Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Apache Junction, AZ 85120
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Pinal County.
1 active health-based record(s) across possible systems
- Largest possible serving system
- Arizona Water Co - Apache Junction
- Source water
- Groundwater + Surface water
- County
- Pinal 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
1 active health-based record
Measurements by utility
Each result belongs to a specific system.
Utility match
4 systems
Serves 62,055 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.
Arizona Water Co - Apache Junction
AZ0411004 · Groundwater · 62,055 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 (0)
No record returned in this imported window. This is not a guarantee of tap-water safety.
Apache Junction Water District
AZ0411039 · Surface water · 15,610 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, 2023
TTHM
EPA SDWIS reported health-based violation
- Reported level
- 0.081 MG/L
- Maximum contaminant level
- 0.08 MG/L
101% of the listed benchmark
Monitoring period: Apr 1, 2025 to Jun 30, 2025
Violation history (97)
| Rule | Status | Period |
|---|---|---|
| Chlorite | Resolved | Sep 1, 2025 to Sep 30, 2025 |
| Chlorite | Resolved | Sep 1, 2025 to Sep 30, 2025 |
| Chlorine dioxide | Resolved | Sep 1, 2025 to Sep 30, 2025 |
| Chlorine dioxide | Resolved | Sep 1, 2025 to Sep 30, 2025 |
| Chlorite | Resolved | Jul 1, 2025 to Jul 31, 2025 |
| Surface Water Treatment Rule | Resolved | May 1, 2025 to May 31, 2025 |
| TTHMHealth-based | Resolved | Apr 1, 2025 to Jun 30, 2025 |
| LEAD AND COPPER RULE REVISIONS | Resolved | Oct 17, 2024 to Feb 28, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to Feb 28, 2025 |
| CARBON, TOTAL | Resolved | Sep 1, 2024 to Sep 30, 2024 |
| Chlorite | Resolved | Sep 1, 2024 to Sep 30, 2024 |
| Chlorine dioxide | Resolved | Jun 1, 2024 to Jun 30, 2024 |
| CARBON, TOTAL | Resolved | Jun 1, 2024 to Jun 30, 2024 |
| CARBON, TOTAL | Resolved | May 1, 2024 to May 31, 2024 |
| CARBON, TOTAL | Resolved | Apr 1, 2024 to Apr 30, 2024 |
| Surface Water Treatment Rule | Resolved | Dec 1, 2023 to Dec 31, 2023 |
| Interim Enhanced Surface Water Treatment Rule | Resolved | Dec 1, 2023 to Dec 31, 2023 |
| CARBON, TOTAL | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| CARBON, TOTAL | Resolved | Sep 1, 2023 to Sep 30, 2023 |
| CARBON, TOTAL | Resolved | Aug 1, 2023 to Aug 31, 2023 |
| CARBON, TOTAL | Resolved | Jul 1, 2023 to Jul 31, 2023 |
| CARBON, TOTAL | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Chlorite | Resolved | Dec 1, 2022 to Dec 31, 2022 |
| Fluoride | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Arsenic | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Chromium | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| CYANIDE | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Fluoride | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Mercury | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Thallium, Total | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Selenium | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Nitrate | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| BHC-GAMMA | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Methoxychlor | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Diquat | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Endothall | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Glyphosate | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| OXAMYL | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Di(2-ethylhexyl) phthalate | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Picloram | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Hexachlorocyclopentadiene | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Atrazine | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| LASSO | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| 2,3,7,8-TCDD | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Heptachlor | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Heptachlor epoxide | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| 2,4,5-TP | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| HEXACHLOROBENZENE | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Pentachlorophenol | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Chlordane | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Endrin | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| BHC-GAMMA | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Methoxychlor | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Toxaphene | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Diquat | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Glyphosate | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| OXAMYL | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Di(2-ethylhexyl) phthalate | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| LASSO | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Heptachlor | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Heptachlor epoxide | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| 2,4-D | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| HEXACHLOROBENZENE | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Benzo(a)pyrene | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| ETHYLENE