Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Knightdale, NC 27545
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Wake County.
2 active health-based record(s) across possible systems
- Largest possible serving system
- Rockbridge S/d
- Source water
- Groundwater
- County
- Wake 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
Review needed
2 active health-based records
Measurements by utility
Each result belongs to a specific system.
Utility match
10 systems
Serves 1,042 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.
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
- 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 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 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)
| 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
- 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
- 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 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)
| 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
- 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
- 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
- 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
- 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)
| 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
- 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
- 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 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 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)
| 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
- 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)
| 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
- 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)
| 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
- 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 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)
| 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
- 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
- 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)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Resolved | Jul 1, 2024 to Dec 10, 2024 |
Hardness meter
What does nearby environmental evidence show?
45.2
PPM as CaCO₃
Soft
PPM
45.2
GPG
2.6
Regional environmental evidence
USGS hardness classification scale
45.2 PPM
Soft
0–60Moderate
61–120Hard
121–180Very hard
181+
0–60Moderate
61–120Hard
121–180Very hard
181+
Parts per million
45.2
mg/L as CaCO₃ equivalent
Grains per gallon
2.6
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
18
Nearest site
2.9 mi
Observation range
Nov 26, 2019–Dec 21, 2019
Regional evidence confidence
Low
Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: WK-426 FARMWELL RD NEAR RALEIGH, NC BEDROCK (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 27545 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Knightdale median
45 PPM
About the same1 indexed ZIP readings · Range 45.2–45.2 PPM
North Carolina median
45 PPM
About the same247 indexed ZIP readings · Range 3.1–269 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
An active health-based record is present. Follow the utility's current notice and public-health instructions.
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 →Frequently asked
Water questions for Knightdale
Is tap water safe in Knightdale?+
EPA ECHO reports 2 active health-based violations among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
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.