Water Quality in ALTON, NH (03809)

EPA violation data for public water systems serving ZIP code 03809.

122

Total Violations

Health-Based

Monitoring / Reporting

122

Resolved

What does this mean?

122 of 122 violations have been resolved. 35 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 87 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.

Water systems: 18 Population served: 4,841

Violations Detail (122 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Public Notice	Monitoring	N/A	N/A	Dec 22, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Dec 22, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Dec 22, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Dec 22, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 11, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 11, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 11, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 11, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 9, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 9, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
Arsenic	Health-Based	N/A	0.011	Jun 30, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.011	Jun 30, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.011	Jun 30, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.011	Jun 30, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0169	Mar 31, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0169	Mar 31, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0169	Mar 31, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0169	Mar 31, 2024	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0207	Dec 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0207	Dec 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0207	Dec 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0207	Dec 31, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0161	Sep 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0161	Sep 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0161	Sep 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0161	Sep 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
Arsenic	Health-Based	N/A	0.0161	Sep 30, 2023	Resolved	Skin damage; circulatory system problems; increased risk of cancer
E. COLI	Monitoring	0	N/A	Jul 19, 2023	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 19, 2023	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 19, 2023	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 19, 2023	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 13, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 13, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 13, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 13, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 4, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 4, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 4, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 25, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 25, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 25, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 25, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 25, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 25, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 25, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 25, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 25, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 25, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 3, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 3, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 3, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 3, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 3, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 3, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 3, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 3, 2022	Resolved	N/A
E. COLI	Monitoring	0	N/A	Aug 18, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 18, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 18, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 18, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 10, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 10, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 10, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 10, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 4, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 4, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 4, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 4, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 4, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Aug 4, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 18, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Mar 18, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Mar 18, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Mar 18, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Mar 18, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Mar 18, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 18, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 18, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 18, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 18, 2022	Resolved	N/A
Chlorine	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	Eye and nose irritation; stomach discomfort
Public Notice	Monitoring	N/A	N/A	Oct 27, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 27, 2021	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 17, 2021	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 17, 2021	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 17, 2021	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 17, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 17, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 17, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 17, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 17, 2021	Resolved	N/A
Chlorine	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	Eye and nose irritation; stomach discomfort
E. COLI	Monitoring	0	N/A	Sep 3, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Sep 3, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Sep 3, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Sep 3, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Chlorine	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	Eye and nose irritation; stomach discomfort
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Total Haloacetic Acids (HAA5)	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
TTHM	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	May 24, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	May 24, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2024(24)

Public Notice

Dec 22Resolved

Public Notice

Dec 22Resolved

Public Notice

Dec 22Resolved

Public Notice

Dec 22Resolved

Revised Total Coliform Rule

Nov 11Resolved

Revised Total Coliform Rule

Nov 11Resolved

Revised Total Coliform Rule

Nov 11Resolved

Revised Total Coliform Rule

Nov 11Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 30Resolved

Revised Total Coliform Rule

Sep 9Resolved

Revised Total Coliform Rule

Sep 9Resolved

Revised Total Coliform Rule

Jul 31Resolved

Revised Total Coliform Rule

Jul 31Resolved

Arsenic

Jun 30Resolved

Arsenic

Jun 30Resolved

Arsenic

Jun 30Resolved

Arsenic

Jun 30Resolved

Arsenic

Mar 31Resolved

Arsenic

Mar 31Resolved

Arsenic

Mar 31Resolved

Arsenic

Mar 31Resolved

2023(17)

Arsenic

Dec 31Resolved

Arsenic

Dec 31Resolved

Arsenic

Dec 31Resolved

Arsenic

Dec 31Resolved

Arsenic

Sep 30Resolved

Arsenic

Sep 30Resolved

Arsenic

Sep 30Resolved

Arsenic

Sep 30Resolved

Arsenic

Sep 30Resolved

E. COLI

Jul 19Resolved

E. COLI

Jul 19Resolved

E. COLI

Jul 19Resolved

E. COLI

Jul 19Resolved

Revised Total Coliform Rule

Jan 13Resolved

Revised Total Coliform Rule

Jan 13Resolved

Revised Total Coliform Rule

Jan 13Resolved

Revised Total Coliform Rule

Jan 13Resolved

How Does This Compare?

ALTON (03809) has 122 recorded violations, including 35 health-based. All violations have been resolved, which is a positive sign for current water quality. Consider testing your tap water independently for added peace of mind.

Recommended Water Filters

Based on the contaminants detected in your area, these filter types may help improve your water quality.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

UV Water Purifier

Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.

Targets:E. coli, Coliform, Giardia, Cryptosporidium

Look for:NSF/ANSI 55 (Class A) certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Always look for filters certified by NSF International for the specific contaminants you want to remove.

Water Quality in ALTON, NH (03809)

What does this mean?

Violations Detail (122 total)

Lead & Copper Levels

Violation Timeline

2024(24)

2023(17)

2022(49)

2021(32)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

Activated Carbon Filter

UV Water Purifier

Nearby ZIP Codes

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