City water profile

Water hardness in Hopkinton

Find official utility reports, understand hardness, and check the water system serving your home in Hopkinton, Rhode Island.

Utility-reported hardness

Not yet available

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State comparison: Unavailable
Evidence comparison rank: —
Matched utilities: 5
Active health records: 2

Your tap water

What does the utility report?

Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.

Utility hardness unavailable in this index

Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.

Find an official utility report →

Convert a hardness result →Test your tap →

Match the name on your water bill

Your utility’s measurements and compliance records

These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.

EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.

Lindhbrook Water Company

RI1000098 · Groundwater · 200 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

2 reported active health-based record(s) for this system

Find this utility’s official report →

Measurements (2)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.0028 mg/L
Action level: 0.015 mg/L

19% of the listed benchmark

Monitoring period: Jul 1, 2023 to Dec 31, 2023

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 1.54 mg/L
Action level: 1.3 mg/L

118% of the listed benchmark

Monitoring period: Jul 1, 2025 to Dec 31, 2025

Violation history (101)

Imported violation history for Lindhbrook Water Company
Rule	Status	Period
Revised Total Coliform Rule	Archived	Jan 1, 2025 to Mar 31, 2025
Lead and Copper RuleHealth-based	Unaddressed	Nov 18, 2024
Lead and Copper Rule	Unaddressed	Sep 28, 2024
E. COLI	Resolved	Aug 23, 2024 to Aug 22, 2024
Groundwater RuleHealth-based	Unaddressed	Apr 16, 2024
Revised Total Coliform Rule	Resolved	Apr 1, 2024 to Jun 30, 2024
Lead and Copper Rule	Unaddressed	Mar 30, 2024
Lead and Copper Rule	Unaddressed	Sep 28, 2023
Nitrate	Resolved	Jan 1, 2023 to Dec 31, 2023
Lead and Copper Rule	Resolved	Jul 1, 2022 to Nov 28, 2022
Lead and Copper Rule	Resolved	Jul 1, 2022 to Dec 31, 2022
Consumer Confidence Rule	Resolved	Jul 1, 2022 to Oct 16, 2022
Methoxychlor	Resolved	Apr 1, 2022 to Jun 30, 2022
Toxaphene	Resolved	Apr 1, 2022 to Jun 30, 2022
Dalapon	Resolved	Apr 1, 2022 to Jun 30, 2022
OXAMYL	Resolved	Apr 1, 2022 to Jun 30, 2022
Simazine	Resolved	Apr 1, 2022 to Jun 30, 2022
Picloram	Resolved	Apr 1, 2022 to Jun 30, 2022
Dinoseb	Resolved	Apr 1, 2022 to Jun 30, 2022
Hexachlorocyclopentadiene	Resolved	Apr 1, 2022 to Jun 30, 2022
Aldicarb sulfoxide	Resolved	Apr 1, 2022 to Jun 30, 2022
Heptachlor	Resolved	Apr 1, 2022 to Jun 30, 2022
Heptachlor epoxide	Resolved	Apr 1, 2022 to Jun 30, 2022
1,2-DIBROMO-3-CHLOROPROPANE	Resolved	Apr 1, 2022 to Jun 30, 2022
2,4-D	Resolved	Apr 1, 2022 to Jun 30, 2022
Di(2-ethylhexyl) adipate	Resolved	Apr 1, 2022 to Jun 30, 2022
BHC-GAMMA	Resolved	Apr 1, 2022 to Jun 30, 2022
Atrazine	Resolved	Apr 1, 2022 to Jun 30, 2022
Benzo(a)pyrene	Resolved	Apr 1, 2022 to Jun 30, 2022
Endrin	Resolved	Apr 1, 2022 to Jun 30, 2022
Pentachlorophenol	Resolved	Apr 1, 2022 to Jun 30, 2022
2,4,5-TP	Resolved	Apr 1, 2022 to Jun 30, 2022
ETHYLENE DIBROMIDE	Resolved	Apr 1, 2022 to Jun 30, 2022
Di(2-ethylhexyl) phthalate	Resolved	Apr 1, 2022 to Jun 30, 2022
Chlordane	Resolved	Apr 1, 2022 to Jun 30, 2022
