Twin Lake, MI Water Safety: 88/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
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: 2026-06-03
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.
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 recorded across any ZIP codes in Twin Lake — an excellent indicator of water quality.
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