Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Newtown, CT 06470
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Fairfield County.
2 active health-based record(s) across possible systems
- Largest possible serving system
- Aquarion-Eastern Fairfield County
- Source water
- Surface water + Groundwater
- County
- Fairfield County
- Profile updated
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 →At a glance
What the current records say
EPA quarter 2026Q2
All possible systems
Review needed
2 active health-based records
Measurements by utility
Each result belongs to a specific system.
Utility match
5 systems
Serves 351,756 people system-wide
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.
Aquarion-Eastern Fairfield County
CT0150011 · Surface water · 351,756 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
- Reported level
- 0 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2025 to Dec 31, 2025
Violation history (24)
| Rule | Status | Period |
|---|---|---|
| Arsenic | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Barium | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Chromium | Archived | Jan 1, 2021 to Dec 31, 2023 |
| CYANIDE | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Antimony, Total | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Beryllium, Total | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Selenium | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Arsenic | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Cadmium | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Barium | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Mercury | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Nickel | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Antimony, Total | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Nickel | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Cadmium | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Thallium, Total | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Mercury | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Beryllium, Total | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Chromium | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Thallium, Total | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Fluoride | Archived | Jan 1, 2021 to Dec 31, 2023 |
| CYANIDE | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Selenium | Archived | Jan 1, 2021 to Dec 31, 2023 |
| Fluoride | Archived | Jan 1, 2021 to Dec 31, 2023 |
Aquarion-Newtown Regional
CT0970011 · Groundwater · 6,054 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
- 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
Violation history (1)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Unaddressed | Jul 1, 2006 |
Fairfield Hills
CT0970021 · Groundwater · 2,610 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
1 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
- Reported level
- 0.004 mg/L
- Action level
- 0.015 mg/L
27% of the listed benchmark
Monitoring period: Jan 1, 2026 to Jun 30, 2026
Copper (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- 1.44 mg/L
- Action level
- 1.3 mg/L
111% of the listed benchmark
Monitoring period: Jul 1, 1996 to Dec 31, 1996
Violation history (5)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Resolved | Aug 10, 2025 to Nov 3, 2025 |
| Lead and Copper Rule | Unaddressed | Jul 1, 2025 |
| Consumer Confidence Rule | Resolved | Jul 1, 2025 to Nov 3, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Unaddressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONS | Unaddressed | Oct 17, 2024 |
Stone Bridge Center For Health & Rehab
CT0971011 · Groundwater · 504 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
1 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
- Reported level
- 0.0013 mg/L
- Action level
- 0.015 mg/L
9% of the listed benchmark
Monitoring period: Jul 1, 2025 to Dec 31, 2025
Copper (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- 3.87 mg/L
- Action level
- 1.3 mg/L
298% of the listed benchmark
Monitoring period: Jul 1, 1995 to Dec 31, 1995