Carbofuran	Resolved	Apr 1, 2022 to Jun 30, 2022
Aldicarb sulfone	Resolved	Apr 1, 2022 to Jun 30, 2022
Aldicarb	Resolved	Apr 1, 2022 to Jun 30, 2022
LASSO	Resolved	Apr 1, 2022 to Jun 30, 2022
HEXACHLOROBENZENE	Resolved	Apr 1, 2022 to Jun 30, 2022
Lead and Copper Rule	Resolved	Jan 1, 2022 to Jun 30, 2022
Lead and Copper Rule	Resolved	Jan 1, 2022 to Sep 26, 2022
BHC-GAMMA	Resolved	Oct 1, 2021 to Dec 31, 2021
Di(2-ethylhexyl) adipate	Resolved	Oct 1, 2021 to Dec 31, 2021
OXAMYL	Resolved	Oct 1, 2021 to Dec 31, 2021
Hexachlorocyclopentadiene	Resolved	Oct 1, 2021 to Dec 31, 2021
Aldicarb sulfone	Resolved	Oct 1, 2021 to Dec 31, 2021
LASSO	Resolved	Oct 1, 2021 to Dec 31, 2021
2,4,5-TP	Resolved	Oct 1, 2021 to Dec 31, 2021
HEXACHLOROBENZENE	Resolved	Oct 1, 2021 to Dec 31, 2021
Benzo(a)pyrene	Resolved	Oct 1, 2021 to Dec 31, 2021
Dalapon	Resolved	Oct 1, 2021 to Dec 31, 2021
Dinoseb	Resolved	Oct 1, 2021 to Dec 31, 2021
ETHYLENE DIBROMIDE	Resolved	Oct 1, 2021 to Dec 31, 2021
Atrazine	Resolved	Oct 1, 2021 to Dec 31, 2021
2,4-D	Resolved	Oct 1, 2021 to Dec 31, 2021
Chlordane	Resolved	Oct 1, 2021 to Dec 31, 2021
Heptachlor epoxide	Resolved	Oct 1, 2021 to Dec 31, 2021
Simazine	Resolved	Oct 1, 2021 to Dec 31, 2021
Heptachlor	Resolved	Oct 1, 2021 to Dec 31, 2021
Methoxychlor	Resolved	Oct 1, 2021 to Dec 31, 2021
Pentachlorophenol	Resolved	Oct 1, 2021 to Dec 31, 2021
1,2-DIBROMO-3-CHLOROPROPANE	Resolved	Oct 1, 2021 to Dec 31, 2021
Toxaphene	Resolved	Oct 1, 2021 to Dec 31, 2021
Carbofuran	Resolved	Oct 1, 2021 to Dec 31, 2021
Endrin	Resolved	Oct 1, 2021 to Dec 31, 2021
Di(2-ethylhexyl) phthalate	Resolved	Oct 1, 2021 to Dec 31, 2021
Aldicarb sulfoxide	Resolved	Oct 1, 2021 to Dec 31, 2021
Aldicarb	Resolved	Oct 1, 2021 to Dec 31, 2021
Picloram	Resolved	Oct 1, 2021 to Dec 31, 2021
Lead and Copper Rule	Resolved	Jul 1, 2021 to Dec 31, 2021
Endrin	Resolved	Apr 1, 2021 to Jun 30, 2021
Toxaphene	Resolved	Apr 1, 2021 to Jun 30, 2021
OXAMYL	Resolved	Apr 1, 2021 to Jun 30, 2021
Simazine	Resolved	Apr 1, 2021 to Jun 30, 2021
Di(2-ethylhexyl) phthalate	Resolved	Apr 1, 2021 to Jun 30, 2021
Picloram	Resolved	Apr 1, 2021 to Jun 30, 2021
Dinoseb	Resolved	Apr 1, 2021 to Jun 30, 2021
Hexachlorocyclopentadiene	Resolved	Apr 1, 2021 to Jun 30, 2021
Aldicarb sulfoxide	Resolved	Apr 1, 2021 to Jun 30, 2021
Aldicarb sulfone	Resolved	Apr 1, 2021 to Jun 30, 2021
Carbofuran	Resolved	Apr 1, 2021 to Jun 30, 2021
Aldicarb	Resolved	Apr 1, 2021 to Jun 30, 2021
Atrazine	Resolved	Apr 1, 2021 to Jun 30, 2021
Heptachlor	Resolved	Apr 1, 2021 to Jun 30, 2021
2,4,5-TP	Resolved	Apr 1, 2021 to Jun 30, 2021
HEXACHLOROBENZENE	Resolved	Apr 1, 2021 to Jun 30, 2021
Lead and Copper RuleHealth-based	Resolved	Apr 1, 2021 to Mar 7, 2022
2,4-D	Resolved	Apr 1, 2021 to Jun 30, 2021
Chlordane	Resolved	Apr 1, 2021 to Jun 30, 2021
Heptachlor epoxide	Resolved	Apr 1, 2021 to Jun 30, 2021
Dalapon	Resolved	Apr 1, 2021 to Jun 30, 2021
LASSO	Resolved	Apr 1, 2021 to Jun 30, 2021
Di(2-ethylhexyl) adipate	Resolved	Apr 1, 2021 to Jun 30, 2021
1,2-DIBROMO-3-CHLOROPROPANE	Resolved	Apr 1, 2021 to Jun 30, 2021
Benzo(a)pyrene	Resolved	Apr 1, 2021 to Jun 30, 2021
Methoxychlor	Resolved	Apr 1, 2021 to Jun 30, 2021
BHC-GAMMA	Resolved	Apr 1, 2021 to Jun 30, 2021
Pentachlorophenol	Resolved	Apr 1, 2021 to Jun 30, 2021
ETHYLENE DIBROMIDE	Resolved	Apr 1, 2021 to Jun 30, 2021
Lead and Copper Rule	Resolved	Jan 1, 2021 to Jun 30, 2021

