Is North Warren, PA Tap Water Safe to Drink?
Graded B- — but Lead was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
72.6/100
waterverge.com North Warren, PA — Water Quality Report
North Warren's drinking water received a grade of B- (72.6 out of 100), indicating fair water quality. The city's 1 water system serves approximately 721 residents using groundwater.
Lead levels were measured at 23.7 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 58 violations on record, including 1 health-based violation. 2 remain unresolved.
What to know about North Warren's water
North Warren ranks #167 out of 560 cities in Pennsylvania for water quality, placing it mid-range in the state.
North Warren relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
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, North Warren 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 North Warren, PA water safe to drink?
North Warren's tap water meets most EPA standards but has areas that warrant attention. With a grade of B- (72.6/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 721 residents using groundwater (wells).
Recent water quality updates for North Warren
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into North Warren's water quality assessment. Grade: B- (72.6/100).
Contaminants: Groundwater Rule.
Contaminants: Groundwater Rule.
Contaminants: Consumer Confidence Rule.
Federal disaster declaration (FEMA DR-3356). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3235). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for North Warren's water supply.
Exceeds EPA action level. Lead service line replacement and point-of-use filtration recommended.
Violation history
North Warren's water system has 58 total violations on record, including 1 health-based violation. 2 remain unresolved. 16 violations were issued in the last 5 years.
Flood & environmental risk
Warren County has experienced 5 federally declared disasters since 1972. 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 Allegheny Reservoir Near Warren, Allegheny River Below Kinzua Dam At Big Bend, Allegheny River At Kinzua Dam, Conewango Creek At Russell, Allegheny River Bl Conewango Creek At Warren.
Where does North Warren's water come from?
North Warren's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 721 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Allegheny Reservoir Near Warren (lake), Allegheny River Below Kinzua Dam At Big Bend (river), Allegheny River At Kinzua Dam (river), Conewango Creek At Russell (river), Allegheny River Bl Conewango Creek At Warren (river).
What North Warren residents can do
Recommended: NSF 53-certified pitcher or under-sink filter. This addresses the specific contaminants found in North Warren'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.
North Warren'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 North Warren
Industrial polluters nearby
Reported releases to surface water by facilities near North Warren, ranked by pounds discharged annually.
Total reported releases to surface water: 3,485 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
UNITED REFINING CO WARREN, PA16365 | Ammonia | 3,477 | 4.3 mi |
ELLWOOD NATIONAL FORGE CO IRVINE, PA16329 | Manganese | 8 | 6.2 mi |
GG GREENE ENTERPRISES INC WARREN, PA16365 | — | — | 5.2 mi |
OSRAM SYLVANIA INC WARREN, PA16365 | — | — | 3.7 mi |
SUPERIOR TIRE & RUBBER CORP. WARREN, PA16365 | — | — | 3.1 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Warren County has experienced 5 federally declared disasters since 1972. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in North Warren'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. | 23.7 | 15 | ppb | Inorganic | Over Limit |
Lead level trend (90th percentile)
See how North Warren compares by contaminant
Explore where North Warren ranks among all Pennsylvania cities for specific contaminants.
Water source & infrastructure
Where North Warren's water comes from
North Warren's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by state ownership and serves approximately 721 people through 1 water system.
Water bodies near North Warren
North Warren is located near 5 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving North Warren
| System Name | PWSID | Population | Source |
|---|---|---|---|
| WARREN STATE HOSPITAL | PA6620034 | 721 | GW |
How North Warren compares
Full Pennsylvania rankings →North Warren's score of 72.6/100 is above the average of 49/100 among major Pennsylvania cities. It outscores 8 of 10 nearby cities.
Nearby cities
View Pennsylvania rankings →About North Warren, PA
Wikipedia →North Warren is a census-designated place located along the Conewango Creek in Conewango Township, Warren County in the state of Pennsylvania, United States. The community is located to the north of the city of Warren. As of the 2010 census the population was 1,934 residents. A notable institution located in North Warren is the Warren State Hospital.
Learn more about your water
Guides and resources related to North Warren's water quality findings.
Explore water quality across Warren
Frequently asked questions
Is North Warren, PA tap water safe to drink?
North Warren's water quality earned a grade of B- (72.6/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #167 out of 560 cities tested in Pennsylvania.
What contaminants are in North Warren's water?
Lead was measured at 23.7 ppb (90th percentile). 58 violations are on record.
How is North Warren'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 North Warren?
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 North Warren's water come from?
North Warren's water is sourced from Groundwater. The city has 1 water system serving approximately 721 residents.
What health violations has North Warren's water system had?
North Warren has 1 health-based violation on record. The most recent violation was recorded in February 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 2 violations remain unresolved.
Is North Warren's groundwater at risk of contamination?
North Warren uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 58 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does North Warren's water compare to other cities?
North Warren ranks #167 out of 560 cities in Pennsylvania (better than 70% of state cities) and #10282 out of 15744 cities nationally (35th percentile). The grade of B- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does North Warren's small water system affect quality?
North Warren's system serves approximately 721 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 58 violations on record.