Jefferson Valley, NY: High Radon Risk — 53/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Water compliance in Jefferson Valley, NY ranks below average — documented gaps in multiple service areas.
How Jefferson Valley Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Jefferson Valley Residents
- Homes built before 1986: 100% — older plumbing may contain lead solder.
- Estimated remediation: $3,000 per household.
- CDC health risk index: 10.47.
Jefferson Valley's Water Providers
Water service in Jefferson Valley, NY is split across 2 utilities out of 2 tracked federally, each operating its own infrastructure and compliance record.
Overview
We track water quality and home safety data for 1 ZIP code in Jefferson Valley, New York (population ~323), covering 2 community water systems serving approximately 36,056 people region-wide.
No EPA violations recorded across any ZIP codes in Jefferson Valley — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Jefferson Valley: 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
Jefferson Valley water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Jefferson Valley
- 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 |
|---|---|---|---|
| 10535 | D | YORKTOWN CONSOLD. WATER DIST.#1 | 36,000 |
All ZIP Codes in Jefferson Valley
- 10535 [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.
Jefferson Valley Community Health Snapshot
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
Jefferson Valley Infrastructure Age
With 100% 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
The lead that enters tap water in older homes often comes not from the municipal supply but from the home's own plumbing — from solder used in copper joints before the 1986 federal ban, or from lead pipes installed before 1970. In Jefferson Valley, where the median build year is 1967, these older materials are widespread. More than half the residential stock predates the 1986 solder ban, and a significant fraction predates 1970 as well. For residents in those homes, the city-wide water quality picture is a less relevant frame than the specific materials inside their own walls and under their own street.
Over half of homes in Jefferson Valley 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.
How Remediation Costs Compare in Jefferson Valley
When estimated remediation is placed alongside median property values in Jefferson Valley, the resulting ratio is low — a finding consistent with a household financial perspective where documented issues can be addressed without a meaningful impact on overall equity position, making this market one of the more favorable contexts for remediation planning.
Remediation costs in Jefferson Valley are relatively low compared to home values. The $2,000–$4,100 estimated range is a small fraction of median property value. Home values are 8% below the New York average.
Jefferson Valley: Lead Risk & Vulnerable Populations
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.
Wherever 100% of local housing was built before solder rules changed — as is the case in Jefferson Valley — a faucet-level sample closes the gap that aggregate utility data cannot.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Jefferson Valley: Flood History & Water Damage Risk
Jefferson Valley's flood exposure sits in the moderate range: 6 NFIP claims on record and 100% of ZIP codes within FEMA-designated flood zones. Residents with private wells or older infrastructure have reasonable grounds to factor flood timing into their water quality awareness.
Jefferson Valley has a moderate flood history with 6 FEMA claims averaging $9,691 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>$3,000</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 Jefferson Valley
- 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 100% 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 Jefferson Valley, NY