Water Quality in BLOCK ISLAND, RI (02807)

EPA violation data for public water systems serving ZIP code 02807.

120

Total Violations

Health-Based

109

Monitoring / Reporting

120

Resolved

What does this mean?

120 of 120 violations have been resolved. 11 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 109 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: 53 Population served: 17,999

Violations Detail (120 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 14, 2025	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 14, 2025	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 14, 2025	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 14, 2025	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 14, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Methoxychlor	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Simazine	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
BHC-GAMMA	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Hexachlorocyclopentadiene	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
LASSO	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Heptachlor	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Heptachlor epoxide	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
HEXACHLOROBENZENE	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Benzo(a)pyrene	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Atrazine	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	Cardiovascular system or reproductive problems
Atrazine	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	Cardiovascular system or reproductive problems
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) adipate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Di(2-ethylhexyl) phthalate	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrite	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrite	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrite	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 10, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 10, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 10, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 10, 2022	Resolved	N/A
Nitrate	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Nitrate	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2022	Resolved	N/A
E. COLI	Monitoring	0	N/A	Dec 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Dec 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Dec 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Dec 31, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
E. COLI	Monitoring	0	N/A	Sep 8, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Sep 8, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Sep 8, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Sep 8, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Sep 8, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 24, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 24, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 24, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 24, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 24, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations

Violation Timeline

2025(5)

Revised Total Coliform Rule

May 14Resolved

Revised Total Coliform Rule

May 14Resolved

Revised Total Coliform Rule

May 14Resolved

Revised Total Coliform Rule

May 14Resolved

Revised Total Coliform Rule

May 14Resolved

2023(65)

Revised Total Coliform Rule

Jul 31Resolved

Revised Total Coliform Rule

Jul 31Resolved

Revised Total Coliform Rule

Jul 31Resolved

Revised Total Coliform Rule

Jul 31Resolved

Revised Total Coliform Rule

Jul 31Resolved

BHC-GAMMA

Jun 30Resolved

Benzo(a)pyrene

Jun 30Resolved

BHC-GAMMA

Jun 30Resolved

BHC-GAMMA

Jun 30Resolved

BHC-GAMMA

Jun 30Resolved

Methoxychlor

Jun 30Resolved

Methoxychlor

Jun 30Resolved

Methoxychlor

Jun 30Resolved

Methoxychlor

Jun 30Resolved

Methoxychlor

Jun 30Resolved

Simazine

Jun 30Resolved

Simazine

Jun 30Resolved

Simazine

Jun 30Resolved

Simazine

Jun 30Resolved

Simazine

Jun 30Resolved

BHC-GAMMA

Jun 30Resolved

Di(2-ethylhexyl) phthalate

Jun 30Resolved

Di(2-ethylhexyl) phthalate

Jun 30Resolved

Di(2-ethylhexyl) phthalate

Jun 30Resolved

Di(2-ethylhexyl) phthalate

Jun 30Resolved

Hexachlorocyclopentadiene

Jun 30Resolved

Hexachlorocyclopentadiene

Jun 30Resolved

Hexachlorocyclopentadiene

Jun 30Resolved

Hexachlorocyclopentadiene

Jun 30Resolved

Hexachlorocyclopentadiene

Jun 30Resolved

LASSO

Jun 30Resolved

LASSO

Jun 30Resolved

LASSO

Jun 30Resolved

LASSO

Jun 30Resolved

LASSO

Jun 30Resolved

Heptachlor

Jun 30Resolved

Heptachlor

Jun 30Resolved

Heptachlor

Jun 30Resolved

Heptachlor

Jun 30Resolved

Heptachlor

Jun 30Resolved

Heptachlor epoxide

Jun 30Resolved

Heptachlor epoxide

Jun 30Resolved

Heptachlor epoxide

Jun 30Resolved

Heptachlor epoxide

Jun 30Resolved

Heptachlor epoxide

Jun 30Resolved

HEXACHLOROBENZENE

Jun 30Resolved

HEXACHLOROBENZENE

Jun 30Resolved

HEXACHLOROBENZENE

Jun 30Resolved

HEXACHLOROBENZENE

Jun 30Resolved

HEXACHLOROBENZENE

Jun 30Resolved

Benzo(a)pyrene

Jun 30Resolved

Di(2-ethylhexyl) adipate

Jun 30Resolved

Benzo(a)pyrene

Jun 30Resolved

Benzo(a)pyrene

Jun 30Resolved

Benzo(a)pyrene

Jun 30Resolved

Atrazine

Jun 30Resolved

Atrazine

Jun 30Resolved

Atrazine

Jun 30Resolved

Atrazine

Jun 30Resolved

Atrazine

Jun 30Resolved

Di(2-ethylhexyl) adipate

Jun 30Resolved

Di(2-ethylhexyl) adipate

Jun 30Resolved

Di(2-ethylhexyl) adipate

Jun 30Resolved

Di(2-ethylhexyl) adipate

Jun 30Resolved

Di(2-ethylhexyl) phthalate

Jun 30Resolved

How Does This Compare?

BLOCK ISLAND (02807) has 120 recorded violations, including 11 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

One of the few filtration methods effective at removing nitrates and nitrites. Essential for households with infants.

Targets:Nitrate, Nitrite, Dissolved Solids

Look for:NSF/ANSI 58 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 BLOCK ISLAND, RI (02807)

What does this mean?

Violations Detail (120 total)

Violation Timeline

2025(5)

2023(65)

2022(25)

2021(25)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

UV Water Purifier

Nearby ZIP Codes

Check Another ZIP Code