Grenora, ND: High Radon Risk — 66/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Safe water is the norm across most of Grenora, ND — but documented violations push the city to the middle safety tier.
How Grenora Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Grenora Water
- Average lead level: 0.0025 mg/L.
- Homes built before 1986: 83% — older plumbing may contain lead solder.
- Estimated remediation: $1,700 per household.
- CDC health risk index: 11.99.
Who Supplies Your Water in Grenora
Grenora, ND draws its residential water from 2 separate providers among the 2 federally tracked systems. Each operates independently, with its own infrastructure, rate structure, and compliance record.
Overview
We track water quality and home safety data for 1 ZIP code in Grenora, North Dakota (population ~555), covering 2 community water systems serving approximately 5,346 people region-wide.
No EPA violations recorded across any ZIP codes in Grenora — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Grenora: C (66/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Grenora water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0025 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 58845 | C | Northwest Rural Water District | 5,102 |
All ZIP Codes in Grenora
- 58845 [C]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Health Outcomes in Grenora
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Housing & Infrastructure in Grenora
With 83% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
What does a median build year of 1952 mean for water safety in Grenora? It means the majority of the city's residential plumbing was installed before 1986, when lead solder was federally banned, and a large share may predate 1970, when lead pipes were commonly used — making plumbing age a central variable in household-level lead risk across much of the city.
Over half of homes in Grenora were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Grenora Homeowners
Within the Grenora market, estimated remediation claims a small portion of typical property equity — the financial burden is proportionally low.
Remediation costs in Grenora are relatively low compared to home values. The $1,100–$2,300 estimated range is a small fraction of median property value. Home values are 4% above the North Dakota average.
Lead Exposure Risk for Children in Grenora
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Practically, the structural drivers in Grenora — 83% pre-rule stock and citywide monitoring at or beyond the regulatory benchmark — make an in-home draw the practical way to translate aggregate averages into the specific conditions at one address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Grenora
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 83% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Grenora, ND