Alton, NH
Contamination score
Higher = more contaminated vs. other cities.
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Reported illness & cancer claims
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Self-reported issues
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Pollution sources & reported claims near your water
Factories, greenhouses, and contaminated sites mapped around the water supply. Tap any circle for detail.
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Public water systems
Alton Water Works
- PWSID:
- NH0061010
- Source:
- Ground water
- Serves:
- 1,800 people
Merrymeeting MHP
- PWSID:
- NH0063020
- Source:
- Ground water
- Serves:
- 265 people
Lakeside At Winnipesaukee
- PWSID:
- NH0062050
- Source:
- Ground water
- Serves:
- 85 people
Eagles Rest MHP
- PWSID:
- NH0062010
- Source:
- Ground water
- Serves:
- 138 people
EPA & DEP violations
Alton Water Works
PWSID NH00610101 violationLead and Copper Rule — MR violation
medium severityUnaddressedLead and Copper Rule MR violation (Unaddressed).
EPA SDWIS · MR · Began Mar 31, 2026 · 4 months ago · Source ↗
City-wide
19 violationsPublic Notice — Other violation
medium severityResolvedPublic Notice Other violation (Resolved).
EPA SDWIS · Other · Began Mar 7, 2023 · 3 years ago · Source ↗
Public Notice — Other violation
medium severityResolvedPublic Notice Other violation (Resolved).
EPA SDWIS · Other · Began Mar 7, 2023 · 3 years ago · Source ↗
Arsenic — MR violation
medium severityResolvedArsenic MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2022 · 3 years ago · Source ↗
Nitrate — MR violation
medium severityResolvedNitrate MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2022 · 4 years ago · Source ↗
Arsenic — MR violation
medium severityResolvedArsenic MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2021 · 4 years ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityResolvedConsumer Confidence Rule Other violation (Resolved).
EPA SDWIS · Other · Began Jul 1, 2021 · 5 years ago · Source ↗
Nitrate — MR violation
medium severityResolvedNitrate MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
Combined Uranium — MR violation
medium severityResolvedCombined Uranium MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
cis-1,2-Dichloroethylene — MR violation
medium severityResolvedcis-1,2-Dichloroethylene MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
Xylenes, Total — MR violation
medium severityResolvedXylenes, Total MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
DICHLOROMETHANE — MR violation
medium severityResolvedDICHLOROMETHANE MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
1,1-Dichloroethylene — MR violation
medium severityResolved1,1-Dichloroethylene MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
trans-1,2-Dichloroethylene — MR violation
medium severityResolvedtrans-1,2-Dichloroethylene MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
1,2-Dichloroethane — MR violation
medium severityResolved1,2-Dichloroethane MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
1,1,1-Trichloroethane — MR violation
medium severityResolved1,1,1-Trichloroethane MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
Carbon tetrachloride — MR violation
medium severityResolvedCarbon tetrachloride MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
1,2-Dichloropropane — MR violation
medium severityResolved1,2-Dichloropropane MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
Trichloroethylene — MR violation
medium severityResolvedTrichloroethylene MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
1,1,2-Trichloroethane — MR violation
medium severityResolved1,1,2-Trichloroethane MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2021 · 5 years ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.