Grasston, MN Water Safety: 75/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Residents of Grasston generally live with tap water that beats the MN safety average on key EPA compliance metrics.
How Grasston Compares
Data: EPA SDWIS Last verified: 2026-06-03
Grasston Water: The Quick Version
- Homes built before 1986: 64% — older plumbing may contain lead solder.
- Estimated remediation: $1,600 per household.
- CDC health risk index: 14.65 — above typical levels.
Water Systems Serving Grasston
Across most of Grasston, MN, residential water comes from a single utility. That provider sets rates, manages infrastructure maintenance, and files compliance reports with the EPA on behalf of the households it serves. Federal tracking data shows 1 system on record, but one carries the bulk of the service load.
Overview
We track water quality and home safety data for 1 ZIP code in Grasston, Minnesota, covering 1 community water system serving approximately 1,425 people.
No EPA violations recorded across any ZIP codes in Grasston — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Grasston: B (75/100)
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
Grasston water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Grasston
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate 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 |
|---|---|---|---|
| 55030 | B | Riverside Seniors Community | 25 |
All ZIP Codes in Grasston
- 55030 [B]
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.
CDC Health Data for Grasston
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
How Old Is Grasston's Housing Stock?
With 64% 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
Viewed through the lens of construction era, Grasston is predominantly an older city — a median build year of 1974 puts most of the residential inventory in the range where pre-1986 plumbing materials were the standard.
Over half of homes in Grasston 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.
Grasston: Remediation Cost in Perspective
How much of a Grasston home's value does documented remediation represent? A small fraction — the equity share here is in the low tier, and from a household financial perspective, most property owners are considering a commitment that fits comfortably within standard planning rather than a decision that rises to the level of a material budget event or significant equity consideration.
Remediation costs in Grasston are relatively low compared to home values. The $800–$2,600 estimated range is a small fraction of median property value. Home values are 10% below the Minnesota average.
Protecting Children from Lead in Grasston
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.
Pulling a tap sample fills the gap that utility data cannot close, particularly here where 64% of housing dates from the pre-rule era and citywide monitoring sits at or above the regulatory mark in Grasston.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Grasston
FEMA data shows 100% of Grasston's ZIP codes mapped into designated flood zones, paired with an NFIP record of 10 claims. That footprint places local flood exposure in the range where it warrants attention without rising to high-severity planning territory.
Grasston has a moderate flood history with 10 FEMA claims averaging $1,177 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,600</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Grasston, MN