WaterVerge

Is Silver Bay, MN Tap Water Safe to Drink?

Graded A-, with 1 unresolved violation on record. See what was cited — and what it means for your tap. What to do next ↓

2K residents served 1 water system PWSID: MN1380003
Overall Score
88.8 / 100
Violations
1 active
Last Updated
May 2026
Source
Surface water
#254 of 466 in Minnesota Top 21% nationally
Local Government
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
A-GRADE
Water Quality Grade
88.8/100
waterverge.com
A- 88.8/100

Silver Bay, MN — Water Quality Report

Silver Bay's drinking water received a grade of A- (88.8 out of 100), indicating good water quality. The city's 1 water system serves approximately 1,826 residents using surface water.

Lead levels were measured at 0.0 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 4 violations on record, including 0 health-based violations. 1 remains unresolved.

Data last updated: May 2026 · Source: EPA SDWIS, UCMR 5
Analysis

What to know about Silver Bay's water

Silver Bay ranks #254 out of 466 cities in Minnesota for water quality, placing it below average in the state.

The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.

As a small community water system, Silver Bay may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

Quality Breakdown

Water quality score

See methodology →
88.8 out of 100 Grade A-
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
42.8/45
A
Historical violation record including health-based and monitoring violations.
Lead & Copper
20/20
A
Lead at 0.0 ppb (90th percentile).
Contaminants
17/20
B
PFAS + legacy contaminant analysis.
Compliance
5/10
D
Monitoring and reporting compliance with EPA regulations.
Source Risk
4/5
B
Water source: Surface water.
Water Safety

Is Silver Bay, MN water safe to drink?

Use Caution

Silver Bay's tap water meets most EPA standards but has areas that warrant attention. With a grade of A- (88.8/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 1,826 residents using surface water (rivers, lakes, or reservoirs).

1
Active Violations
0.0 ppb
Lead (90th %ile)
10 events
Disaster History

Recent water quality updates for Silver Bay

A timeline of significant water quality events, violations, and data updates.

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Silver Bay's water quality assessment. Grade: A- (88.8/100).

Violation
1 drinking water violation recorded

Contaminants: Interim Enhanced Surface Water Treatment Rule.

Disaster
SEVERE STORMS AND FLOODING

Federal disaster declaration (FEMA DR-4797). Flood event — may have impacted local water infrastructure.

Disaster
SEVERE STORMS AND FLOODING

Federal disaster declaration (FEMA DR-4722). Flood event — may have impacted local water infrastructure.

Violation
1 drinking water violation recorded

Contaminants: Chlorine.

Violation
1 drinking water violation recorded

Contaminants: Lead and Copper Rule.

Key contaminant findings

Based on the most recent EPA sampling data for Silver Bay's water supply.

Lead Within Limits
Detected: 0.0 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Violation history

Silver Bay's water system has 4 total violations on record, including 0 health-based violations. 1 remain unresolved. 3 violations were issued in the last 5 years.

MR
Most recent violations:
Mar 2025 Interim Enhanced Surface Water Treatment Rule Resolved
Apr 2021 Chlorine Resolved
Jan 2021 Lead and Copper Rule Open
Aug 1997 Coliform (TCR) Resolved

Flood & environmental risk

Lake County has experienced 10 federally declared disasters since 2019. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.

SEVERE STORMS AND FLOODING
Flood FEMA DR-4797
SEVERE STORMS AND FLOODING
Flood FEMA DR-4722
SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA DR-4659

Where does Silver Bay's water come from?

Silver Bay's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 1,826 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment.

What Silver Bay residents can do

Request your utility's CCR

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.

Monitor alerts during storms

Silver Bay'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.

Contaminant Alerts

Top contaminants to know

View all ↓
Lead (90th percentile)
Inorganic / Heavy Metal
Safe
0.0 ppb
EPA Action Level: 15 ppb · 0% of limit
Safe Level
Compliance Record

Violation summary

4
Total violations
0
Health-based
1
Active / unresolved
Mar 2025
Most recent violation
Compliance Record

Violations & advisories

4 Total
1 Active
0 Health-based
3 Resolved
Violations by category
Interim and Long Term 1 Enhanced Surface Water Treatment Rule
1
Stage 1 Disinfectants and Disinfection Byproducts Rule
1
Lead and Copper Rule
1
Total Coliform Rule
1
Jan 2021 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Mar 2025 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring & Reporting
Monitoring & Reporting Resolved Mar 2025
Apr 2021 Resolved
Chlorine
Monitoring & Reporting
Monitoring & Reporting Resolved Jun 2021
Aug 1997 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Aug 1997
Environmental Risk

Flood & disaster history

10
Declared disasters
Jun 2024
Most recent
Flood
Most common type

Lake County has experienced 10 federally declared disasters since 2019. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.

Jun 2024
SEVERE STORMS AND FLOODING
Flood FEMA #4797
Jul 2023
SEVERE STORMS AND FLOODING
Flood FEMA #4722
Jul 2022
SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA #4659
Jul 2022
SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA #4659
Jul 2022
SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA #4659
Jul 2022
SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA #4659

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 0.0 15 ppb Inorganic Safe
Data source: EPA SDWIS, UCMR 5, local utility CCR.

Lead level (90th percentile)

Latest reading: 0.0 ppb (2023)

EPA action level: 15 ppb

Infrastructure

Water source & infrastructure

Primary Source
Surface Water
Operator
Local Government
Population Served
1,826
Water Systems
1
Water Source

Where Silver Bay's water comes from

Surface Water

Silver Bay's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.

Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.

These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.

The system is operated by local government ownership and serves approximately 1,826 people through 1 water system.

Infrastructure

Water systems serving Silver Bay

System Name PWSID Population Source
Silver Bay MN1380003 1,826 SW
Regional Comparison

How Silver Bay compares

Full Minnesota rankings →

Silver Bay's score of 88.8/100 is above the average of 82/100 among major Minnesota cities. It outscores 8 of 10 nearby cities.

Silver Bay (this city)
88.8
St. Paul
73.3
Rochester
69.7
Minnesota avg
82
City Profile

About Silver Bay, MN

Wikipedia →

Silver Bay is a city in Lake County, Minnesota, United States. The population was 1,857 at the time of the 2020 census. It is the largest population center in a natural tourism area which includes Tettegouche State Park and the Split Rock Lighthouse. It is a port along Lake Superior for iron ore, but does not have taconite mining facilities of its own, only a processing plant ran by Cleveland-Cliffs.

Economic Profile
$65,882
Median Income
$130,756
Median Home Value
$941/mo
Median Rent
3.9%
Unemployment
Community
48.7
Median Age
86
People / sq mi
25.9%
College Educated
81.6%
Homeownership
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Frequently asked questions

Is Silver Bay, MN tap water safe to drink?

Silver Bay's water quality earned a grade of A- (88.8/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #254 out of 466 cities tested in Minnesota.

What contaminants are in Silver Bay's water?

Lead was measured at 0.0 ppb (90th percentile). 4 violations are on record.

How is Silver Bay'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 Silver Bay?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Silver Bay's water come from?

Silver Bay's water is sourced from Surface water. The city has 1 water system serving approximately 1,826 residents.

How does Silver Bay's water compare to other cities?

Silver Bay ranks #254 out of 466 cities in Minnesota (better than 45% of state cities) and #3244 out of 15744 cities nationally (79th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Silver Bay's small water system affect quality?

Silver Bay's system serves approximately 1,826 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 4 violations on record.