City water profile

Water hardness in Durham

Find official utility reports, understand hardness, and check the water system serving your home in Durham, North Carolina.

Utility-reported hardness

Not yet available

Check your provider and source →

State comparison: 9 PPM below
Evidence comparison rank: #5 of 6
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 →

Convert a hardness result →Test your tap →

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.

Durham, City Of

NC0332010 · Surface water · 333,490 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, 2023 to Dec 31, 2025

Violation history (2)

Imported violation history for Durham, City Of
Rule	Status	Period
Revised Total Coliform Rule	Resolved	Feb 11, 2023 to Feb 14, 2023
Consumer Confidence Rule	Resolved	Jul 1, 2021 to Oct 14, 2021

Hardscrabble S/d

NC0332139 · Groundwater · 643 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, 2023 to Dec 31, 2025

Violation history (1)

Imported violation history for Hardscrabble S/d
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Jan 29, 2025

Greymoss S/d

NC0332111 · Groundwater · 361 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

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2026 to Jun 30, 2026

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 1.694 mg/L
Action level: 1.3 mg/L

130% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2023

Violation history (1)

Imported violation history for Greymoss S/d
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Dec 3, 2024

Willow Hill S/d

NC0332119 · Groundwater · 329 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

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2025

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 1.51 mg/L
Action level: 1.3 mg/L

116% of the listed benchmark

Monitoring period: Jul 1, 1993 to Dec 31, 1993

Violation history (1)

Imported violation history for Willow Hill S/d
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Dec 17, 2024

Birchwood Mhp

NC0368105 · Groundwater · 312 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: 0.003 mg/L
Action level: 0.015 mg/L

20% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2025

Violation history (4)

Imported violation history for Birchwood Mhp
Rule	Status	Period
Revised Total Coliform Rule	Resolved	Jan 11, 2024 to Feb 6, 2024
Revised Total Coliform Rule	Resolved	Feb 1, 2023 to Feb 28, 2023
Lead and Copper Rule	Resolved	Jan 1, 2022 to Mar 31, 2022
Consumer Confidence Rule	Resolved	Jul 1, 2021 to Nov 11, 2021

Whispering Pines Mhp

NC0332106 · Groundwater · 305 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, 2021

Violation history (104)