Bethel Village Water Assn

RI1000045 · Groundwater · 180 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.005 mg/L
Action level: 0.015 mg/L

33% of the listed benchmark

Monitoring period: Jan 1, 2023 to Jun 30, 2023

Violation history (81)

Imported violation history for Bethel Village Water Assn
Rule	Status	Period
Lead and Copper Rule	Unaddressed	Jan 1, 2026
Lead and Copper Rule	Unaddressed	Sep 29, 2025
Consumer Confidence Rule	Resolved	Jul 1, 2025 to Jul 2, 2025
Lead and Copper Rule	Resolved	Jan 1, 2025 to Feb 4, 2025
Revised Total Coliform Rule	Resolved	Jan 1, 2025 to Mar 31, 2025
Lead and Copper Rule	Addressed	Oct 1, 2024
1,2,4-Trichlorobenzene	Resolved	Jan 1, 2024 to Dec 31, 2024
Xylenes, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
o-Dichlorobenzene	Resolved	Jan 1, 2024 to Dec 31, 2024
p-Dichlorobenzene	Resolved	Jan 1, 2024 to Dec 31, 2024
Vinyl chloride	Resolved	Jan 1, 2024 to Dec 31, 2024
trans-1,2-Dichloroethylene	Resolved	Jan 1, 2024 to Dec 31, 2024
1,2-Dichloroethane	Resolved	Jan 1, 2024 to Dec 31, 2024
1,1,1-Trichloroethane	Resolved	Jan 1, 2024 to Dec 31, 2024
1,2-Dichloropropane	Resolved	Jan 1, 2024 to Dec 31, 2024
Trichloroethylene	Resolved	Jan 1, 2024 to Dec 31, 2024
Ethylbenzene	Resolved	Jan 1, 2024 to Dec 31, 2024
BHC-GAMMA	Resolved	Jan 1, 2024 to Dec 31, 2024
Methoxychlor	Resolved	Jan 1, 2024 to Dec 31, 2024
Dalapon	Resolved	Jan 1, 2024 to Dec 31, 2024
OXAMYL	Resolved	Jan 1, 2024 to Dec 31, 2024
Simazine	Resolved	Jan 1, 2024 to Dec 31, 2024
Picloram	Resolved	Jan 1, 2024 to Dec 31, 2024
Hexachlorocyclopentadiene	Resolved	Jan 1, 2024 to Dec 31, 2024
Aldicarb sulfoxide	Resolved	Jan 1, 2024 to Dec 31, 2024
Aldicarb sulfone	Resolved	Jan 1, 2024 to Dec 31, 2024
Carbofuran	Resolved	Jan 1, 2024 to Dec 31, 2024
Aldicarb	Resolved	Jan 1, 2024 to Dec 31, 2024
Heptachlor	Resolved	Jan 1, 2024 to Dec 31, 2024
Heptachlor epoxide	Resolved	Jan 1, 2024 to Dec 31, 2024
2,4-D	Resolved	Jan 1, 2024 to Dec 31, 2024
2,4,5-TP	Resolved	Jan 1, 2024 to Dec 31, 2024
HEXACHLOROBENZENE	Resolved	Jan 1, 2024 to Dec 31, 2024
1,2-DIBROMO-3-CHLOROPROPANE	Resolved	Jan 1, 2024 to Dec 31, 2024
ETHYLENE DIBROMIDE	Resolved	Jan 1, 2024 to Dec 31, 2024
Combined Uranium	Resolved	Jan 1, 2024 to Dec 31, 2024
Nitrate	Resolved	Jan 1, 2024 to Dec 31, 2024
