Is Princeton, NC Tap Water Safe to Drink?
Graded F — but Lead was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
38.2/100
waterverge.com Princeton, NC — Water Quality Report
Princeton's drinking water received a grade of F (38.2 out of 100), indicating failing water quality. The city's 1 water system serves approximately 1,326 residents using purchased surface water.
Lead levels were measured at 16.0 ppb (90th percentile), which exceeds the EPA action level of 15 ppb. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 61 violations on record, including 13 health-based violations. 26 remain unresolved.
What to know about Princeton's water
Princeton ranks #395 out of 417 cities in North Carolina for water quality, placing it among the lowest-rated 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.
Lead levels exceed the EPA action level of 15 ppb, which typically indicates aging lead service lines or lead solder in the distribution system. An NSF 53-certified filter is strongly recommended for drinking and cooking water.
As a small community water system, Princeton may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 16 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Princeton, NC water safe to drink?
Princeton's drinking water has significant quality concerns based on EPA testing data. With a grade of F (38.2/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,326 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Princeton
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Princeton's water quality assessment. Grade: F (38.2/100).
Contaminants: Lead and Copper Rule, Chlorine, Revised Total Coliform Rule.
Contaminants: Revised Total Coliform Rule.
Contaminants: Public Notice.
Federal disaster declaration (FEMA DR-3586). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3534). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Princeton's water supply.
Exceeds EPA action level. Lead service line replacement and point-of-use filtration recommended.
Violation history
Princeton's water system has 61 total violations on record, including 13 health-based violations. 26 remain unresolved. 16 violations were issued in the last 5 years.
Flood & environmental risk
Johnston County has experienced 10 federally declared disasters since 2005. 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 Neuse River, Little River.
Where does Princeton's water come from?
Princeton's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 1,326 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Neuse River (river), Little River (river).
What Princeton residents can do
Recommended: NSF 53-certified pitcher or under-sink filter. This addresses the specific contaminants found in Princeton'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.
Run cold water for 30 seconds before drinking, especially in the morning. Lead and copper leach from household plumbing when water sits in pipes.
Princeton'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
Top industrial polluters within 10 miles of Princeton
Industrial polluters nearby
Reported releases to surface water by facilities near Princeton, ranked by pounds discharged annually.
Total reported releases to surface water: 0 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
DUKE ENERGY PROGRESS LLC - H F LEE ENERGY COMPLEX GOLDSBORO, NC27530 | Lead And Lead Compounds | 0 | 7.5 mi |
CONESTOGA KENLY PLANT & SPRAYROOM KENLY, NC27542 | — | — | 7.7 mi |
LFC2 SELMA, NC27576 | — | — | 9.1 mi |
ZEHRCO-GIANCOLA COMPOSITES INC. SMITHFIELD, NC27577 | — | — | 8.5 mi |
BLANCHARD TERMINAL CO - SELMA BUFFALO NC TERMINAL SELMA, NC27576 | — | — | 9.8 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D3 — extreme droughtJohnston County is currently in D3 (extreme 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
Johnston County has experienced 10 federally declared disasters since 2005. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Princeton's water supply, we recommend the following filter types.
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. | 16.0 | 15 | ppb | Inorganic | Over Limit |
Lead level trend (90th percentile)
See how Princeton compares by contaminant
Explore where Princeton ranks among all North Carolina cities for specific contaminants.
Water source & infrastructure
Where Princeton's water comes from
Princeton'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 1,326 people through 1 water system.
Water bodies near Princeton
Princeton is located near 2 notable water bodies. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Princeton
| System Name | PWSID | Population | Source |
|---|---|---|---|
| PRINCETON, TOWN OF | NC0351050 | 1,326 | SWP |
How Princeton compares
Full North Carolina rankings →Princeton's score of 38.2/100 is on par with the average of 43/100 among major North Carolina cities. It outscores 7 of 10 nearby cities.
Nearby cities
View North Carolina rankings →About Princeton, NC
Learn more about your water
Guides and resources related to Princeton's water quality findings.
Explore water quality across Johnston
Frequently asked questions
Is Princeton, NC tap water safe to drink?
Princeton's water quality earned a grade of F (38.2/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #395 out of 417 cities tested in North Carolina.
What contaminants are in Princeton's water?
Lead was measured at 16.0 ppb (90th percentile). 61 violations are on record.
How is Princeton'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 Princeton?
Yes — lead levels exceed the EPA action level of 15 ppb. We recommend an NSF 53-certified filter or reverse osmosis system. Based on current data, basic filtration should suffice for additional peace of mind.
Where does Princeton's water come from?
Princeton's water is sourced from Purchased surface water. The city has 1 water system serving approximately 1,326 residents.
What health violations has Princeton's water system had?
Princeton has 13 health-based violations on record. The most recent violation was recorded in October 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 26 violations remain unresolved.
How does Princeton's water compare to other cities?
Princeton ranks #395 out of 417 cities in North Carolina (better than 5% of state cities) and #15359 out of 15744 cities nationally (2th percentile). The grade of F reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Princeton's small water system affect quality?
Princeton's system serves approximately 1,326 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 61 violations on record.