Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Stuart, FL 34994
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Martin County.
5 active health-based record(s) across possible systems
- Largest possible serving system
- Stuart, City Of - Water Plant
- Source water
- Groundwater
- County
- Martin 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
5 active health-based records
Measurements by utility
Each result belongs to a specific system.
Utility match
7 systems
Serves 16,841 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.
Stuart, City Of - Water Plant
FL4430259 · Groundwater · 16,841 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
- 0.0012 mg/L
- Action level
- 0.015 mg/L
8% of the listed benchmark
Monitoring period: Jan 1, 2025 to Dec 1, 2025
Violation history (22)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Unaddressed | Jul 1, 2025 |
| Revised Total Coliform Rule | Unaddressed | Apr 1, 2025 |
| Revised Total Coliform Rule | Archived | Feb 1, 2025 to Feb 28, 2025 |
| Revised Total Coliform Rule | Archived | Jan 1, 2025 to Jan 31, 2025 |
| Revised Total Coliform Rule | Archived | Dec 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Archived | Nov 1, 2024 to Nov 30, 2024 |
| Revised Total Coliform Rule | Archived | Oct 1, 2024 to Oct 31, 2024 |
| Revised Total Coliform Rule | Archived | Sep 1, 2024 to Sep 30, 2024 |
| Revised Total Coliform Rule | Archived | Aug 1, 2024 to Aug 31, 2024 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2024 |
| TTHM | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Archived | Jan 1, 2024 to Jan 31, 2024 |
| Total Haloacetic Acids (HAA5) | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Archived | Dec 1, 2023 to Dec 31, 2023 |
| Revised Total Coliform Rule | Resolved | May 1, 2023 to May 31, 2023 |
| Revised Total Coliform Rule | Resolved | Apr 1, 2023 to Apr 30, 2023 |
| Nitrate | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Total Haloacetic Acids (HAA5) | Archived | Jan 1, 2023 to Dec 31, 2023 |
| TTHM | Archived | Jan 1, 2023 to Dec 31, 2023 |
| Lead and Copper Rule | Unaddressed | Jan 1, 2023 |
| TTHM | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Total Haloacetic Acids (HAA5) | Resolved | Jan 1, 2022 to Mar 31, 2022 |
Sailfish Point
FL4434000 · Groundwater · 1,145 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
- 4.0e-4 mg/L
- Action level
- 0.015 mg/L
3% of the listed benchmark
Monitoring period: Jan 1, 2024 to Dec 1, 2024
Violation history (14)
| Rule | Status | Period |
|---|---|---|
| E. COLI | Archived | Jan 1, 2025 to Jan 31, 2025 |
| Revised Total Coliform Rule | Archived | Jan 1, 2025 to Jan 31, 2025 |
| E. COLI | Archived | Dec 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Archived | Dec 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Archived | Nov 1, 2024 to Nov 30, 2024 |
| E. COLI | Archived | Nov 1, 2024 to Nov 30, 2024 |
| Revised Total Coliform Rule | Archived | Oct 1, 2024 to Oct 31, 2024 |
| E. COLI | Archived | Oct 1, 2024 to Oct 31, 2024 |
| E. COLI | Archived | Sep 1, 2024 to Sep 30, 2024 |
| Revised Total Coliform Rule | Archived | Sep 1, 2024 to Sep 30, 2024 |
| Nitrate | Archived | Jan 1, 2024 to Dec 31, 2024 |
| TTHM | Archived | Jan 1, 2023 to Dec 31, 2024 |
| Total Haloacetic Acids (HAA5) | Archived | Jan 1, 2023 to Dec 31, 2024 |
| Lead and Copper Rule | Unaddressed | Jan 1, 2022 |
St. Lucie Falls
FL4434014 · Groundwater · 499 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
1 reported active health-based record(s) for this system
