actually Buy
Common purchases for homes with 15 PPM water.
Affiliate disclosure: we may earn a commission. Selection based on Keene's water data.