Is Piscataway, NJ Tap Water Safe to Drink?
Piscataway tap water is legally compliant, but one contaminant exceeds health guidelines. Specifically: PFAS above EPA limits (PFOA: 5.17 ppt — limit is 4 ppt each). A point-of-use filter is recommended for drinking and cooking water.
Hardness Scale: Where Piscataway Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How Piscataway Compares
Piscataway's water is 60% softer than the national average of 138 PPM - ranking in the bottom 69% for hardness nationwide. Most homes here do not need a softener. Within New Jersey, it ranks #7 of 22 cities (22% above the state average of 45 PPM). Among large cities (200k-500k), Piscataway ranks #112 of 165 for hardness.
What Piscataway's Water Means for Your Home
Hardness: 55 PPM - Low Concern
Piscataway's water is slightly hard at 55 PPM. Most households won't notice any issues at this level. Scale buildup is minimal, and a water softener would be overkill. 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. Piscataway has PFOA at 5.17 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
Piscataway's surface water supply requires heavy chlorination to stay safe — but that creates a tradeoff. The treatment process generates disinfection byproducts: TTHMs at 31.7 ppb (40% of the legal limit, but 211x the EWG guideline) and HAA5 at 19.4 ppb (32% of the legal limit, but 194x 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 0.104 ppb, which is 5.2x 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) | 55 PPM | < 60 PPM | No federal limit | ✓ OK |
| Total Dissolved Solids | 95 PPM | < 300 PPM | 500 PPM | ✓ OK |
| PFAS (total) | 20.34 ppt | — | No total limit | Detected |
| ↳ PFOA | 5.17 ppt | 0 ppt | 4 ppt (2024) | ⚠ Exceeds |
| ↳ 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 | 1.2 mg/L | Taste threshold ~1.0 | 4.0 mg/L | ✓ Normal |
| Nitrate | 2.24 mg/L | 5 mg/L | 10 mg/L | ✓ OK |
Recommended Filter for Piscataway
PFAS exceed EPA limits (PFOA: 5.17 ppt — limit: 4 ppt each). A certified filter reduces these contaminants effectively.
Quick Fix for Chlorine: Shower Filter
At 1.2 mg/L chlorine, many Piscataway 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 Piscataway
With PFAS at 20.34 ppt in Piscataway'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 Middlesex Water Company's annual Consumer Confidence Report for official city-level data.
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About Piscataway's Water Supply
Water Utility: Middlesex Water Company
Water Source: Raritan River + wells (Surface Water)
Population Served: 233,376
Hardness: 55 PPM (3.2 grains per gallon)
Piscataway's drinking water comes from surface sources — Raritan River + wells. 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 233,000 residents.
Water quality can vary by neighborhood and season. For your exact numbers, request Middlesex Water Company'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 Middlesex Water Company in Piscataway, NJ, including ZIP codes:
07023, 07059, 07060, 07062, 07063, 07069, 07080, 07921, 07922, 07938, 07939, 07978, 08805, 08807, 08812, 08833, 08835, 08836, 08846, 08854, 08855, 08869, 08870, 08876, 08880, 08888, 08889, 08890
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Compare Piscataway to Other New Jersey Cities
Frequently Asked Questions About Piscataway Water
Is Piscataway tap water safe to drink?
Where does Piscataway's water come from?
Do I need a water softener in Piscataway?
How do I remove PFAS from Piscataway tap water?
What water filter is best for Piscataway?
Is Piscataway water safe for babies and infants?
What are disinfection byproducts in Piscataway's water?
Is chromium-6 in Piscataway's water?
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 Piscataway Homeowners Actually Buy
Prioritized for contaminant reduction for homes with 55 PPM water and PFAS above EPA limits.
Affiliate disclosure: we may earn a commission. Selection based on Piscataway's water data.