Williamsport, TN Water Safety: 73/100 (2026)
1 ZIP code · 5 water systems · Updated 2026-06-04
Water utilities in Williamsport have maintained a consistent compliance record over recent monitoring periods — the city's above-average grade in TN reflects low violation rates and no systemic health concerns flagged in current data.
How Williamsport Compares
Data: EPA SDWIS Last verified: 2026-06-04
Williamsport Water: The Quick Version
- Homes built before 1986: 58% — older plumbing may contain lead solder.
- Estimated remediation: $3,000 per household.
- CDC health risk index: 13.76 — above typical levels.
Water Systems Serving Williamsport
3 independent water providers serve Williamsport, TN — 5 systems appear in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Williamsport, Tennessee (population ~688), covering 5 community water systems serving approximately 141,731 people region-wide.
No EPA violations recorded across any ZIP codes in Williamsport — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Williamsport: B (73/100)
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
Williamsport water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Williamsport
- 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 |
|---|---|---|---|
| 38487 | B | Columbia Power and Water Systems | 84,617 |
All ZIP Codes in Williamsport
- 38487 [B]
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 Williamsport
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 Williamsport's Housing Stock?
With 58% 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
Because the majority of Williamsport's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1971 reflects a city where lead-era plumbing materials are common rather than exceptional.
Over half of homes in Williamsport 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.
Williamsport: Remediation Cost in Perspective
Given current Williamsport valuations, the remediation-to-property-value ratio is low — most homeowners are looking at a proportionally modest share that fits within routine financial planning.
Remediation costs in Williamsport are relatively low compared to home values. The $2,100–$4,800 estimated range is a small fraction of median property value. Home values are 48% above the Tennessee average.
Protecting Children from Lead in Williamsport
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.
Even where utility-side monitoring meets Lead and Copper Rule requirements, the 58% pre-rule share in Williamsport keeps interior-plumbing variation as a household-level question that aggregate data cannot resolve.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Williamsport
Flood risk in Williamsport occupies the middle ground: 1 NFIP claim and 100% of local ZIP codes within FEMA flood zones. At that level, the risk pathways connecting flooding to water quality — treatment system stress, well infiltration, distribution backflow — become relevant considerations during significant flood events, even if day-to-day water quality is unaffected by flood history.
Williamsport has a moderate flood history with 1 FEMA claims averaging $90,000 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.
Deep Dive Reports
Detailed analysis for Williamsport, TN