Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Alton, NH 03809
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Belknap County.
Historical measurement record needs context
- Largest possible serving system
- Alton Water Works
- Source water
- Groundwater
- County
- Belknap 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 1,800 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.
Alton Water Works
NH0061010 · Groundwater · 1,800 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
- 0.21 mg/L
- Action level
- 0.015 mg/L
1400% of the listed benchmark
Monitoring period: Jan 1, 2022 to Dec 31, 2024
Copper (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- 2.4 mg/L
- Action level
- 1.3 mg/L
185% of the listed benchmark
Monitoring period: Jan 1, 2022 to Dec 31, 2024
Violation history (1)
| Rule | Status | Period |
|---|---|---|
| Lead and Copper Rule | Unaddressed | Mar 31, 2026 |
Merrymeeting Mhp
NH0063020 · Groundwater · 265 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
- 0.022 mg/L
- Action level
- 0.015 mg/L
147% of the listed benchmark
Monitoring period: Jan 1, 2011 to Dec 31, 2011
Copper (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- 4.11 mg/L
- Action level
- 1.3 mg/L
316% of the listed benchmark
Monitoring period: Jan 1, 2011 to Dec 31, 2011
Violation history (0)
No record returned in this imported window. This is not a guarantee of tap-water safety.
Eagles Rest Mhp
NH0062010 · Groundwater · 138 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 (0)
No record returned in this imported window. This is not a guarantee of tap-water safety.
Lakeside At Winnipesaukee
NH0062050 · Groundwater · 85 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 (29)
| Rule | Status | Period |
|---|---|---|
| Public Notice | Resolved | Mar 7, 2023 to Apr 4, 2023 |
| Public Notice | Resolved | Mar 7, 2023 to Apr 4, 2023 |
| Arsenic | Resolved | Oct 1, 2022 to Dec 31, 2022 |
| Nitrate | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Arsenic | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Consumer Confidence Rule | Resolved | Jul 1, 2021 to Jul 22, 2021 |
| Nitrate | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Combined Uranium | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| cis-1,2-Dichloroethylene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Xylenes, Total | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| DICHLOROMETHANE | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| 1,1-Dichloroethylene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| trans-1,2-Dichloroethylene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| 1,2-Dichloroethane | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| 1,1,1-Trichloroethane | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Carbon tetrachloride | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| 1,2-Dichloropropane | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Trichloroethylene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| 1,1,2-Trichloroethane | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Benzene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Toluene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Ethylbenzene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Styrene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| 1,2,4-Trichlorobenzene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| CHLOROBENZENE | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| p-Dichlorobenzene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Vinyl chloride | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Tetrachloroethylene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| o-Dichlorobenzene | Resolved | Jan 1, 2021 to Dec 31, 2021 |
Hardness meter
What does nearby environmental evidence show?
41.6
PPM as CaCO₃
Soft
PPM
41.6
GPG
2.4
Regional environmental evidence
USGS hardness classification scale
41.6 PPM
Soft
0–60Moderate
61–120Hard
121–180Very hard
181+
0–60Moderate
61–120Hard
121–180Very hard
181+
Parts per million
41.6
mg/L as CaCO₃ equivalent
Grains per gallon
2.4
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
3
Nearest site
9.6 mi
Observation range
Jul 24, 2019–Jul 25, 2019
Regional evidence confidence
Low
Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: NH-B3W 11 (Well).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 03809 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Alton median
40 PPM
About the same2 indexed ZIP readings · Range 39.2–41.6 PPM
New Hampshire median
43 PPM
About the same75 indexed ZIP readings · Range 3.2–150 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
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
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 →Nearby indexed reports
More local profiles in Alton
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Alton
Is tap water safe in Alton?+
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.