Is Lowell, MA Tap Water Safe to Drink?
Lowell tap water is legally compliant, but one contaminant exceeds health guidelines. Specifically: PFAS above EPA limits (PFOA: 4.6 ppt — limit is 4 ppt each). A point-of-use filter is recommended for drinking and cooking water.
Hardness Scale: Where Lowell Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How Lowell Compares
Lowell'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 Massachusetts, it ranks #5 of 21 cities (5% above the state average of 19 PPM). Among mid-size cities (100k-200k), Lowell ranks #174 of 189 for hardness.
What Lowell's Water Means for Your Home
Hardness: 20 PPM - Low Concern
Lowell'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. Lowell 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
Forever chemicals (PFAS) are worth watching here. Lowell has PFOA at 4.6 ppt, exceeding the EPA's 2024 limit of 4 ppt per compound. PFAS are synthetic compounds that accumulate in your body over time. A certified carbon filter or reverse osmosis system with NSF P473 certification is the most effective protection. See the regulatory timeline.
What's in the Treatment Process
Lowell's surface water supply requires heavy chlorination to stay safe — but that creates a tradeoff. The treatment process generates disinfection byproducts: TTHMs at 41.1 ppb (51% of the legal limit, but 274x the EWG guideline) and HAA5 at 15.4 ppb (26% of the legal limit, but 154x 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) | 20 PPM | < 60 PPM | No federal limit | ✓ OK |
| Total Dissolved Solids | 28 PPM | < 300 PPM | 500 PPM | ✓ OK |
| PFAS (total) | 12.5 ppt | — | No total limit | Detected |
| ↳ PFOA | 4.6 ppt | 0 ppt | 4 ppt (2024) | ⚠ Exceeds |
| ↳ PFOS | 0 ppt | 0 ppt | 4 ppt (2024) | ✓ OK |
| Lead | 1.1 ppb | 0 ppb (no safe level) | 15 ppb (10 ppb in 2027) | ✓ Low |
| Chlorine / Chloramine | 0.4 mg/L | Taste threshold ~1.0 | 4.0 mg/L | ✓ Normal |
| Nitrate | 0.261 mg/L | 5 mg/L | 10 mg/L | ✓ OK |
Recommended Filter for Lowell
PFAS exceed EPA limits (PFOA: 4.6 ppt — limit: 4 ppt each). A certified filter reduces these contaminants effectively.
How to Test Your Water in Lowell
With PFAS at 12.5 ppt in Lowell's supply, confirming your home's specific levels is especially important. PFAS vary by neighborhood and can concentrate differently depending on your position in the distribution system.
Free option: Request City of Lowell Water's annual Consumer Confidence Report for official city-level data.
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About Lowell's Water Supply
Water Utility: City of Lowell Water
Water Source: Merrimack River (Surface Water)
Population Served: 115,000
Hardness: 20 PPM (1.2 grains per gallon)
Lowell's drinking water comes from surface sources — Merrimack 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 115,000 residents.
Water quality can vary by neighborhood and season. For your exact numbers, request City of Lowell 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 Lowell Water in Lowell, MA, including ZIP codes:
01432, 01460, 01741, 01821, 01822, 01824, 01826, 01850, 01851, 01852, 01853, 01854, 01862, 01863, 01865, 01866, 01876, 01879, 01886, 01887
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Compare Lowell to Other Massachusetts Cities
Frequently Asked Questions About Lowell Water
Is Lowell tap water safe to drink?
Where does Lowell's water come from?
Do I need a water softener in Lowell?
How do I remove PFAS from Lowell tap water?
What water filter is best for Lowell?
Is Lowell water safe for babies and infants?
What are disinfection byproducts in Lowell's water?
Can I drink Lowell 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 Lowell Homeowners Actually Buy
Prioritized for contaminant reduction for homes with 20 PPM water and PFAS above EPA limits.
Affiliate disclosure: we may earn a commission. Selection based on Lowell's water data.