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City water profile

Water hardness in Cary

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

Utility-reported hardness

Not yet available

Check your provider and source →
State comparison
7 PPM below
Evidence comparison rank
#3 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 →

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.

Cary, Town Of

NC0392020 · Surface water · 227,300 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 Cary, Town Of
RuleStatusPeriod
Public NoticeResolvedMay 10, 2023 to Feb 13, 2024
Revised Total Coliform RuleHealth-basedResolvedMay 1, 2023 to May 31, 2023

Medfield Estates S/d

NC0392160 · Groundwater · 772 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
0.0072 mg/L
Action level
0.015 mg/L

48% 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
3.95 mg/L
Action level
1.3 mg/L

304% of the listed benchmark

Monitoring period: Jan 1, 2010 to Dec 31, 2010

Violation history (2)
Imported violation history for Medfield Estates S/d
RuleStatusPeriod
Consumer Confidence RuleResolvedJul 1, 2024 to Jan 30, 2025
Revised Total Coliform RuleResolvedDec 11, 2023 to Dec 11, 2023

Mobile Estates

NC4392162 · Surface water · 690 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 Mobile Estates
RuleStatusPeriod
TTHMResolvedMar 1, 2021 to May 31, 2021
Total Haloacetic Acids (HAA5)ResolvedMar 1, 2021 to May 31, 2021

Swift Creek Master System

NC0392361 · Groundwater · 465 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 Swift Creek Master System
RuleStatusPeriod
Consumer Confidence RuleResolvedJul 1, 2024 to Dec 10, 2024

Sedgemoor S/d

NC4392102 · Groundwater · 435 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
0.0016 mg/L
Action level
0.015 mg/L

11% of the listed benchmark

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

Violation history (1)
Imported violation history for Sedgemoor S/d
RuleStatusPeriod
Consumer Confidence RuleResolvedJul 1, 2024 to Dec 12, 2024

Chatham Estates Mhp

NC4092069 · Surface water · 366 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 (0)

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

Wedgewood Square S/d

NC0392381 · Groundwater · 96 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 (7)
Imported violation history for Wedgewood Square S/d
RuleStatusPeriod
Consumer Confidence RuleResolvedJul 1, 2024 to Dec 17, 2024
2,4,5-TPResolvedJan 1, 2023 to Dec 31, 2025
DinosebResolvedJan 1, 2023 to Dec 31, 2025
PentachlorophenolResolvedJan 1, 2023 to Dec 31, 2025
PicloramResolvedJan 1, 2023 to Dec 31, 2025
DalaponResolvedJan 1, 2023 to Dec 31, 2025
2,4-DResolvedJan 1, 2023 to Dec 31, 2025

Greythorne S/d

NC4092021 · Groundwater · 94 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 Greythorne S/d
RuleStatusPeriod
Consumer Confidence RuleResolvedJul 1, 2024 to Dec 5, 2024
Revised Total Coliform RuleResolvedJan 11, 2024 to Feb 2, 2024

Olde South Trace Sd

NC4392131 · Groundwater · 76 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 Olde South Trace Sd
RuleStatusPeriod
Consumer Confidence RuleResolvedJul 1, 2024 to Dec 5, 2024
Revised Total Coliform RuleResolvedJan 11, 2024 to Feb 2, 2024

Harmony Glen S/d

NC4392229 · Groundwater · 74 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 Harmony Glen S/d
RuleStatusPeriod
Consumer Confidence RuleResolvedJul 1, 2024 to Jan 29, 2025

City summary

What the indexed records say

Cary has 4 published ZIP profiles across Wake County. The regional-evidence median is 43 PPM. Its comparison-eligible median is 43 PPM versus 50 PPM statewide.

Among the 6 North Carolinacities meeting the comparison standard, Cary ranks #3from highest to lowest. Across all 519 state ZIP profiles, available estimates run from 4.8to 256 PPM.

The 41.9–46.6 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft4 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

4 of 4 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
2.8 miles
Profiles with evidence
4/4

Confidence labels

High: 4Moderate: 0Low: 0

Observation window: Jul 12, 2016 to Jun 9, 2026.

ZIP directory

Water reports in Cary

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 Cary

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.