Alton Bay, NH: 1 Violation - Home Safety Score unavailable
1 ZIP code · 1 water system · Updated
Data: EPA SDWIS
What You Should Know About Alton Bay Water
- Water systems mapped to your city have 1 violation on record since 2021.
- Average of reported 90th-percentile lead results: 0.21 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average.
- Homes built before 1986: 63% - older plumbing may contain lead solder.
- Estimated remediation: $3,780 per household.
- Health risk index (ZipCheckup composite of CDC data): 12.77.
Who Supplies Your Water in Alton Bay
A single entry in the list below does not mean one utility serves all of Alton Bay, NH: it means one system appears there, while federal records link 1 to the area. Service areas and ZIP codes do not line up exactly, so the utility named on a household's water bill is the one whose record applies to that home.
Overview
We track home safety data for 1 ZIP code in Alton Bay, New Hampshire, covering 1 community water system serving approximately 2,269 people. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.
Water Sources
Alton Bay water systems draw from: Groundwater.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.2100 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 1 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
1 of 1 ZIP records with known zones is in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Lead and Copper Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 03810 | — | 1 | 0 | Alton Water Works |
All ZIP Codes in Alton Bay
- 03810 - 1 violation recorded for mapped water systems
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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Health Outcomes in Alton Bay
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Top Contaminants in Alton Bay Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Alton Bay
With 63% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
If you live in one of the pre-1986 homes in Alton Bay, a certified lab test for lead is the direct way to learn what your tap delivers; the median build year of 1974 is only context.
Over half of homes in Alton Bay were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Alton Bay Homeowners
How large is the remediation estimate next to home prices in Alton Bay? Small in relative terms: it amounts to 1% of the median value or less, although the dollar figure below is still an estimate and actual costs vary by property and contractor.
Estimated remediation costs in Alton Bay can be compared with local home values. The $2,520–$5,040 estimated range can be set against the median property value; actual costs vary by home. Home values are 57% above the New Hampshire average.
Lead Exposure Risk for Children in Alton Bay
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Several steps are open to Alton Bay households. Area lead results, averaged by ZIP code, run higher than 0.015 mg/L, while 63% of homes date from before 1986. A certified laboratory test measures lead at the tap, the utility's service line inventory shows how a home's line is classified, and a filter certified to NSF/ANSI 53 for lead reduction can be used for drinking and cooking water while results are pending.
1 ZIP code (100% of the city's ZIP records) is served by a water system whose 90th-percentile lead result exceeds the EPA action level of 0.015 mg/L.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Alton Bay
Historical NFIP data for Alton Bay contains 2 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $13,594. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
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. The $3,780 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Alton Bay, NH