A90/100
Sandstone — Water Quality Report 2026
Serving 1,425 people · Minnesota
Water Source
Groundwater
County
—
System ID
MN1580010
Violations
2
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.90 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1999.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About Sandstone
Is Sandstone water safe to drink?
Sandstone water receives a grade of A (90/100), which is considered excellent. Out of 2 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has Sandstone detected?
2 contaminants were tested in Sandstone's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does Sandstone have any EPA violations?
Yes, Sandstone has 2 EPA violation(s) on record, with the most recent in 1999. Violation types include MR.
How many people does Sandstone serve?
Sandstone serves approximately 1,425 people, Minnesota.
What type of water does Sandstone provide?
Sandstone sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MN1580010.
How does Sandstone compare to other utilities in Minnesota?
Sandstone scores 90/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Minnesota state page for a full comparison of water systems.