Dennis, KS Water Safety: 53/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Federal monitoring data for Dennis puts the city in KS's lower safety tier — exceedances show up in multiple utility districts, several systems have met thresholds requiring public notification under the Safe Drinking Water Act, and the compliance deficit has persisted across more than one consecutive reporting cycle, with no clear reversal visible in the most recent data available.
How Dennis Compares
Data: EPA SDWIS Last verified: 2026-06-03
Dennis Water: The Quick Version
- Homes built before 1986: 40% — older plumbing may contain lead solder.
- Estimated remediation: $400 per household.
- CDC health risk index: 15.16 — above typical levels.
Water Systems Serving Dennis
Federal records track 1 water system in Dennis, KS, and a single provider handles the dominant share of residential connections while carrying primary responsibility for EPA compliance.
Overview
We track water quality and home safety data for 1 ZIP code in Dennis, Kansas (population ~817), covering 1 community water system serving approximately 9,479 people region-wide.
No EPA violations recorded across any ZIP codes in Dennis — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Dennis: 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
Dennis water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Dennis
- 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 |
|---|---|---|---|
| 67341 | D | PARSONS, CITY OF | 9,479 |
All ZIP Codes in Dennis
- 67341 [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 Dennis
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 Dennis's Housing Stock?
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
A median build year of 1993 in Dennis is characteristic of a mixed-era city where plumbing risk depends heavily on the specific property. Homes built before 1986 may have lead-soldered copper joints; those from before 1970 face the added possibility of lead service lines. The percentages above capture how much of the residential stock falls into each risk era.
A significant portion of Dennis's housing stock predates 1970, when lead pipes were commonly used. Residents in older homes should consider water testing.
Source: U.S. Census Bureau ACS B25034.
Dennis: Remediation Cost in Perspective
Equity impact data for Dennis lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Dennis are relatively low compared to home values. The $0–$800 estimated range is a small fraction of median property value. Home values are 3% above the Kansas average.
Protecting Children from Lead in Dennis
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.
In recent monitoring under the Lead and Copper Rule, citywide samples for Dennis have approached or crossed the regulatory action level on multiple occasions. Combined with 40% of stock dating from the pre-rule era, the picture supports baseline single-tap reads as a standard household-level step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Dennis
- 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 40% 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 Dennis, KS