CYANIDE	Resolved	Jan 1, 2024 to Dec 31, 2024
Mercury	Resolved	Jan 1, 2024 to Dec 31, 2024
Nickel	Resolved	Jan 1, 2024 to Dec 31, 2024
Antimony, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Beryllium, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Thallium, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Toluene	Resolved	Jan 1, 2024 to Dec 31, 2024
E. COLI	Resolved	Jan 1, 2024 to Dec 31, 2024
CHLOROBENZENE	Resolved	Jan 1, 2024 to Dec 31, 2024
1,1,2-Trichloroethane	Resolved	Jan 1, 2024 to Dec 31, 2024
Carbon tetrachloride	Resolved	Jan 1, 2024 to Dec 31, 2024
Chlordane	Resolved	Jan 1, 2024 to Dec 31, 2024
Pentachlorophenol	Resolved	Jan 1, 2024 to Dec 31, 2024
Lead and Copper Rule	Resolved	Jan 1, 2024 to Jun 3, 2024
DICHLOROMETHANE	Resolved	Jan 1, 2024 to Dec 31, 2024
Benzo(a)pyrene	Resolved	Jan 1, 2024 to Dec 31, 2024
cis-1,2-Dichloroethylene	Resolved	Jan 1, 2024 to Dec 31, 2024
Di(2-ethylhexyl) adipate	Resolved	Jan 1, 2024 to Dec 31, 2024
Styrene	Resolved	Jan 1, 2024 to Dec 31, 2024
Endrin	Resolved	Jan 1, 2024 to Dec 31, 2024
Nitrite	Resolved	Jan 1, 2024 to Dec 31, 2024
Cadmium	Resolved	Jan 1, 2024 to Dec 31, 2024
Dinoseb	Resolved	Jan 1, 2024 to Dec 31, 2024
Arsenic	Resolved	Jan 1, 2024 to Dec 31, 2024
1,1-Dichloroethylene	Resolved	Jan 1, 2024 to Dec 31, 2024
Tetrachloroethylene	Resolved	Jan 1, 2024 to Dec 31, 2024
Toxaphene	Resolved	Jan 1, 2024 to Dec 31, 2024
Atrazine	Resolved	Jan 1, 2024 to Dec 31, 2024
Di(2-ethylhexyl) phthalate	Resolved	Jan 1, 2024 to Dec 31, 2024
Benzene	Resolved	Jan 1, 2024 to Dec 31, 2024
Barium	Resolved	Jan 1, 2024 to Dec 31, 2024
LASSO	Resolved	Jan 1, 2024 to Dec 31, 2024
Selenium	Resolved	Jan 1, 2024 to Dec 31, 2024
Chromium	Resolved	Jan 1, 2024 to Dec 31, 2024
Public Notice	Resolved	May 22, 2023 to Jul 1, 2024
Public Notice	Resolved	Apr 2, 2023 to Jul 1, 2024
Public Notice	Resolved	Apr 2, 2023 to Jul 1, 2024
Lead and Copper Rule	Resolved	Jan 1, 2023 to Jun 20, 2023
Lead and Copper Rule	Resolved	Jul 1, 2022 to Jun 9, 2023
Lead and Copper Rule	Resolved	Jan 1, 2022 to Jun 20, 2023
Consumer Confidence Rule	Resolved	Oct 2, 2021 to Sep 1, 2022
Lead and Copper Rule	Resolved	Jul 1, 2021 to Jun 20, 2023
Public Notice	Resolved	Apr 4, 2021 to May 13, 2021
Public Notice	Resolved	Apr 4, 2021 to May 13, 2021