DIBROMIDE | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Chlordane | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Nitrate | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Dalapon | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Endrin | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Di(2-ethylhexyl) adipate | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Arsenic | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Dalapon | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Hexachlorocyclopentadiene | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Dinoseb | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| 2,4-D | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Picloram | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Simazine | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Atrazine | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Barium | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Simazine | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Antimony, Total | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Cadmium | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Toxaphene | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Benzo(a)pyrene | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Carbofuran | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Dinoseb | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Endothall | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Nickel | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| ETHYLENE DIBROMIDE | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Pentachlorophenol | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| 2,3,7,8-TCDD | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| 2,4,5-TP | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Di(2-ethylhexyl) adipate | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Beryllium, Total | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Carbofuran | Resolved | Jan 1, 2022 to Dec 31, 2024 |
Arizonian Rv Resort
AZ0411708 · Groundwater · 225 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
- 0.007 mg/L
- Action level
- 0.015 mg/L
47% of the listed benchmark
Monitoring period: Jan 1, 2021 to Dec 31, 2023
Violation history (12)
| Rule | Status | Period |
|---|---|---|
| Chlorine | Resolved | Oct 1, 2025 to Oct 31, 2025 |
| Public Notice | Unaddressed | Jul 25, 2025 |
| Public Notice | Resolved | Dec 20, 2024 to Jan 31, 2024 |
| Groundwater RuleHealth-based | Resolved | Nov 14, 2024 to Feb 18, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to Dec 30, 2024 |
| LEAD AND COPPER RULE REVISIONS | Resolved | Oct 17, 2024 to Dec 30, 2024 |
| Revised Total Coliform Rule | Resolved | Jun 1, 2024 to Jun 30, 2024 |
| Revised Total Coliform Rule | Resolved | Mar 1, 2024 to Apr 22, 2024 |
| Consumer Confidence Rule | Resolved | Oct 2, 2023 to Jul 5, 2023 |
| Groundwater RuleHealth-based | Resolved | Apr 16, 2022 to Apr 27, 2022 |
| Groundwater RuleHealth-based | Resolved | Mar 17, 2022 to Dec 20, 2024 |
| Revised Total Coliform Rule | Resolved | Jun 1, 2021 to Jul 28, 2021 |
Northern Section 4 Coop
AZ0411201 · Groundwater · 48 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
- 6.2e-4 mg/L
- Action level
- 0.015 mg/L
4% of the listed benchmark
Monitoring period: Jan 1, 2020 to Dec 31, 2022
Violation history (11)
| Rule | Status | Period |
|---|---|---|
| Lead and Copper Rule | Unaddressed | Oct 1, 2025 |
| Public Notice | Unaddressed | Jul 25, 2025 |
| Revised Total Coliform Rule | Resolved | Jun 1, 2024 to Jun 30, 2024 |
| Revised Total Coliform Rule | Resolved | Mar 1, 2024 to Apr 22, 2024 |
| Consumer Confidence Rule | Resolved | Oct 2, 2023 to Jul 5, 2023 |
| Nitrate | Resolved | Jan 1, 2023 to Dec 31, 2023 |
| Gross Alpha, Excl. Radon and U | Resolved | Apr 1, 2022 to Jun 30, 2022 |
| Public Notice | Resolved | Jan 28, 2022 to Jun 22, 2021 |
| Revised Total Coliform Rule | Resolved | Jun 1, 2021 to Jul 28, 2021 |
| Groundwater RuleHealth-based | Unaddressed | Feb 23, 2019 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2002 |
Hardness meter
What does nearby environmental evidence show?
866
PPM as CaCO₃
Very Hard
PPM
866
GPG
50.6
Regional environmental evidence
USGS hardness classification scale
866 PPM
Soft
0–60Moderate
61–120Hard
121–180Very hard
181+
0–60Moderate
61–120Hard
121–180Very hard
181+
Parts per million
866
mg/L as CaCO₃ equivalent
Grains per gallon
50.6
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
1
Nearest site
24.2 mi
Observation range
Apr 25, 2018–Apr 25, 2018
Regional evidence confidence
Low
Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: A-02-04 21CCB (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 85120 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Apache Junction median
866 PPM
About the same1 indexed ZIP readings · Range 866–866 PPM
Arizona median
64 PPM
802 PPM higher213 indexed ZIP readings · Range 33–2680 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 →Nearby indexed reports
More local profiles in Apache Junction
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Apache Junction
Is tap water safe in Apache Junction?+
EPA ECHO reports 1 active health-based violation 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.