Guston, KY Water Safety: 53/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
Monitoring data across Guston reveals a persistent pattern of below-average compliance in KY — multiple service areas carry documented health violations, and the data has shown little overall improvement over recent EPA reporting cycles.
How Guston Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Guston Water
- Homes built before 1986: 41% — older plumbing may contain lead solder.
- Estimated remediation: $400 per household.
Who Supplies Your Water in Guston
3 water systems are tracked federally in Guston, KY. The top 3 providers collectively serve most residential addresses, but because they operate independently, infrastructure maintenance standards and compliance histories differ from one service zone to another.
Overview
We track water quality and home safety data for 1 ZIP code in Guston, Kentucky (population ~2,213), covering 3 community water systems serving approximately 34,737 people region-wide.
No EPA violations recorded across any ZIP codes in Guston — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Guston: D (53/100)
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
Guston water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Guston
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate 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 |
|---|---|---|---|
| 40142 | D | Hardin County Water District #1 | 30,230 |
All ZIP Codes in Guston
- 40142 [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.
Housing & Infrastructure in Guston
With 41% 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
Prohibited from residential plumbing since 1986, lead solder divides Guston's housing stock along a timeline that the median build year of 1996 straddles. A meaningful share of homes predates the ban — a configuration that places moderate aggregate pressure on plumbing-related lead risk, distributed unevenly across neighborhoods.
Most homes in Guston 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.
Cost Context: What Remediation Means for Guston Homeowners
In Guston, property values comfortably outpace what documented remediation typically costs — the equity share is proportionally low.
Remediation costs in Guston are relatively low compared to home values. The $0–$800 estimated range is a small fraction of median property value. Home values are 3% below the Kentucky average.
Lead Exposure Risk for Children in Guston
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.
Before the federal solder ban, lead solder was a routine plumbing material, and 41% of the Guston inventory was built in that earlier era — a share large enough to move household-level reads onto the standard list.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Guston
- 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 41% 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 Guston, KY