Imported violation history for Whispering Pines Mhp
Rule	Status	Period
Public Notice	Addressed	Feb 15, 2026
Public Notice	Addressed	Feb 15, 2026
Public Notice	Addressed	Feb 15, 2026
Revised Total Coliform Rule	Resolved	Nov 1, 2025 to Nov 30, 2025
Lead and Copper Rule	Addressed	Oct 1, 2025
E. COLI	Resolved	Aug 6, 2025 to Dec 1, 2025
Public Notice	Addressed	Jul 4, 2025
Consumer Confidence Rule	Addressed	Jul 1, 2025
Nitrate	Archived	Jan 1, 2025 to Dec 31, 2025
Nitrate	Archived	Jan 1, 2025 to Dec 31, 2025
Nitrate	Archived	Jan 1, 2025 to Dec 31, 2025
LEAD AND COPPER RULE REVISIONSHealth-based	Resolved	Oct 17, 2024 to Mar 14, 2025
LEAD AND COPPER RULE REVISIONS	Resolved	Oct 17, 2024 to Mar 14, 2025
Consumer Confidence Rule	Addressed	Jul 1, 2024
Revised Total Coliform Rule	Resolved	May 11, 2024 to May 15, 2024
Arsenic	Resolved	Jan 1, 2024 to Dec 31, 2024
Cadmium	Resolved	Jan 1, 2024 to Dec 31, 2024
CYANIDE	Resolved	Jan 1, 2024 to Dec 31, 2024
Nickel	Resolved	Jan 1, 2024 to Dec 31, 2024
Antimony, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Beryllium, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Selenium	Resolved	Jan 1, 2024 to Dec 31, 2024
Arsenic	Resolved	Jan 1, 2024 to Dec 31, 2024
Barium	Resolved	Jan 1, 2024 to Dec 31, 2024
Cadmium	Resolved	Jan 1, 2024 to Dec 31, 2024
Chromium	Resolved	Jan 1, 2024 to Dec 31, 2024
CYANIDE	Resolved	Jan 1, 2024 to Dec 31, 2024
Mercury	Resolved	Jan 1, 2024 to Dec 31, 2024
Beryllium, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Selenium	Resolved	Jan 1, 2024 to Dec 31, 2024
Barium	Resolved	Jan 1, 2024 to Dec 31, 2024
Cadmium	Resolved	Jan 1, 2024 to Dec 31, 2024
CYANIDE	Resolved	Jan 1, 2024 to Dec 31, 2024
Nickel	Resolved	Jan 1, 2024 to Dec 31, 2024
Nitrate	Archived	Jan 1, 2024 to Dec 31, 2024
Antimony, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Selenium	Resolved	Jan 1, 2024 to Dec 31, 2024
Thallium, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Chromium	Resolved	Jan 1, 2024 to Dec 31, 2024
Mercury	Resolved	Jan 1, 2024 to Dec 31, 2024
Fluoride	Resolved	Jan 1, 2024 to Dec 31, 2024
Thallium, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Fluoride	Resolved	Jan 1, 2024 to Dec 31, 2024
Beryllium, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Thallium, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Arsenic	Resolved	Jan 1, 2024 to Dec 31, 2024
Barium	Resolved	Jan 1, 2024 to Dec 31, 2024
Fluoride	Resolved	Jan 1, 2024 to Dec 31, 2024
Mercury	Resolved	Jan 1, 2024 to Dec 31, 2024
Chromium	Resolved	Jan 1, 2024 to Dec 31, 2024
Nitrate	Archived	Jan 1, 2024 to Dec 31, 2024
Nitrate	Archived	Jan 1, 2024 to Dec 31, 2024
Antimony, Total	Resolved	Jan 1, 2024 to Dec 31, 2024
Nickel	Resolved	Jan 1, 2024 to Dec 31, 2024
E. COLI	Addressed	Sep 6, 2023
Revised Total Coliform Rule	Resolved	Aug 11, 2023 to Aug 14, 2023
Consumer Confidence Rule	Addressed	Jul 1, 2023
Arsenic	Resolved	Jan 1, 2023 to Dec 31, 2023
Barium	Resolved	Jan 1, 2023 to Dec 31, 2023
CYANIDE	Resolved	Jan 1, 2023 to Dec 31, 2023
Antimony, Total	Resolved	Jan 1, 2023 to Dec 31, 2023
Thallium, Total	Resolved	Jan 1, 2023 to Dec 31, 2023
Selenium	Resolved	Jan 1, 2023 to Dec 31, 2023
Cadmium	Resolved	Jan 1, 2023 to Dec 31, 2023
Beryllium, Total	Resolved	Jan 1, 2023 to Dec 31, 2023
Thallium, Total	Resolved	Jan 1, 2023 to Dec 31, 2023
Selenium	Resolved	Jan 1, 2023 to Dec 31, 2023
Arsenic	Resolved	Jan 1, 2023 to Dec 31, 2023
Chromium	Resolved	Jan 1, 2023 to Dec 31, 2023
Fluoride	Resolved	Jan 1, 2023 to Dec 31, 2023
Mercury	Resolved	Jan 1, 2023 to Dec 31, 2023
Antimony, Total	Resolved	Jan 1, 2023 to Dec 31, 2023
Beryllium, Total	Resolved	Jan 1, 2023 to Dec 31, 2023
Selenium	Resolved	Jan 1, 2023 to Dec 31, 2023
Cadmium	Resolved	Jan 1, 2023 to Dec 31, 2023
Mercury	Resolved	Jan 1, 2023 to Dec 31, 2023
Nickel	Resolved	Jan 1, 2023 to Dec 31, 2023
Fluoride	Resolved	Jan 1, 2023 to Dec 31, 2023
CYANIDE	Resolved	Jan 1, 2023 to Dec 31, 2023
Beryllium, Total	Resolved	Jan 1, 2023 to Dec 31, 2023
Chromium	Resolved	Jan 1, 2023 to Dec 31, 2023
CYANIDE	Resolved	Jan 1, 2023 to Dec 31, 2023
Barium	Resolved	Jan 1, 2023 to Dec 31, 2023
Mercury	Resolved	Jan 1, 2023 to Dec 31, 2023
Barium	Resolved	Jan 1, 2023 to Dec 31, 2023
Thallium, Total	Resolved	Jan 1, 2023 to Dec 31, 2023
Chromium	Resolved	Jan 1, 2023 to Dec 31, 2023
Nickel	Resolved	Jan 1, 2023 to Dec 31, 2023
Antimony, Total	Resolved	Jan 1, 2023 to Dec 31, 2023
Fluoride	Resolved	Jan 1, 2023 to Dec 31, 2023
Arsenic	Resolved	Jan 1, 2023 to Dec 31, 2023
Nickel	Resolved	Jan 1, 2023 to Dec 31, 2023
Cadmium	Resolved	Jan 1, 2023 to Dec 31, 2023
Consumer Confidence Rule	Resolved	Jul 1, 2022 to Nov 9, 2022
Public Notice	Resolved	Feb 10, 2022 to Jun 1, 2022
Nitrate	Resolved	Jan 1, 2022 to Dec 31, 2022
Nitrate	Resolved	Jan 1, 2022 to Dec 31, 2022
Nitrate	Resolved	Jan 1, 2022 to Dec 31, 2022
Lead and Copper Rule	Addressed	Jan 1, 2022
Consumer Confidence Rule	Addressed	Jul 1, 2021
Lead and Copper Rule	Addressed	Oct 1, 2020
Lead and Copper Rule	Addressed	Oct 1, 2019
Consumer Confidence Rule	Addressed	Jul 1, 2019
Lead and Copper Rule	Addressed	Oct 1, 2007