Canonchet Cliffs Water Association Inc.

RI1900053 · Groundwater · 154 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (2)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.004 mg/L
Action level: 0.015 mg/L

27% of the listed benchmark

Monitoring period: Jan 1, 2022 to Dec 31, 2024

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 2.67 mg/L
Action level: 1.3 mg/L

205% of the listed benchmark

Monitoring period: Jul 1, 2002 to Dec 31, 2002

Violation history (1)

Imported violation history for Canonchet Cliffs Water Association Inc.
Rule	Status	Period
Revised Total Coliform RuleHealth-based	Resolved	Nov 1, 2021 to Nov 30, 2021

Hopkinton, Town Of

RI2980473 · Groundwater · 125 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jul 1, 2023 to Dec 31, 2023

Violation history (4)

Imported violation history for Hopkinton, Town Of
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2025 to Aug 7, 2025
Public Notice	Resolved	Dec 27, 2022 to Jan 5, 2023
Revised Total Coliform RuleHealth-based	Resolved	Nov 2, 2022 to Jan 3, 2023
Lead and Copper Rule	Resolved	Jan 1, 2021 to Jun 20, 2021

Saugatucket Springs

RI2980423 · Groundwater · 110 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.001 mg/L
Action level: 0.015 mg/L

7% of the listed benchmark

Monitoring period: Jan 1, 2020 to Dec 31, 2022

Violation history (1)

Imported violation history for Saugatucket Springs
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Jul 9, 2024

City summary

What the indexed records say

Hopkinton has 1 published ZIP profile across Washington County. The regional-evidence median is 62 PPM. The city does not meet the stricter comparison standard.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs

Moderately hard1 ZIP

Hard0 ZIPs

Very hard0 ZIPs

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 5.9 miles
Profiles with evidence: 1/1

Confidence labels

High: 1Moderate: 0Low: 0

Observation window: May 17, 2016 to Nov 21, 2025.

ZIP directory

Water reports in Hopkinton

Open a ZIP for site-level provenance and measurements.

ZIP code

02833

Moderately Hard

62.4 PPM

Nearest site: 5.9 mi
Confidence: High

View full ZIP evidence →

Practical next steps

Move from index to evidence

1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
3. Use a measured hardness result. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other Rhode Island communities

Charlestown

Washington County

54 PPM median

Westerly

Washington County

66 PPM median

Tiverton

Newport County

46 PPM median

Woonsocket

Providence County

33 PPM median

Newport

Newport County

23 PPM median

Pawtucket

Providence County

22 PPM median

Search all 12 Rhode Island cities →

Questions people ask

About water in Hopkinton

Is the water hard?

Check the utility-reported result above when available. Nearby environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.