Derry, 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
Old Coach Village
- PWSID:
- NH0612210
- Source:
- Ground water
- Serves:
- 50 people
Centennial Estates
- PWSID:
- NH0613060
- Source:
- Ground water
- Serves:
- 140 people
Maple Haven
- PWSID:
- NH0612170
- Source:
- Ground water
- Serves:
- 258 people
Maple Hill Acres
- PWSID:
- NH0612020
- Source:
- Surface water
- Serves:
- 500 people
Oakwood Terrace
- PWSID:
- NH0612010
- Source:
- Surface water
- Serves:
- 310 people
Glen Ridge Dev
- PWSID:
- NH0612070
- Source:
- Ground water
- Serves:
- 263 people
Derry Water Dept
- PWSID:
- NH0611010
- Source:
- Surface water
- Serves:
- 17,370 people
Morningside Drive
- PWSID:
- NH0612050
- Source:
- Ground water
- Serves:
- 80 people
Autumn Woods
- PWSID:
- NH0612220
- Source:
- Ground water
- Serves:
- 73 people
Rand Shepard Hill
- PWSID:
- NH0612230
- Source:
- Ground water
- Serves:
- 158 people
Willow Bend
- PWSID:
- NH0612240
- Source:
- Ground water
- Serves:
- 55 people
Annie Oakley MHP
- PWSID:
- NH0613010
- Source:
- Ground water
- Serves:
- 127 people
Running Brook
- PWSID:
- NH0613030
- Source:
- Ground water
- Serves:
- 47 people
Drew Woods
- PWSID:
- NH0612150
- Source:
- Surface water
- Serves:
- 1,413 people
Farmstead Acres
- PWSID:
- NH0612110
- Source:
- Ground water
- Serves:
- 93 people
Hi And Lo Estates
- PWSID:
- NH0612140
- Source:
- Surface water
- Serves:
- 150 people
EPA & DEP violations
Maple Hill Acres
PWSID NH06120201 violationMonitoring violation — MAPLE HILL ACRES
low severityResolvedEPA SDWIS violation 1800002 (code 27) at MAPLE HILL ACRES (PWSID NH0612020).
EPA SDWIS · Monitoring violation · Began Apr 1, 2018 · 8 years ago · Source ↗
Oakwood Terrace
PWSID NH06120101 violationMonitoring violation — OAKWOOD TERRACE
low severityResolvedEPA SDWIS violation 1800003 (code 27) at OAKWOOD TERRACE (PWSID NH0612010).
EPA SDWIS · Monitoring violation · Began Apr 1, 2018 · 8 years ago · Source ↗
Drew Woods
PWSID NH06121502 violationsMonitoring violation — DREW WOODS
low severityResolvedEPA SDWIS violation 1800006 (code 27) at DREW WOODS (PWSID NH0612150).
EPA SDWIS · Monitoring violation · Began Apr 1, 2018 · 8 years ago · Source ↗
Monitoring violation — DREW WOODS
low severityResolvedEPA SDWIS violation 1000004 (code 52) at DREW WOODS (PWSID NH0612150).
EPA SDWIS · Monitoring violation · Began Jan 1, 2009 · 17 years ago · Source ↗
Hi And Lo Estates
PWSID NH06121401 violationMonitoring violation — HI AND LO ESTATES
low severityResolvedEPA SDWIS violation 1800002 (code 27) at HI AND LO ESTATES (PWSID NH0612140).
EPA SDWIS · Monitoring violation · Began Apr 1, 2018 · 8 years ago · Source ↗
City-wide
20 violationsArsenic — MR violation
medium severityResolvedArsenic MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2023 · 2 years ago · Source ↗
Nitrate — MCL violation
high severityHealth-basedResolvedNitrate MCL violation (Resolved).
EPA SDWIS · MCL · Began Jul 1, 2023 · 3 years ago · Source ↗
E. COLI — MR violation
medium severityResolvedE. COLI MR violation (Resolved).
EPA SDWIS · MR · Began Jan 11, 2023 · 3 years ago · Source ↗
Revised Total Coliform Rule — RPT violation
medium severityResolvedRevised Total Coliform Rule RPT violation (Resolved).
EPA SDWIS · RPT · Began May 10, 2022 · 4 years ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2022 · 4 years ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Apr 1, 2022 · 4 years ago · Source ↗
Revised Total Coliform Rule — RPT violation
medium severityResolvedRevised Total Coliform Rule RPT violation (Resolved).
EPA SDWIS · RPT · Began Apr 1, 2021 · 5 years ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Apr 1, 2021 · 5 years ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Dec 31, 2020 · 5 years ago · Source ↗
Chlorine — MR violation
medium severityResolvedChlorine MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2018 · 8 years ago · Source ↗
Chlorine — MR violation
medium severityResolvedChlorine MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2018 · 8 years ago · Source ↗
Chlorine — MR violation
medium severityResolvedChlorine MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2018 · 8 years ago · Source ↗
Chlorine — MR violation
medium severityResolvedChlorine MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2018 · 8 years ago · Source ↗
E. COLI — MR violation
medium severityResolvedE. COLI MR violation (Resolved).
EPA SDWIS · MR · Began Aug 31, 2017 · 8 years ago · Source ↗
Arsenic — MCL violation
high severityHealth-basedResolvedArsenic MCL violation (Resolved).
EPA SDWIS · MCL · Began Apr 1, 2017 · 9 years ago · Source ↗
Arsenic — MCL violation
high severityHealth-basedResolvedArsenic MCL violation (Resolved).
EPA SDWIS · MCL · Began Jan 1, 2017 · 9 years ago · Source ↗
Arsenic — MCL violation
high severityHealth-basedResolvedArsenic MCL violation (Resolved).
EPA SDWIS · MCL · Began Oct 1, 2016 · 9 years ago · Source ↗
Arsenic — MCL violation
high severityHealth-basedResolvedArsenic MCL violation (Resolved).
EPA SDWIS · MCL · Began Jul 1, 2016 · 10 years ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityResolvedConsumer Confidence Rule Other violation (Resolved).
EPA SDWIS · Other · Began Jul 1, 2016 · 10 years ago · Source ↗
E. COLI — MR violation
medium severityResolvedE. COLI MR violation (Resolved).
EPA SDWIS · MR · Began Feb 4, 2016 · 10 years ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.