City water profile

Water hardness in Knightdale

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

Utility-reported hardness

Not yet available

Check your provider and source →

State comparison: Unavailable
Evidence comparison rank: —
Matched utilities: 10
Active health records: 2

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.

Rockbridge S/d

NC4092073 · Groundwater · 1,042 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

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

Gross Alpha, Excl. Radon and U

EPA SDWIS reported health-based violation

Reported violation

Reported level: 359 PCI/L
Maximum contaminant level: 15 PCI/L

2393% of the listed benchmark

Monitoring period: Jan 1, 2026 to Mar 31, 2026

Combined Uranium

EPA SDWIS reported health-based violation

Reported violation

Reported level: 55.6 PCI/L
Maximum contaminant level: 30 PCI/L

185% of the listed benchmark

Monitoring period: Jan 1, 2026 to Mar 31, 2026

Violation history (31)

Imported violation history for Rockbridge S/d
Rule	Status	Period
Public Notice	Addressed	Mar 2, 2026
Public Notice	Addressed	Mar 2, 2026
Revised Total Coliform Rule	Archived	Feb 1, 2026 to Feb 28, 2026
Chlorine	Resolved	Feb 1, 2026 to Feb 28, 2026
Revised Total Coliform Rule	Archived	Jan 1, 2026 to Jan 31, 2026
Gross Alpha, Excl. Radon and UHealth-based	Archived	Jan 1, 2026 to Mar 31, 2026
Combined UraniumHealth-based	Archived	Jan 1, 2026 to Mar 31, 2026
Revised Total Coliform Rule	Archived	Dec 1, 2025 to Dec 31, 2025
Chlorine	Resolved	Dec 1, 2025 to Dec 31, 2025
Chlorine	Resolved	Nov 1, 2025 to Nov 30, 2025
Revised Total Coliform Rule	Archived	Nov 1, 2025 to Nov 30, 2025
Gross Alpha, Excl. Radon and UHealth-based	Archived	Oct 1, 2025 to Dec 31, 2025
Combined UraniumHealth-based	Archived	Oct 1, 2025 to Dec 31, 2025
Consumer Confidence Rule	Addressed	Jul 1, 2025
Revised Total Coliform Rule	Resolved	Mar 1, 2025 to Mar 31, 2025
Chlorine	Resolved	Mar 1, 2025 to Mar 31, 2025
Chlorine	Resolved	Feb 1, 2025 to Feb 28, 2025
Revised Total Coliform Rule	Resolved	Feb 1, 2025 to Feb 28, 2025
Revised Total Coliform Rule	Resolved	Jan 1, 2025 to Jan 31, 2025
Chlorine	Resolved	Jan 1, 2025 to Jan 31, 2025
Total Haloacetic Acids (HAA5)	Archived	Jan 1, 2025 to Dec 31, 2025
TTHM	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 Feb 19, 2025
LEAD AND COPPER RULE REVISIONS	Resolved	Oct 17, 2024 to Feb 19, 2025
Consumer Confidence Rule	Addressed	Jul 1, 2024
Lead and Copper Rule	Resolved	Jan 1, 2024 to Feb 8, 2024
Revised Total Coliform Rule	Resolved	Jul 11, 2023 to Jul 31, 2023
TTHM	Resolved	Aug 1, 2021 to Jul 31, 2022
Total Haloacetic Acids (HAA5)	Resolved	Aug 1, 2021 to Jul 31, 2022
Public Notice	Addressed	Sep 5, 2015

Amber Acres North S/d

NC0392346 · Groundwater · 752 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

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: 1.396 mg/L
Action level: 1.3 mg/L

107% of the listed benchmark

Monitoring period: Jan 1, 2011 to Dec 31, 2013

Combined Uranium

EPA SDWIS reported health-based violation

Reported violation

Reported level: 23.1 PCI/L
Maximum contaminant level: 30 PCI/L

77% of the listed benchmark

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

Violation history (4)

Imported violation history for Amber Acres North S/d
Rule	Status	Period
Combined UraniumHealth-based	Resolved	Jul 1, 2023 to Sep 30, 2023
Combined UraniumHealth-based	Resolved	Apr 1, 2023 to Jun 30, 2023
Combined UraniumHealth-based	Resolved	Jan 1, 2023 to Mar 31, 2023
Combined UraniumHealth-based	Resolved	Oct 1, 2022 to Dec 31, 2022

Amber Ridge S/d

NC4392182 · Groundwater · 742 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: 0.0032 mg/L
Action level: 0.015 mg/L

21% 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.