Canterbury Estates

NC0332122 · Groundwater · 293 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: 0.0027 mg/L
Action level: 0.015 mg/L

18% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2025

Violation history (1)

Imported violation history for Canterbury Estates
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Dec 3, 2024

Fox Run S/d

NC0332116 · Groundwater · 272 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: 0.006 mg/L
Action level: 0.015 mg/L

40% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2025

Violation history (0)

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

Heather Glen S/d

NC0332121 · Groundwater · 255 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, 2023 to Dec 31, 2025

Violation history (1)

Imported violation history for Heather Glen S/d
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Jan 2, 2025

Maple Ridge Mhp

NC0368122 · Groundwater · 216 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, 2023 to Dec 31, 2025

Violation history (4)

Imported violation history for Maple Ridge Mhp
Rule	Status	Period
Chlorine	Resolved	Feb 1, 2026 to Feb 28, 2026
Revised Total Coliform Rule	Resolved	Feb 1, 2026 to Feb 28, 2026
Consumer Confidence Rule	Resolved	Jul 1, 2025 to Nov 10, 2025
Lead and Copper Rule	Addressed	Jan 1, 2025

City summary

What the indexed records say

Durham has 10 published ZIP profiles across Durham County. The regional-evidence median is 41 PPM. Its comparison-eligible median is 41 PPM versus 50 PPM statewide.

Among the 6 North Carolinacities meeting the comparison standard, Durham ranks #5from highest to lowest. Across all 519 state ZIP profiles, available estimates run from 4.8to 256 PPM.

The 40.5–55.4 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft10 ZIPs

Moderately hard0 ZIPs

Hard0 ZIPs

Very hard0 ZIPs

10 of 10 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 3.7 miles
Profiles with evidence: 10/10

Confidence labels

High: 10Moderate: 0Low: 0

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

Continue comparing

Other North Carolina communities

Carrboro

Orange County

41 PPM median

Apex

Wake County

42 PPM median

Edenton

Chowan County

40 PPM median

Hertford

Perquimans County

40 PPM median

Pittsboro

Chatham County

39 PPM median

Cary

Wake County

43 PPM median

Search all 381 North Carolina cities →

Questions people ask

About water in Durham

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.