Is Milnor, ND Tap Water Safe to Drink?
Graded B — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
78.2/100
waterverge.com Milnor, ND — Water Quality Report
Milnor's drinking water received a grade of B (78.2 out of 100), indicating good water quality. The city's 2 water systems serve approximately 763 residents using purchased ground water.
Lead levels were measured at 1.5 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 27 violations on record, including 14 health-based violations. 3 remain unresolved.
What to know about Milnor's water
Milnor ranks #91 out of 103 cities in North Dakota for water quality, placing it among the lowest-rated in the state.
Milnor purchases its water from a regional wholesaler, meaning quality depends on both the supplier's treatment and the local distribution system's condition.
As a small community water system, Milnor may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 7 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Milnor, ND water safe to drink?
Milnor's drinking water has significant quality concerns based on EPA testing data. With a grade of B (78.2/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 763 residents using groundwater (wells).
Recent water quality updates for Milnor
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Milnor's water quality assessment. Grade: B (78.2/100).
1 health-based. Contaminants: Arsenic.
1 health-based. Contaminants: Arsenic.
1 health-based. Contaminants: Arsenic.
Federal disaster declaration (FEMA DR-4717). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4553). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Milnor's water supply.
Well within EPA limits.
Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.
Violation history
Milnor's water system has 27 total violations on record, including 14 health-based violations. 3 remain unresolved. 7 violations were issued in the last 5 years.
Flood & environmental risk
Sargent County has experienced 10 federally declared disasters since 1998. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.
Where does Milnor's water come from?
Milnor's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 763 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Milnor residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Milnor'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.
Milnor'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
Flood & disaster history
Sargent County has experienced 10 federally declared disasters since 1998. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Milnor'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. | 1.5 | 15 | ppb | Inorganic | Safe |
| Copper (90th percentile) CopperInorganic A metal that enters drinking water mainly through corrosion of copper plumbing. Small amounts are essential for health, but excess levels are harmful. Health EffectsGastrointestinal distress (nausea, vomiting, diarrhea) at short-term high levels; liver and kidney damage from long-term exposure. EPA Limit1.3 mg/L action level Common SourcesCorrosion of copper household plumbing, erosion of natural deposits. | 1.76 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level trend (90th percentile)
See how Milnor compares by contaminant
Explore where Milnor ranks among all North Dakota cities for specific contaminants.
Water source & infrastructure
Where Milnor's water comes from
Milnor purchases its water supply from a regional wholesale provider rather than treating raw water directly.
Water quality depends on both the wholesaler's treatment standards and the condition of Milnor's local distribution pipes and storage facilities.
Purchased water systems are common in suburban areas and smaller communities that lack the infrastructure for independent treatment.
The system is operated by local government ownership and serves approximately 763 people through 2 water systems.
Water systems serving Milnor
| System Name | PWSID | Population | Source |
|---|---|---|---|
| MILNOR CITY OF | ND4101425 | 653 | GWP |
| SUNDALE HUTTERIAN ASSOCIATION | ND4101452 | 110 | GW |
How Milnor compares
Full North Dakota rankings →Milnor's score of 78.2/100 is on par with the average of 82/100 among major North Dakota cities. It outscores 2 of 10 nearby cities. 8 of 10 nearby cities score higher.
Nearby cities
View North Dakota rankings →About Milnor, ND
Learn more about your water
Guides and resources related to Milnor's water quality findings.
Explore water quality across Sargent
Frequently asked questions
Is Milnor, ND tap water safe to drink?
Milnor's water quality earned a grade of B (78.2/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #91 out of 103 cities tested in North Dakota.
What contaminants are in Milnor's water?
Lead was measured at 1.5 ppb (90th percentile). 27 violations are on record.
How is Milnor'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 Milnor?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Milnor's water come from?
Milnor's water is sourced from Purchased ground water. The city has 2 water systems serving approximately 763 residents.
What health violations has Milnor's water system had?
Milnor has 14 health-based violations on record. The most recent violation was recorded in July 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 3 violations remain unresolved.
Is Milnor's groundwater at risk of contamination?
Milnor 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 27 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 Milnor's water compare to other cities?
Milnor ranks #91 out of 103 cities in North Dakota (better than 12% of state cities) and #8771 out of 15744 cities nationally (44th percentile). The grade of B reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.