Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationRegional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Belknap County.
Your tap water
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
EPA quarter 2026Q2
Utility-reported hardness
Unavailable
Ask your provider or test your tap
All possible systems
No active flag
0 active health-based records
Measurements by utility
Each result belongs to a specific system.
Utility match
2 systems
Serves 600 people system-wide
Match the name on your water bill
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.
NH1691010 · Surface water · 600 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 →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.
EPA SDWIS Lead and Copper Rule samples
153% of the listed benchmark
Monitoring period: Jul 1, 2020 to Dec 31, 2020
EPA SDWIS Lead and Copper Rule samples
135% of the listed benchmark
Monitoring period: Jan 1, 2019 to Jun 30, 2019
EPA SDWIS reported health-based violation
135% of the listed benchmark
Monitoring period: Jan 1, 2026 to Mar 31, 2026
EPA SDWIS reported health-based violation
106% of the listed benchmark
Monitoring period: Jul 1, 2025 to Sep 30, 2025
| Rule | Status | Period |
|---|---|---|
| Public Notice | Unaddressed | Feb 26, 2026 |
| Total Haloacetic Acids (HAA5)Health-based | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Total Haloacetic Acids (HAA5)Health-based | Archived | Oct 1, 2025 to Dec 31, 2025 |
| Total Haloacetic Acids (HAA5)Health-based | Archived | Jul 1, 2025 to Sep 30, 2025 |
| TTHMHealth-based | Archived | Jul 1, 2025 to Sep 30, 2025 |
| Lead and Copper Rule | Resolved | Apr 1, 2025 to Apr 2, 2025 |
| Surface Water Treatment RuleHealth-based | Resolved | Jan 1, 2025 to Jan 22, 2025 |
| TTHMHealth-based | Archived | Jan 1, 2025 to Mar 31, 2025 |
| TTHMHealth-based | Archived | Oct 1, 2024 to Dec 31, 2024 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Public Notice | Unaddressed | Aug 28, 2024 |
| Public Notice | Unaddressed | Aug 28, 2024 |
| TTHMHealth-based | Archived | Jul 1, 2024 to Sep 30, 2024 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Public Notice | Unaddressed | Jun 2, 2024 |
| Public Notice | Unaddressed | Jun 2, 2024 |
| TTHMHealth-based | Archived | Apr 1, 2024 to Jun 30, 2024 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| TTHMHealth-based | Archived | Jan 1, 2024 to Mar 31, 2024 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| TTHMHealth-based | Archived | Oct 1, 2023 to Dec 31, 2023 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| TTHMHealth-based | Archived | Jul 1, 2023 to Sep 30, 2023 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Surface Water Treatment RuleHealth-based | Resolved | Jul 1, 2022 to Aug 1, 2022 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Jul 1, 2022 to Sep 30, 2022 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Lead and Copper Rule | Resolved | Apr 1, 2022 to Apr 1, 2022 |
| TTHMHealth-based | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| TTHMHealth-based | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| TTHMHealth-based | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Lead and Copper RuleHealth-based | Resolved | Jul 17, 2021 to May 4, 2022 |
| Lead and Copper Rule | Resolved | Jul 11, 2021 to Jul 16, 2021 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Lead and Copper Rule | Resolved | Jan 11, 2021 to Jan 14, 2021 |
| Total Haloacetic Acids (HAA5)Health-based | Resolved | Jan 1, 2021 to Mar 31, 2021 |
| Public Notice | Unaddressed | Jan 5, 2010 |
| Public Notice | Unaddressed | Dec 23, 2008 |
| Public Notice | Unaddressed | Nov 5, 2008 |
NH1692030 · 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 →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.
| Rule | Status | Period |
|---|---|---|
| Public Notice | Resolved | Apr 28, 2022 to May 3, 2022 |
| Public Notice | Resolved | Apr 28, 2022 to May 3, 2022 |
| Revised Total Coliform RuleHealth-based | Resolved | Mar 5, 2022 to Mar 24, 2022 |
| Revised Total Coliform Rule | Resolved | Mar 5, 2022 to Mar 24, 2022 |
| Revised Total Coliform RuleHealth-based | Resolved | Oct 21, 2021 to Oct 26, 2021 |
| Revised Total Coliform Rule | Resolved | Oct 21, 2021 to Oct 26, 2021 |
| Consumer Confidence Rule | Resolved | Jul 1, 2021 to Aug 13, 2021 |
Hardness estimate unavailable
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
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.
ZIP boundaries and utility service areas do not perfectly match. Verify the system on a water bill before relying on system-wide records.
A reported action-level record needs context. Check its monitoring period and the utility's current report.
Find an official utility report →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
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.
Utility-reported hardness is unavailable in this index. Regional samples do not establish tap-water hardness. Ask your provider or test your tap.
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.