Is Heppner, OR Tap Water Safe to Drink?
Graded B+, with 7 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
81.6/100
waterverge.com Heppner, OR — Water Quality Report
Heppner's drinking water received a grade of B+ (81.6 out of 100), indicating good water quality. The city's 1 water system serves approximately 1,187 residents using groundwater.
Lead levels were measured at 10.5 ppb (90th percentile), which is within EPA limits but above recommended levels. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 61 violations on record, including 17 health-based violations. 7 remain unresolved.
What to know about Heppner's water
Heppner ranks #44 out of 213 cities in Oregon for water quality, placing it above average in the state.
Heppner 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.
While lead levels are within EPA limits, they are above the recommended 5 ppb threshold that health organizations consider ideal. A point-of-use filter adds an extra layer of protection.
As a small community water system, Heppner may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Heppner, OR water safe to drink?
Heppner's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (81.6/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,187 residents using groundwater (wells).
Recent water quality updates for Heppner
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Heppner's water quality assessment. Grade: B+ (81.6/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: Revised Total Coliform Rule.
Contaminants: COLIPHAGE.
Federal disaster declaration (FEMA DR-3228). Coastal Storm event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-1099). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Heppner's water supply.
Within EPA limits but above the American Academy of Pediatrics recommended level of 1 ppb. An NSF 53-certified filter provides additional protection.
Violation history
Heppner's water system has 61 total violations on record, including 17 health-based violations. 7 remain unresolved. 1 violation was issued in the last 5 years.
Flood & environmental risk
Morrow County has experienced 3 federally declared disasters since 1964. 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 Willow Creek, Balm Fork, Willow Creek Lake.
Where does Heppner's water come from?
Heppner's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,187 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Willow Creek (river), Balm Fork (river), Willow Creek Lake (lake).
What Heppner residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Heppner'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.
Heppner'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
D2 — severe droughtMorrow County is currently in D2 (severe 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
Morrow County has experienced 3 federally declared disasters since 1964. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Heppner'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. | 10.5 | 15 | ppb | Inorganic | Near Limit |
Lead level trend (90th percentile)
See how Heppner compares by contaminant
Explore where Heppner ranks among all Oregon cities for specific contaminants.
Water source & infrastructure
Where Heppner's water comes from
Heppner'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 local government ownership and serves approximately 1,187 people through 1 water system.
Water bodies near Heppner
Heppner is located near 3 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Heppner
| System Name | PWSID | Population | Source |
|---|---|---|---|
| HEPPNER, CITY OF | OR4100369 | 1,187 | GW |
How Heppner compares
Full Oregon rankings →Heppner's score of 81.6/100 is above the average of 42/100 among major Oregon cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Oregon rankings →About Heppner, OR
Wikipedia →Heppner is a city in and the county seat of Morrow County, Oregon, United States. As of the 2020 census, the population was 1,187, down from 1,291 in 2010. Heppner is part of the Pendleton-Hermiston Micropolitan Area. It is named after Henry Heppner, a prominent Jewish-American businessman.
Learn more about your water
Guides and resources related to Heppner's water quality findings.
Explore water quality across Morrow
Frequently asked questions
Is Heppner, OR tap water safe to drink?
Heppner's water quality earned a grade of B+ (81.6/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #44 out of 213 cities tested in Oregon.
What contaminants are in Heppner's water?
Lead was measured at 10.5 ppb (90th percentile). 61 violations are on record.
How is Heppner'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 Heppner?
While lead levels are within EPA limits, a filter adds extra protection. Based on current data, basic filtration should suffice for additional peace of mind.
Where does Heppner's water come from?
Heppner's water is sourced from Groundwater. The city has 1 water system serving approximately 1,187 residents.
What health violations has Heppner's water system had?
Heppner has 17 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. 7 violations remain unresolved.
Is Heppner's groundwater at risk of contamination?
Heppner 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 61 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 Heppner's water compare to other cities?
Heppner ranks #44 out of 213 cities in Oregon (better than 79% of state cities) and #7404 out of 15744 cities nationally (53th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Heppner's small water system affect quality?
Heppner's system serves approximately 1,187 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.