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
- 2.0e-4 mg/L
- Action level
- 0.015 mg/L
1% of the listed benchmark
Monitoring period: Jan 1, 2024 to Dec 1, 2024
Violation history (16)
| Rule | Status | Period |
|---|---|---|
| Revised Total Coliform Rule | Resolved | Apr 1, 2025 to Apr 30, 2025 |
| Revised Total Coliform Rule | Resolved | Mar 1, 2025 to Mar 31, 2025 |
| LEAD AND COPPER RULE REVISIONS | Unaddressed | Feb 1, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Unaddressed | Feb 1, 2025 |
| Revised Total Coliform Rule | Resolved | Jan 1, 2025 to Jan 31, 2025 |
| Revised Total Coliform Rule | Resolved | Dec 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2024 to Nov 30, 2024 |
| Revised Total Coliform Rule | Resolved | Oct 1, 2024 to Oct 31, 2024 |
| Revised Total Coliform Rule | Resolved | Sep 1, 2024 to Sep 30, 2024 |
| Total Haloacetic Acids (HAA5) | Archived | Jan 1, 2024 to Dec 31, 2024 |
| TTHM | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Resolved | Sep 1, 2022 to Sep 30, 2022 |
| TTHM | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Asbestos | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Total Haloacetic Acids (HAA5) | Resolved | Jan 1, 2021 to Dec 31, 2021 |
| Lead and Copper Rule | Unaddressed | Jan 1, 2016 |
Natalie Estates Mobile Home Pk #200
FL4430956 · Groundwater · 250 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
1 reported active health-based record(s) for this system
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
- 0.0022 mg/L
- Action level
- 0.015 mg/L
15% of the listed benchmark
Monitoring period: Jan 1, 2025 to Dec 1, 2025
Violation history (25)
| Rule | Status | Period |
|---|---|---|
| Revised Total Coliform Rule | Archived | Feb 1, 2025 to Feb 28, 2025 |
| E. COLI | Archived | Feb 1, 2025 to Feb 28, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Unaddressed | Feb 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | Unaddressed | Feb 1, 2025 |
| E. COLI | Archived | Jan 1, 2025 to Jan 31, 2025 |
| Revised Total Coliform Rule | Archived | Jan 1, 2025 to Jan 31, 2025 |
| Revised Total Coliform Rule | Archived | Dec 1, 2024 to Dec 31, 2024 |
| E. COLI | Archived | Dec 1, 2024 to Dec 31, 2024 |
| E. COLI | Archived | Nov 1, 2024 to Nov 30, 2024 |
| Revised Total Coliform Rule | Archived | Nov 1, 2024 to Nov 30, 2024 |
| Revised Total Coliform Rule | Archived | Oct 1, 2024 to Oct 31, 2024 |
| E. COLI | Archived | Oct 1, 2024 to Oct 31, 2024 |
| E. COLI | Archived | Sep 1, 2024 to Sep 30, 2024 |
| Revised Total Coliform Rule | Archived | Sep 1, 2024 to Sep 30, 2024 |
| E. COLI | Archived | Aug 1, 2024 to Aug 31, 2024 |
| Revised Total Coliform Rule | Archived | Aug 1, 2024 to Aug 31, 2024 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2024 |
| Nitrate | Archived | Jan 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2023 to Nov 30, 2023 |
| E. COLI | Resolved | Nov 1, 2023 to Nov 30, 2023 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2023 |
| Nitrate | Resolved | Jan 1, 2023 to Dec 31, 2023 |
| Nitrate | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Lead and Copper Rule | Unaddressed | Jan 1, 2021 |
| Lead and Copper Rule | Unaddressed | Jan 1, 2020 |
South Fork Homeowner Util Corp
FL4430484 · Groundwater · 200 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
1 reported active health-based record(s) for this system
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, 2025 to Dec 1, 2025
Violation history (27)
| Rule | Status | Period |
|---|---|---|
