Is Long Island City, NY Tap Water Safe to Drink?
Yes, Long Island City tap water is safe to drink. Hardness is low at 25 PPM, and no contaminants exceed health guidelines. Most homes here don't need treatment.
Hardness Scale: Where Long Island City Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How Long Island City Compares
Long Island City's water is 82% softer than the national average of 138 PPM - ranking in the bottom 88% for hardness nationwide. Most homes here do not need a softener. Within New York, it ranks #37 of 37 cities (60% below the state average of 62 PPM). Among major US cities (500k+), Long Island City ranks #92 of 100 for hardness.
What Long Island City's Water Means for Your Home
Hardness: 25 PPM - Low Concern
Long Island City's water is slightly hard at 25 PPM. Most households won't notice any issues at this level. Scale buildup is minimal, and a water softener would be overkill. Long Island City is softer than 88% 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 10 ppb, Long Island City'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
Long Island City's surface water supply requires heavy chlorination to stay safe — but that creates a tradeoff. The treatment process generates disinfection byproducts: TTHMs at 38.8 ppb (49% of the legal limit, but 259x the EWG guideline) and HAA5 at 38.2 ppb (64% of the legal limit, but 382x 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 0.0413 ppb, which is 2.1x 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) | 25 PPM | < 60 PPM | No federal limit | ✓ OK |
| Total Dissolved Solids | 45 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 | 10 ppb | 0 ppb (no safe level) | 15 ppb (10 ppb in 2027) | ⚠ Elevated |
| Chlorine / Chloramine | 1.5 mg/L | Taste threshold ~1.0 | 4.0 mg/L | ✓ Normal |
| Nitrate | 0.161 mg/L | 5 mg/L | 10 mg/L | ✓ OK |
Recommendations for Long Island City Homes
Quick Fix for Chlorine: Shower Filter
At 1.5 mg/L chlorine, many Long Island City 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 Long Island City
Lead enters water from your home's plumbing, not the treatment plant — so Long Island City's city-wide average of 10 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 NYC DEP's annual Consumer Confidence Report for official city-level data.
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About Long Island City's Water Supply
Water Utility: NYC DEP
Water Source: Surface water (reservoirs) (Surface Water)
Population Served: 8,271,000
Hardness: 25 PPM (1.5 grains per gallon)
Long Island City's drinking water comes from surface sources — Surface water (reservoirs). 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 8.3 million residents.
Water quality can vary by neighborhood and season. For your exact numbers, request NYC DEP'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 NYC DEP in Long Island City, NY, including ZIP codes:
10451, 10452, 10454, 10455, 10456, 10459, 10474, 11101, 11102, 11103, 11104, 11105, 11106, 11109, 11120, 11351, 11354, 11355, 11356, 11357, 11358, 11365, 11366, 11367, 11368, 11369, 11370, 11371, 11372, 11373, 11374, 11375, 11377, 11378, 11379, 11380, 11385, 11386, 11414, 11415, 11416, 11417, 11418, 11419, 11420, 11421, 11431, 11432, 11435
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Compare Long Island City to Other New York Cities
Frequently Asked Questions About Long Island City Water
Is Long Island City tap water safe to drink?
Where does Long Island City's water come from?
Do I need a water softener in Long Island City?
What water filter is best for Long Island City?
Is Long Island City water safe for babies and infants?
What are disinfection byproducts in Long Island City's water?
Is chromium-6 in Long Island City's water?
Why does Long Island City water taste like chlorine?
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 Long Island City Homeowners Actually Buy
Common purchases for homes with 25 PPM water.
Affiliate disclosure: we may earn a commission. Selection based on Long Island City's water data.