Violation history (23)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Resolved | Aug 10, 2025 to Aug 18, 2025 |
| LEAD AND COPPER RULE REVISIONS | Unaddressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Unaddressed | Oct 17, 2024 |
| Consumer Confidence Rule | Resolved | Aug 10, 2024 to Aug 18, 2025 |
| Consumer Confidence Rule | Resolved | Jul 1, 2024 to Feb 14, 2025 |
| Consumer Confidence Rule | Resolved | Aug 10, 2023 to Aug 18, 2025 |
| Consumer Confidence Rule | Resolved | Jul 1, 2023 to Feb 14, 2025 |
| Revised Total Coliform Rule | Resolved | May 1, 2023 to May 31, 2023 |
| Chlorine | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Chlorine | Resolved | Nov 1, 2022 to Nov 30, 2022 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2022 to Nov 30, 2022 |
| Revised Total Coliform Rule | Resolved | Oct 1, 2022 to Oct 31, 2022 |
| Chlorine | Resolved | Oct 1, 2022 to Oct 31, 2022 |
| Lead and Copper Rule | Resolved | Oct 1, 2022 to Jun 30, 2023 |
| Chlorine | Resolved | Sep 1, 2022 to Sep 30, 2022 |
| Revised Total Coliform Rule | Resolved | Sep 1, 2022 to Sep 30, 2022 |
| Consumer Confidence Rule | Resolved | Aug 10, 2022 to Aug 18, 2025 |
| Revised Total Coliform Rule | Resolved | Aug 1, 2022 to Aug 31, 2022 |
| Chlorine | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Revised Total Coliform Rule | Resolved | Mar 1, 2022 to Mar 31, 2022 |
| Chlorine | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Total Haloacetic Acids (HAA5) | Resolved | Aug 1, 2021 to Jul 31, 2022 |
| Consumer Confidence Rule | Resolved | Jul 1, 2021 to Jul 6, 2022 |
55 Sugar Street
CT0970071 · Groundwater · 158 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
- Reported level
- 9.1e-4 mg/L
- Action level
- 0.015 mg/L
6% of the listed benchmark
Monitoring period: Jan 1, 2025 to Jun 30, 2025
Violation history (57)
| Rule | Status | Period |
|---|---|---|
| Lead and Copper Rule | Unaddressed | Jan 1, 2026 |
| E. COLI | Resolved | Nov 1, 2025 to Nov 30, 2025 |
| E. COLI | Resolved | Nov 1, 2025 to Nov 30, 2025 |
| Lead and Copper Rule | Resolved | Mar 31, 2024 to May 13, 2024 |
| Consumer Confidence Rule | Resolved | Aug 10, 2023 to Oct 19, 2023 |
| E. COLI | Resolved | Aug 1, 2023 to Aug 31, 2023 |
| E. COLI | Resolved | Aug 1, 2023 to Aug 31, 2023 |
| Consumer Confidence Rule | Resolved | Jul 1, 2023 to Oct 19, 2023 |
| Lead and Copper Rule | Resolved | Jul 1, 2023 to Aug 22, 2023 |
| Total Haloacetic Acids (HAA5) | Resolved | Jan 1, 2023 to Dec 31, 2023 |
| Combined Radium (-226 and -228) | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Gross Alpha, Excl. Radon and U | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| TTHM | Resolved | Jan 1, 2023 to Dec 31, 2023 |
| Public Notice | Resolved | Nov 13, 2022 to Nov 25, 2022 |
| Public Notice | Resolved | Nov 13, 2022 to Nov 25, 2022 |
| Public Notice | Resolved | Nov 13, 2022 to Nov 25, 2022 |
| Public Notice | Resolved | Nov 13, 2022 to Nov 25, 2022 |
| Public Notice | Resolved | Nov 13, 2022 to Nov 25, 2022 |
| Public Notice | Resolved | Nov 13, 2022 to Nov 25, 2022 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2022 to Nov 30, 2022 |
| Chlorine | Resolved | Nov 1, 2022 to Nov 30, 2022 |
| Revised Total Coliform Rule | Resolved | Oct 1, 2022 to Oct 31, 2022 |
| Chlorine | Resolved | Oct 1, 2022 to Oct 31, 2022 |
| Chlorine | Resolved | Sep 1, 2022 to Sep 30, 2022 |
| Revised Total Coliform Rule | Resolved | Sep 1, 2022 to Sep 30, 2022 |
| Consumer Confidence Rule | Resolved | Aug 10, 2022 to Nov 29, 2022 |
| Revised Total Coliform Rule | Resolved | Aug 1, 2022 to Aug 31, 2022 |
| Chlorine | Resolved | Aug 1, 2022 to Aug 31, 2022 |
| Lead and Copper Rule | Resolved | Jul 1, 2022 to Dec 31, 2022 |
| Combined Uranium | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Gross Alpha, Excl. Radon and U | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Combined Radium (-226 and -228) | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Revised Total Coliform Rule | Resolved | Jul 1, 2022 to Jul 31, 2022 |
| Consumer Confidence Rule | Resolved | Jul 1, 2022 to Nov 29, 2022 |
