Is Hopewell Boro-1105, NJ Tap Water Safe to Drink?
Graded C, with 8 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
64.7/100
waterverge.com Hopewell Boro-1105, NJ — Water Quality Report
Hopewell Boro-1105's drinking water received a grade of C (64.7 out of 100), indicating fair water quality. The city's 1 water system serves approximately 2,035 residents using purchased surface water.
Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 335 violations on record, including 3 health-based violations. 8 remain unresolved.
What to know about Hopewell Boro-1105's water
Hopewell Boro-1105 ranks #315 out of 435 cities in New Jersey for water quality, placing it below average in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Hopewell Boro-1105 may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 14 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Hopewell Boro-1105, NJ water safe to drink?
Hopewell Boro-1105's drinking water has significant quality concerns based on EPA testing data. With a grade of C (64.7/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 2,035 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Hopewell Boro-1105
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Hopewell Boro-1105's water quality assessment. Grade: C (64.7/100).
Contaminants: TTHM.
Contaminants: Lead and Copper Rule.
1 health-based. Contaminants: Lead and Copper Rule.
Federal disaster declaration (FEMA DR-4614). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3573). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Hopewell Boro-1105's water supply.
Well within EPA limits.
Violation history
Hopewell Boro-1105's water system has 335 total violations on record, including 3 health-based violations. 8 remain unresolved. 14 violations were issued in the last 5 years.
Flood & environmental risk
Mercer County has experienced 10 federally declared disasters since 1975. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Sb Raritan R At Black Point Rd At Neshanic Sta, Neshanic River At Reaville, Stony Brook At Princeton, Millstone River At Carnegie Lake At Princeton, Pike Run At Belle Mead.
Where does Hopewell Boro-1105's water come from?
Hopewell Boro-1105's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 2,035 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Sb Raritan R At Black Point Rd At Neshanic Sta (river), Neshanic River At Reaville (river), Stony Brook At Princeton (river), Millstone River At Carnegie Lake At Princeton (river), Pike Run At Belle Mead (river).
What Hopewell Boro-1105 residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Hopewell Boro-1105's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Hopewell Boro-1105's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Drought conditions
D1 — moderate droughtMercer County is currently in D1 (moderate drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Mercer County has experienced 10 federally declared disasters since 1975. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Hopewell Boro-1105 compares by contaminant
Explore where Hopewell Boro-1105 ranks among all New Jersey cities for specific contaminants.
Water source & infrastructure
Where Hopewell Boro-1105's water comes from
Hopewell Boro-1105's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by local government ownership and serves approximately 2,035 people through 1 water system.
Water bodies near Hopewell Boro-1105
Hopewell Boro-1105 is located near 5 notable water bodies. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Hopewell Boro-1105
| System Name | PWSID | Population | Source |
|---|---|---|---|
| HOPEWELL BORO W DEPT | NJ1105001 | 2,035 | SWP |
How Hopewell Boro-1105 compares
Full New Jersey rankings →Hopewell Boro-1105's score of 64.7/100 is on par with the average of 63/100 among major New Jersey cities. It outscores 4 of 10 nearby cities. 6 of 10 nearby cities score higher.
Nearby cities
View New Jersey rankings →About Hopewell Boro-1105, NJ
Wikipedia →Hopewell is a borough in Mercer County, in the U.S. state of New Jersey. Centrally located within the Raritan Valley region, this historical settlement is an exurban commuter suburb of New York City in the New York metropolitan area as defined by the United States Census Bureau. As of the 2020 United States census, the borough's population was 1,918, a decrease of 4 (−0.2%) from the 2010 census count of 1,922, which in turn had reflected a decline of 113 (−5.6%) from the 2,035 counted at the 2000 census.
Learn more about your water
Guides and resources related to Hopewell Boro-1105's water quality findings.
Explore water quality across Mercer
Frequently asked questions
Is Hopewell Boro-1105, NJ tap water safe to drink?
Hopewell Boro-1105's water quality earned a grade of C (64.7/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #315 out of 435 cities tested in New Jersey.
What contaminants are in Hopewell Boro-1105's water?
Lead was measured at 0.0 ppb (90th percentile). 335 violations are on record.
How is Hopewell Boro-1105's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Hopewell Boro-1105?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Hopewell Boro-1105's water come from?
Hopewell Boro-1105's water is sourced from Purchased surface water. The city has 1 water system serving approximately 2,035 residents.
What health violations has Hopewell Boro-1105's water system had?
Hopewell Boro-1105 has 3 health-based violations on record. The most recent violation was recorded in November 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 8 violations remain unresolved.
How does Hopewell Boro-1105's water compare to other cities?
Hopewell Boro-1105 ranks #315 out of 435 cities in New Jersey (better than 28% of state cities) and #11631 out of 15744 cities nationally (26th percentile). The grade of C reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Hopewell Boro-1105's small water system affect quality?
Hopewell Boro-1105's system serves approximately 2,035 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 335 violations on record.