Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Canaan, NH 03741
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Grafton County.
Historical measurement record needs context
- Largest possible serving system
- Canaan Water Dept
- Source water
- Surface water + Groundwater
- County
- Grafton 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
No active flag
0 active health-based records
Measurements by utility
Each result belongs to a specific system.
Utility match
4 systems
Serves 684 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.
Canaan Water Dept
NH0351010 · Surface water · 684 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 (3)
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
- 0.016 mg/L
- Action level
- 0.015 mg/L
107% of the listed benchmark
Monitoring period: Jan 1, 2016 to Dec 31, 2016
Copper (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- 3.25 mg/L
- Action level
- 1.3 mg/L
250% of the listed benchmark
Monitoring period: Jan 1, 2004 to Dec 31, 2004
TTHM
EPA SDWIS reported health-based violation
- Reported level
- 0.084 MG/L
- Maximum contaminant level
- 0.08 MG/L
105% of the listed benchmark
Monitoring period: Jan 1, 2022 to Mar 31, 2022
Violation history (19)
| Rule | Status | Period |
|---|---|---|
| Lead and Copper Rule | Resolved | Jan 1, 2026 to Jan 31, 2026 |
| TTHM | Resolved | Oct 1, 2024 to Jan 1, 2025 |
| Total Haloacetic Acids (HAA5) | Resolved | Oct 1, 2024 to Jan 1, 2025 |
| Revised Total Coliform Rule | Resolved | Aug 15, 2024 to Sep 3, 2024 |
| Revised Total Coliform Rule | Resolved | Jul 1, 2024 to Aug 1, 2024 |
| Public Notice | Unaddressed | Mar 2, 2023 |
| Public Notice | Unaddressed | Mar 2, 2023 |
| Public Notice | Resolved | Oct 19, 2022 to Nov 22, 2022 |
| Public Notice | Resolved | Oct 19, 2022 to Nov 22, 2022 |
| Lead and Copper Rule | Resolved | Oct 1, 2022 to Nov 17, 2022 |
| TTHM | Resolved | Oct 1, 2022 to Jan 1, 2023 |
| Total Haloacetic Acids (HAA5) | Resolved | Oct 1, 2022 to Jan 1, 2023 |
| Revised Total Coliform Rule | Resolved | Sep 8, 2022 to Oct 18, 2022 |
| Public Notice | Unaddressed | Aug 25, 2022 |
| Public Notice | Unaddressed | Aug 25, 2022 |
| Revised Total Coliform Rule | Resolved | Aug 1, 2022 to Sep 1, 2022 |
| Total Haloacetic Acids (HAA5) | Resolved | Apr 1, 2022 to Jul 1, 2022 |
| TTHM | Resolved | Apr 1, 2022 to Jul 1, 2022 |
| TTHMHealth-based | Resolved | Jan 1, 2022 to Mar 31, 2022 |
Cardigan Mountain Sch
NH0354010 · Groundwater · 300 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 (0)
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.
No comparable numerical result available
Federal SDWIS data does not provide a usable numerical result and benchmark for this profile. Missing data is not a pass. Check the serving utility's current Consumer Confidence Report.
Violation history (5)
| Rule | Status | Period |
|---|---|---|
| TTHM | Resolved | Jul 1, 2025 to Oct 1, 2025 |
| Total Haloacetic Acids (HAA5) | Resolved | Jul 1, 2025 to Oct 1, 2025 |
| TTHM | Resolved | Jan 1, 2025 to Apr 1, 2025 |
| Total Haloacetic Acids (HAA5) | Resolved | Jan 1, 2025 to Apr 1, 2025 |
| Lead and Copper Rule | Resolved | Oct 1, 2024 to Oct 16, 2024 |
Mascoma Valley Coop
NH0353020 · Groundwater · 73 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
- 0.026 mg/L
- Action level
- 0.015 mg/L
173% of the listed benchmark
Monitoring period: Jan 1, 2001 to Dec 31, 2001
Violation history (1)
| Rule | Status | Period |
|---|---|---|
| Lead and Copper Rule | Resolved | Jan 1, 2026 to Feb 27, 2025 |
Country Village Mhp
NH0353010 · Groundwater · 66 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
- Reported level
- 0.019 mg/L
- Action level
- 0.015 mg/L
127% of the listed benchmark
Monitoring period: Jan 1, 2001 to Dec 31, 2003
Combined Radium (-226 and -228)
EPA SDWIS reported health-based violation
- Reported level
- 6 PCI/L
- Maximum contaminant level
- 5 PCI/L
120% of the listed benchmark
Monitoring period: Jan 1, 2026 to Mar 31, 2026
Violation history (3)
| Rule | Status | Period |
|---|---|---|
| Combined Radium (-226 and -228)Health-based | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Combined Radium (-226 and -228)Health-based | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Combined Radium (-226 and -228)Health-based | Resolved | Apr 1, 2023 to Jun 30, 2023 |
Hardness estimate unavailable
No responsible local estimate yet
We did not find enough qualifying recent USGS hardness observations within 25 miles of this ZIP centroid. We leave the value blank instead of substituting a state average. Ask the serving utility or test the household tap for a property-specific result.
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
A reported action-level record needs context. Check its monitoring period and the utility's current report.
Find an official utility report →Test for the decision you face
Ask the utility for hardness or test at the tap. For health concerns, use a certified laboratory and targeted analysis.
Convert your hardness test result →Frequently asked
Water questions for Canaan
Is tap water safe in Canaan?+
EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.
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.