Twin Lake, MI Water Safety: 88/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-07-19
ZipCheckup grade for Twin Lake: A.
No federal data flags a major home-safety concern for this ZIP.
How does Twin Lake tap water hold up under EPA scrutiny? Above average for MI - documented violations are uncommon and the safety grade reflects a clean overall record.
How Twin Lake Compares
Data: EPA SDWIS Last verified: 2026-07-19
Twin Lake Water: The Quick Version
- Homes built before 1986: 43% - older plumbing may contain lead solder.
- CDC health risk index: 14.81 - above typical levels.
Water Systems Serving Twin Lake
Water delivery in Twin Lake, MI is handled by 3 utilities rather than a single system - drawn from 3 providers in federal records, each filing its own compliance reports and setting its own rates.
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Overview
We track water quality and home safety data for 1 ZIP code in Twin Lake, Michigan, covering 3 community water systems serving approximately 11,263 people.
No EPA violations are recorded for the tracked water systems in Twin Lake as of the latest reporting period.
Home Safety Score
Average Home Safety Score for Twin Lake: A (88/100)
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
Twin Lake water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Twin Lake
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 49457 | A | Timberline Estates | 755 |
All ZIP Codes in Twin Lake
- 49457 [A]
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 Twin Lake
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 Twin Lake's Housing Stock?
With 43% 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
Pre-1986 construction carries elevated plumbing-era lead risk because lead solder was widely used before that federal ban. In Twin Lake, the median build year of 1998 indicates a housing stock where that older fraction represents a significant share of the residential inventory.
Most homes in Twin Lake were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Protecting Children from Lead in Twin Lake
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.
When older housing represents 43% of the local inventory or aggregate readings approach the federal action level, an in-home check becomes the standard way to translate citywide averages into the specific reality of an individual Twin Lake address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Twin Lake, MI