| Chlorine | Resolved | Jul 1, 2022 to Jul 31, 2022 |
| Revised Total Coliform Rule | Resolved | Jun 1, 2022 to Jun 30, 2022 |
| Chlorine | Resolved | Jun 1, 2022 to Jun 30, 2022 |
| Public Notice | Resolved | May 20, 2022 to Nov 10, 2022 |
| Revised Total Coliform Rule | Resolved | May 1, 2022 to May 31, 2022 |
| Chlorine | Resolved | May 1, 2022 to May 31, 2022 |
| Chlorine | Resolved | Apr 1, 2022 to Apr 30, 2022 |
| Revised Total Coliform Rule | Resolved | Apr 1, 2022 to Apr 30, 2022 |
| Combined Radium (-226 and -228) | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Combined Uranium | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Gross Alpha, Excl. Radon and U | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Revised Total Coliform Rule | Resolved | Mar 1, 2022 to Mar 31, 2022 |
| Chlorine | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Combined Uranium | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Lead and Copper Rule | Resolved | Oct 1, 2021 to Dec 31, 2022 |
| Total Haloacetic Acids (HAA5) | Resolved | Sep 1, 2021 to Aug 31, 2022 |
| TTHM | Resolved | Sep 1, 2021 to Aug 31, 2022 |
| Consumer Confidence Rule | Resolved | Aug 10, 2021 to Nov 25, 2022 |
| Consumer Confidence Rule | Resolved | Jul 1, 2021 to Nov 25, 2022 |
| Chlorine | Resolved | Mar 1, 2021 to Mar 31, 2021 |
| Revised Total Coliform Rule | Resolved | Mar 1, 2021 to Mar 31, 2021 |
| Revised Total Coliform Rule | Resolved | Feb 1, 2021 to Feb 28, 2021 |
| Chlorine | Resolved | Feb 1, 2021 to Feb 28, 2021 |
Hardness meter
What does nearby environmental evidence show?
91.9
PPM as CaCO₃
Moderately Hard
PPM
91.9
GPG
5.4
Regional environmental evidence
USGS hardness classification scale
91.9 PPM
Soft
0–60Moderate
61–120Hard
121–180Very hard
181+
0–60Moderate
61–120Hard
121–180Very hard
181+
Parts per million
91.9
mg/L as CaCO₃ equivalent
Grains per gallon
5.4
1 GPG ≈ 17.1 PPM
How to use regional evidence
These samples describe nearby environmental water. They cannot establish whether your tap water is soft or hard. Use a utility result or a tap test for appliance settings and treatment sizing.
USGS sites used
18
Nearest site
2.5 mi
Observation range
Aug 1, 2016–Jun 2, 2026
Regional evidence confidence
High
Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: POOTATUCK RIVER AT SANDY HOOK, CT (Stream).USGS source documentation ↗Evidence tier: Regional environmental evidence. This value is not used as proof of the serving utility's treated-water hardness.
Regional context
Is 06470 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Newtown median
92 PPM
About the same1 indexed ZIP readings · Range 91.9–91.9 PPM
Connecticut median
89 PPM
About the same98 indexed ZIP readings · Range 15.8–254 PPM
Evidence-first next steps
Confirm the problem before choosing treatment
This profile can help you ask the right question. It cannot select equipment for a property without a current result from the serving utility or the tap.
Confirm the serving system
ZIP boundaries and utility service areas do not perfectly match. Verify the system on a water bill before relying on system-wide records.
Read the current utility report
An active health-based record is present. Follow the utility's current notice and public-health instructions.
Find an official utility report →Test for the decision you face
Use a tap hardness test before sizing a softener. For health concerns, use a certified laboratory and the correct sampling protocol.
Convert your hardness test result →Frequently asked
Water questions for Newtown
Is tap water safe in Newtown?+
EPA ECHO reports 2 active health-based violations among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
How hard is the water?+
Utility-reported hardness is unavailable in this index. Regional samples do not establish tap-water hardness. Ask your provider or test your tap.
Do I need a water softener?+
Confirm hardness at your tap and consider actual scale or spotting before choosing treatment. Regional environmental values cannot determine whether you need a softener. A softener addresses hardness, not every contaminant.