Flat Rock, IN: High Radon Risk — 45/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Across water systems in Flat Rock, EPA data shows a below-average compliance pattern for IN — health-based violations are on file in several areas, and checking the specific system serving your address is a practical first step for concerned residents.
How Flat Rock Compares
Data: EPA SDWIS Last verified: 2026-06-03
Flat Rock Water: The Quick Version
- Homes built before 1986: 69% — older plumbing may contain lead solder.
- Estimated remediation: $2,400 per household.
- CDC health risk index: 15.05 — above typical levels.
Water Systems Serving Flat Rock
A single dominant system supplies most of Flat Rock, IN. That utility controls infrastructure decisions, rate structures, and EPA compliance reporting for most residential addresses served across those 1 tracked system.
Overview
We track water quality and home safety data for 1 ZIP code in Flat Rock, Indiana, covering 1 community water system serving approximately 1,571 people.
No EPA violations recorded across any ZIP codes in Flat Rock — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Flat Rock: D (45/100)
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
Flat Rock water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Flat Rock
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High 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 |
|---|---|---|---|
| 47234 | D | HOPE WATER DEPARTMENT | 2,113 |
All ZIP Codes in Flat Rock
- 47234 [D]
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 Flat Rock
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 Flat Rock's Housing Stock?
With 69% 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
Heavily weighted toward older construction, Flat Rock's housing stock carries a median build year of 1954. That profile puts a majority of homes in the era when lead-soldered copper plumbing was standard practice.
Over half of homes in Flat Rock 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.
Flat Rock: Remediation Cost in Perspective
The equity impact of remediation in Flat Rock sits at a moderate level — real enough to plan for, within reach for most.
Remediation costs are moderate relative to home values in Flat Rock. The estimated $1,600–$3,300 range is manageable for most homeowners but still worth budgeting for. Home values are 0% above the Indiana average.
Protecting Children from Lead in Flat Rock
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 69% 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 Flat Rock address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Flat Rock
Over the multi-decade window covered by the National Flood Insurance Program, Flat Rock has accumulated 22 claims — a total that suggests more than isolated flood exposure. With 100% of ZIP codes in designated flood zones, the water-quality implications of flooding move from hypothetical to periodically relevant: treatment intake can be compromised, wells can be infiltrated, and distribution backflow can occur.
Flat Rock has a moderate flood history with 22 FEMA claims averaging $15,632 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>$2,400</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.
What You Can Do in Flat Rock
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 69% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Flat Rock, IN