Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Tucson, AZ 85710
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Pima County.
No active health-based violation reported
- Largest possible serving system
- Tucson City Of
- Source water
- Groundwater
- County
- Pima 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
No active flag
0 active health-based records
Measurements by utility
Each result belongs to a specific system.
Utility match
10 systems
Serves 732,906 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.
Tucson City Of
AZ0410112 · Groundwater · 732,906 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
- 6.5e-4 mg/L
- Action level
- 0.015 mg/L
4% of the listed benchmark
Monitoring period: Jan 1, 2021 to Dec 31, 2023
Violation history (33)
| Rule | Status | Period |
|---|---|---|
| Ethylbenzene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| trans-1,2-Dichloroethylene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| 1,1,1-Trichloroethane | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Toluene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Radium-228 | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Vinyl chloride | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Carbon tetrachloride | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Combined Radium (-226 and -228) | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Tetrachloroethylene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| 1,1,2-Trichloroethane | Archived | Jan 1, 2026 to Mar 31, 2026 |
| 1,1-Dichloroethylene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| 1,2-Dichloropropane | Archived | Jan 1, 2026 to Mar 31, 2026 |
| p-Dichlorobenzene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| 1,2-Dichloroethane | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Styrene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Radium-226 | Archived | Jan 1, 2026 to Mar 31, 2026 |
| 1,2,4-Trichlorobenzene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Benzene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| cis-1,2-Dichloroethylene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| DICHLOROMETHANE | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Gross Alpha, Excl. Radon and U | Archived | Jan 1, 2026 to Mar 31, 2026 |
| o-Dichlorobenzene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| CHLOROBENZENE | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Combined Uranium | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Xylenes, Total | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Trichloroethylene | Archived | Jan 1, 2026 to Mar 31, 2026 |
| Methoxychlor | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Endrin | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| LASSO | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| BHC-GAMMA | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Heptachlor epoxide | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Heptachlor | Resolved | Jan 1, 2022 to Dec 31, 2024 |
| Nitrate | Resolved | Jan 1, 2021 to Dec 31, 2021 |
Metropolitan Dwid
AZ0410076 · Groundwater · 45,570 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
- 5.7e-4 mg/L
- Action level
- 0.015 mg/L
4% of the listed benchmark
Monitoring period: Jan 1, 2023 to Dec 31, 2025
Violation history (68)
| Rule | Status | Period |
|---|---|---|
| cis-1,2-Dichloroethylene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,2,4-Trichlorobenzene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| o-Dichlorobenzene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,1-Dichloroethylene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| trans-1,2-Dichloroethylene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Carbon tetrachloride | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,1,2-Trichloroethane | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Benzene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Toluene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Ethylbenzene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,2,4-Trichlorobenzene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| cis-1,2-Dichloroethylene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| DICHLOROMETHANE | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| o-Dichlorobenzene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,1,1-Trichloroethane | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Carbon tetrachloride | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Tetrachloroethylene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Benzene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Styrene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| CHLOROBENZENE | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Toluene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Styrene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Ethylbenzene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Tetrachloroethylene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Trichloroethylene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,2-Dichloropropane | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| CHLOROBENZENE | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| p-Dichlorobenzene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Trichloroethylene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,1,2-Trichloroethane | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| p-Dichlorobenzene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Xylenes, Total | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Xylenes, Total | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,1,1-Trichloroethane | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,2-Dichloropropane | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,2-Dichloroethane | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Vinyl chloride | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,2-Dichloroethane | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| Vinyl chloride | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| DICHLOROMETHANE | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,1-Dichloroethylene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| trans-1,2-Dichloroethylene | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| 1,2,4-Trichlorobenzene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| cis-1,2-Dichloroethylene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Xylenes, Total | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| p-Dichlorobenzene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| 1,1-Dichloroethylene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Tetrachloroethylene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Toluene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Ethylbenzene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Styrene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Vinyl chloride | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| DICHLOROMETHANE | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| 1,2-Dichloroethane | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| o-Dichlorobenzene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Nitrate | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Trichloroethylene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| trans-1,2-Dichloroethylene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Benzene | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| CHLOROBENZENE | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| 1,1,2-Trichloroethane | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| 1,1,1-Trichloroethane | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Carbon tetrachloride | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| 1,2-Dichloropropane | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Revised Total Coliform Rule | Resolved | Jul 1, 2023 to Aug 16, 2023 |
| Di(2-ethylhexyl) phthalate | Resolved | Oct 1, 2021 to Dec 31, 2021 |
| Chlorine | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2002 |
Usaf Davis Monthan Afb
AZ0420549 · Groundwater · 18,640 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, 2022 to Dec 31, 2024
Violation history (12)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Resolved | Jul 1, 2025 to Oct 28, 2025 |
| Revised Total Coliform Rule | Resolved | Apr 1, 2025 to Jun 27, 2025 |
| Nitrate | Resolved | Jan 1, 2024 to Dec 31, 2024 |
| Nitrate | Resolved | Jan 1, 2024 to Dec 31, 2024 |
| Nitrate | Resolved | Jan 1, 2024 to Dec 31, 2024 |
| Nitrate | Resolved | Jan 1, 2024 to Dec 31, 2024 |
| Nitrate | Resolved | Jan 1, 2024 to Dec 31, 2024 |
| Nitrate | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Nitrate | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Nitrate | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Nitrate | Resolved | Jan 1, 2022 to Dec 31, 2022 |
| Nitrate | Resolved | Jan 1, 2022 to Dec 31, 2022 |
Vail Water Company
AZ0410041 · Groundwater · 17,500 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.