| Revised Total Coliform Rule | Archived | Sep 1, 2025 to Sep 30, 2025 |
| Revised Total Coliform Rule | Resolved | Aug 1, 2025 to Aug 31, 2025 |
| Consumer Confidence Rule | Resolved | Jul 1, 2025 to Jan 8, 2026 |
| Revised Total Coliform Rule | Resolved | May 1, 2025 to May 31, 2025 |
| Revised Total Coliform Rule | Resolved | Apr 1, 2025 to Apr 30, 2025 |
| Revised Total Coliform Rule | Resolved | Mar 1, 2025 to Mar 31, 2025 |
| Revised Total Coliform Rule | Resolved | Feb 1, 2025 to Feb 28, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Unaddressed | Feb 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | Unaddressed | Feb 1, 2025 |
| Revised Total Coliform Rule | Resolved | Jan 1, 2025 to Jan 31, 2025 |
| Revised Total Coliform Rule | Resolved | Dec 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2024 to Nov 30, 2024 |
| Revised Total Coliform Rule | Resolved | Oct 1, 2024 to Oct 31, 2024 |
| Revised Total Coliform Rule | Resolved | Sep 1, 2024 to Sep 30, 2024 |
| Revised Total Coliform Rule | Resolved | Aug 1, 2024 to Aug 31, 2024 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2024 |
| Revised Total Coliform Rule | Resolved | Jun 1, 2024 to Jun 30, 2024 |
| Revised Total Coliform Rule | Resolved | May 1, 2024 to May 31, 2024 |
| Revised Total Coliform Rule | Resolved | Apr 1, 2024 to Apr 30, 2024 |
| Revised Total Coliform Rule | Resolved | Mar 1, 2024 to Mar 31, 2024 |
| TTHM | Archived | Jan 1, 2023 to Dec 31, 2024 |
| Total Haloacetic Acids (HAA5) | Archived | Jan 1, 2023 to Dec 31, 2024 |
| Revised Total Coliform Rule | Resolved | Jul 1, 2021 to Jul 31, 2021 |
| Consumer Confidence Rule | Resolved | Jul 1, 2021 to Dec 31, 2021 |
| Revised Total Coliform Rule | Resolved | Jan 1, 2021 to Jan 31, 2021 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2019 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2017 |
Cora-Win Cove
FL4431883 · Groundwater · 127 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
1 reported active health-based record(s) for this system
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: Jul 1, 2023 to Dec 1, 2023
Violation history (31)
| Rule | Status | Period |
|---|---|---|
| E. COLI | Archived | Mar 1, 2026 to Mar 31, 2026 |
| Revised Total Coliform Rule | Archived | Mar 1, 2026 to Mar 31, 2026 |
| Revised Total Coliform Rule | Archived | Oct 1, 2025 to Oct 31, 2025 |
| Revised Total Coliform Rule | Resolved | Apr 1, 2025 to Apr 30, 2025 |
| E. COLI | Resolved | Apr 1, 2025 to Apr 30, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Unaddressed | Feb 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | Unaddressed | Feb 1, 2025 |
| E. COLI | Resolved | Jan 1, 2025 to Jan 31, 2025 |
| Nitrate | Archived | Jan 1, 2025 to Dec 31, 2025 |
| Revised Total Coliform Rule | Resolved | Jan 1, 2025 to Jan 31, 2025 |
| Revised Total Coliform Rule | Resolved | Dec 1, 2024 to Dec 31, 2024 |
| E. COLI | Resolved | Dec 1, 2024 to Dec 31, 2024 |
| E. COLI | Resolved | Nov 1, 2024 to Nov 30, 2024 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2024 to Nov 30, 2024 |
| E. COLI | Resolved | Oct 1, 2024 to Oct 31, 2024 |
| Revised Total Coliform Rule | Resolved | Oct 1, 2024 to Oct 31, 2024 |
| Revised Total Coliform Rule | Resolved | Sep 1, 2024 to Sep 30, 2024 |
| E. COLI | Resolved | Sep 1, 2024 to Sep 30, 2024 |
| E. COLI | Resolved | Aug 1, 2024 to Aug 31, 2024 |
| Revised Total Coliform Rule | Resolved | Aug 1, 2024 to Aug 31, 2024 |
| Lead and Copper Rule | Resolved | Jul 1, 2024 to Jun 24, 2025 |