Sandy Trail S/d

NC0392077 · Groundwater · 739 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: 1.49 mg/L
Action level: 1.3 mg/L

115% of the listed benchmark

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

Violation history (0)

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

Rutledge Landing S/d

NC4392228 · Groundwater · 713 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 Rutledge Landing S/d
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Jan 2, 2025
Revised Total Coliform Rule	Resolved	Jun 11, 2024 to Jul 11, 2024

Ashley Hills North S/d

NC0392341 · Groundwater · 602 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

2 reported active health-based record(s) for this system

Find this utility’s official report →

Measurements (4)

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: 1.667 mg/L
Action level: 1.3 mg/L

128% of the listed benchmark

Monitoring period: Jan 1, 2017 to Dec 31, 2019

Gross Alpha, Excl. Radon and U

EPA SDWIS reported health-based violation

Reported violation

Reported level: 33 PCI/L
Maximum contaminant level: 15 PCI/L

220% of the listed benchmark

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

Combined Uranium

EPA SDWIS reported health-based violation

Reported violation

Reported level: 33.1 PCI/L
Maximum contaminant level: 30 PCI/L

110% of the listed benchmark

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

Violation history (4)

Imported violation history for Ashley Hills North S/d
Rule	Status	Period
Gross Alpha, Excl. Radon and UHealth-based	Addressed	Apr 1, 2026 to Jun 30, 2026
Combined UraniumHealth-based	Addressed	Apr 1, 2026 to Jun 30, 2026
Gross Alpha, Excl. Radon and UHealth-based	Archived	Jan 1, 2026 to Mar 31, 2026
Combined UraniumHealth-based	Archived	Jan 1, 2026 to Mar 31, 2026

Baywood Forest S/d

NC0392218 · Groundwater · 533 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 (6)

Imported violation history for Baywood Forest S/d
Rule	Status	Period
Lead and Copper Rule	Resolved	Jan 1, 2025 to Aug 11, 2025
Nitrate	Resolved	Jan 1, 2025 to Mar 31, 2025
Lead and Copper Rule	Addressed	Oct 1, 2024
Revised Total Coliform Rule	Resolved	Aug 1, 2024 to Aug 31, 2024
Chlorine	Resolved	Aug 1, 2024 to Aug 31, 2024
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Nov 14, 2024

Barclay Downs S/d

NC0392211 · Groundwater · 459 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: 0.0065 mg/L
Action level: 0.015 mg/L

43% of the listed benchmark

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

Violation history (1)

Imported violation history for Barclay Downs S/d
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Jan 28, 2025

Ridgehaven S/d

NC0392184 · Groundwater · 455 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

Combined Uranium

EPA SDWIS reported health-based violation

Reported violation

Reported level: 23.8 PCI/L
Maximum contaminant level: 30 PCI/L

79% of the listed benchmark

Monitoring period: Oct 1, 2024 to Dec 31, 2024

Violation history (3)

Imported violation history for Ridgehaven S/d
Rule	Status	Period
Combined UraniumHealth-based	Resolved	Oct 1, 2024 to Dec 31, 2024
Combined UraniumHealth-based	Resolved	Jul 1, 2024 to Sep 30, 2024
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Dec 10, 2024

Ashley Hills S/d

NC0392318 · Groundwater · 453 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: 1.4 mg/L
Action level: 1.3 mg/L

108% of the listed benchmark

Monitoring period: Jan 1, 1997 to Jun 30, 1997

Violation history (1)

Imported violation history for Ashley Hills S/d
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Dec 10, 2024

City summary

What the indexed records say

Knightdale has 1 published ZIP profile across Wake County. The regional-evidence median is 45 PPM. The city does not meet the stricter comparison standard.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft1 ZIP

Moderately hard0 ZIPs

Hard0 ZIPs

Very hard0 ZIPs

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 2.9 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Nov 26, 2019 to Dec 21, 2019.

ZIP directory

Water reports in Knightdale

Open a ZIP for site-level provenance and measurements.

ZIP code

27545

Soft

45.2 PPM

Nearest site: 2.9 mi
Confidence: Low

View full ZIP evidence →

Practical next steps

Move from index to evidence

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

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Wake County

42 PPM median

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44 PPM median

Holly Springs

Wake County

39 PPM median

Raleigh

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47 PPM median

Rolesville

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45 PPM median

Search all 381 North Carolina cities →

Questions people ask

About water in Knightdale

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.