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City water profile

Water hardness in Derry

Find official utility reports, understand hardness, and check the water system serving your home in Derry, New Hampshire.

Utility-reported hardness

Not yet available

Check your provider and source →
State comparison
Unavailable
Evidence comparison rank
—
Matched utilities
10
Active health records
0

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 →

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.

Derry Water Dept

NH0611010 · Surface water · 17,370 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: Jan 1, 2021 to Dec 31, 2023

Violation history (0)

No record returned in this imported window. This is not a guarantee of tap-water safety.

Drew Woods

NH0612150 · Surface water · 1,413 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.

Maple Hill Acres

NH0612020 · Surface water · 500 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.

Oakwood Terrace

NH0612010 · Surface water · 310 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.

Glen Ridge Dev

NH0612070 · Groundwater · 263 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.

Maple Haven

NH0612170 · Groundwater · 258 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.

Rand Shepard Hill

NH0612230 · 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 (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.

Hi And Lo Estates

NH0612140 · Surface water · 150 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.

Centennial Estates

NH0613060 · Groundwater · 140 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.

Nitrate

EPA SDWIS reported health-based violation

Reported violation
Reported level
11.6 MG/L
Maximum contaminant level
10 MG/L

116% of the listed benchmark

Monitoring period: Jul 1, 2023 to Sep 30, 2023

Violation history (1)
Imported violation history for Centennial Estates
RuleStatusPeriod
NitrateHealth-basedResolvedJul 1, 2023 to Sep 30, 2023

Annie Oakley Mhp

NH0613010 · Groundwater · 127 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 (7)
Imported violation history for Annie Oakley Mhp
RuleStatusPeriod
ArsenicResolvedOct 1, 2023 to Dec 31, 2023
E. COLIResolvedJan 11, 2023 to Feb 9, 2023
Revised Total Coliform RuleResolvedMay 10, 2022 to Jun 13, 2022
Lead and Copper RuleResolvedApr 1, 2022 to Apr 11, 2022
Revised Total Coliform RuleResolvedApr 1, 2022 to May 1, 2022
Revised Total Coliform RuleResolvedApr 1, 2021 to Jun 15, 2021
Revised Total Coliform RuleResolvedApr 1, 2021 to May 1, 2021

City summary

What the indexed records say

Derry has 2 published ZIP profiles across Rockingham County. The regional-evidence median is 74 PPM. The city does not meet the stricter comparison standard.

The 74–74 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard2 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

2 of 2 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
8.5 miles
Profiles with evidence
2/2

Confidence labels

High: 2Moderate: 0Low: 0

Observation window: Aug 4, 2016 to Sep 26, 2024.

ZIP directory

Water reports in Derry

Open a ZIP for site-level provenance and measurements.

Practical next steps

Move from index to evidence

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

Questions people ask

About water in Derry

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.