| Consumer Confidence Rule | Resolved | Jul 1, 2024 to Jun 24, 2025 |
| Lead and Copper Rule | Resolved | Jan 1, 2024 to Jun 24, 2025 |
| Asbestos | Resolved | Jan 1, 2024 to Dec 31, 2024 |
| Nitrate | Resolved | Jan 1, 2024 to Dec 31, 2024 |
| E. COLI | Resolved | Nov 1, 2023 to Nov 30, 2023 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2023 to Nov 30, 2023 |
| E. COLI | Resolved | Jun 1, 2023 to Jun 30, 2023 |
| Lead and Copper Rule | Resolved | Jan 1, 2021 to Jun 24, 2025 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2019 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2017 |
Seabranch Rv Resort
FL4431235 · Groundwater · 90 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
1 reported active health-based record(s) for this system
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
- 0.0021 mg/L
- Action level
- 0.015 mg/L
14% of the listed benchmark
Monitoring period: Jul 1, 2025 to Dec 1, 2025
Violation history (26)
| Rule | Status | Period |
|---|---|---|
| E. COLI | Archived | Apr 1, 2025 to Apr 30, 2025 |
| Revised Total Coliform Rule | Archived | Apr 1, 2025 to Apr 30, 2025 |
| Revised Total Coliform Rule | Archived | Mar 1, 2025 to Mar 31, 2025 |
| E. COLI | Archived | Mar 1, 2025 to Mar 31, 2025 |
| LEAD AND COPPER RULE REVISIONS | Unaddressed | Feb 1, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Unaddressed | Feb 1, 2025 |
| Revised Total Coliform Rule | Archived | Jan 1, 2025 to Jan 31, 2025 |
| E. COLI | Archived | Jan 1, 2025 to Jan 31, 2025 |
| Revised Total Coliform Rule | Resolved | Dec 1, 2024 to Dec 31, 2024 |
| E. COLI | Resolved | Dec 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2024 to Nov 30, 2024 |
| E. COLI | Resolved | Nov 1, 2024 to Nov 30, 2024 |
| E. COLI | Resolved | Oct 1, 2024 to Oct 31, 2024 |
| Revised Total Coliform Rule | Resolved | Oct 1, 2024 to Oct 31, 2024 |
| E. COLI | Resolved | Sep 1, 2024 to Sep 30, 2024 |
| Revised Total Coliform Rule | Resolved | Sep 1, 2024 to Sep 30, 2024 |
| Revised Total Coliform Rule | Resolved | Aug 1, 2024 to Aug 31, 2024 |
| E. COLI | Resolved | Aug 1, 2024 to Aug 31, 2024 |
| Consumer Confidence Rule | Resolved | Jul 1, 2024 to Mar 19, 2025 |
| Asbestos | Resolved | Jan 1, 2024 to Dec 31, 2024 |
| Nitrate | Resolved | Jan 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2023 to Jan 1, 2023 |
| E. COLI | Resolved | Nov 1, 2023 to Jan 1, 2023 |
| Nitrate | Resolved | Jan 1, 2023 to Jan 1, 2023 |
| Lead and Copper Rule | Resolved | Jan 1, 2022 to Oct 13, 2025 |
| Nitrate | Archived | Jan 1, 2022 to Dec 31, 2022 |
Hardness meter
What does nearby environmental evidence show?
336
PPM as CaCO₃
Very Hard
PPM
336
GPG
19.6
Regional environmental evidence
USGS hardness classification scale
336 PPM
Soft
0–60Moderate
61–120Hard
121–180Very hard
181+
0–60Moderate
61–120Hard
121–180Very hard
181+
Parts per million
336
mg/L as CaCO₃ equivalent
Grains per gallon
19.6
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
12
Nearest site
1.1 mi
Observation range
Nov 19, 2019–Jan 27, 2026
Regional evidence confidence
High
Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: M-657 AAH8121 (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 34994 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Stuart median
336 PPM
About the same1 indexed ZIP readings · Range 336–336 PPM
Florida median
280 PPM
56 PPM higher498 indexed ZIP readings · Range 42.2–2300 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 Stuart
Is tap water safe in Stuart?+
EPA ECHO reports 5 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.