Flowing Wells Irrigation District
AZ0410051 · Groundwater · 16,000 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 (56)
| Rule | Status | Period |
|---|---|---|
| Revised Total Coliform Rule | Unaddressed | Feb 1, 2026 |
| Lead and Copper Rule | Unaddressed | Jan 1, 2026 |
| DICHLOROMETHANE | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| o-Dichlorobenzene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| trans-1,2-Dichloroethylene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,2-Dichloroethane | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Carbon tetrachloride | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,2-Dichloropropane | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Tetrachloroethylene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| CHLOROBENZENE | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Benzene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Toluene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,2,4-Trichlorobenzene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| cis-1,2-Dichloroethylene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Xylenes, Total | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| p-Dichlorobenzene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,1-Dichloroethylene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Carbon tetrachloride | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Trichloroethylene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,1,2-Trichloroethane | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Tetrachloroethylene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| CHLOROBENZENE | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Toluene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Ethylbenzene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Styrene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Trichloroethylene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Styrene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Ethylbenzene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Vinyl chloride | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,1,2-Trichloroethane | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,1-Dichloroethylene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,1,1-Trichloroethane | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| p-Dichlorobenzene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Benzene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Xylenes, Total | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,2-Dichloroethane | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,2-Dichloropropane | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| cis-1,2-Dichloroethylene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| DICHLOROMETHANE | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Vinyl chloride | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| trans-1,2-Dichloroethylene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| o-Dichlorobenzene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,1,1-Trichloroethane | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| 1,2,4-Trichlorobenzene | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Public Notice | Resolved | Apr 12, 2025 to Jun 27, 2025 |
| Public Notice | Resolved | Dec 20, 2024 to May 15, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to Oct 22, 2024 |
| LEAD AND COPPER RULE REVISIONS | Resolved | Oct 17, 2024 to Oct 22, 2024 |
| Total Haloacetic Acids (HAA5) | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| TTHM | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2023 to Nov 30, 2023 |
| TTHM | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Total Haloacetic Acids (HAA5) | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Arsenic | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Lead and Copper Rule | Resolved | Jan 1, 2023 to Feb 10, 2023 |
| Chlorine | Resolved | Jul 1, 2021 to Sep 30, 2021 |
Tucson Water Corona De Tucson
AZ0410169 · Groundwater · 10,217 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
- 7.8e-4 mg/L
- Action level
- 0.015 mg/L
5% 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.
Avra Water Coop Inc
AZ0410006 · Groundwater · 6,685 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, 2022 to Dec 31, 2024
Violation history (3)
| Rule | Status | Period |
|---|---|---|
| Lead and Copper Rule | Resolved | Jan 1, 2025 to Apr 22, 2025 |
| Chlorine | Resolved | Jun 1, 2024 to Jun 30, 2024 |
| Chlorine | Resolved | Jul 1, 2021 to Sep 30, 2021 |
Metropolitan Dwid - Diablo Village
AZ0410357 · Groundwater · 5,542 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, 2022 to Dec 31, 2024
Violation history (10)
| Rule | Status | Period |
|---|---|---|
| Total Haloacetic Acids (HAA5) | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| TTHM | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Revised Total Coliform Rule | Resolved | Jul 1, 2023 to Aug 16, 2023 |
| Arsenic | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Arsenic | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Total Haloacetic Acids (HAA5) | Resolved | Jan 1, 2023 to Oct 25, 2023 |
| TTHM | Resolved | Jan 1, 2023 to Oct 25, 2023 |
| Revised Total Coliform Rule | Resolved | Jul 1, 2022 to Aug 23, 2022 |
| Chlorine | Resolved | Jul 1, 2021 to Sep 30, 2021 |
| Chlorine | Resolved | Apr 1, 2021 to Jun 30, 2021 |
Adoc Tucson
AZ0420557 · Groundwater · 4,500 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 |
|---|---|---|
| Groundwater RuleHealth-based | Resolved | Dec 10, 2025 to Feb 24, 2026 |
| Revised Total Coliform Rule | Resolved | Oct 1, 2021 to Nov 23, 2021 |
Ray Water Company Inc
AZ0410095 · Groundwater · 4,495 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, 2024 to Dec 31, 2024
Violation history (4)
| Rule | Status | Period |
|---|---|---|
| Revised Total Coliform Rule | Resolved | Apr 1, 2024 to Jun 18, 2024 |
| Lead and Copper Rule | Resolved | Oct 1, 2023 to Jul 17, 2024 |
| Revised Total Coliform Rule | Resolved | Feb 1, 2023 to May 19, 2023 |
| Revised Total Coliform Rule | Resolved | Mar 1, 2022 to Apr 18, 2022 |
Hardness meter
What does nearby environmental evidence show?
209.5
PPM as CaCO₃
Very Hard
PPM
209.5
GPG
12.3
Regional environmental evidence
USGS hardness classification scale
209.5 PPM
Soft
0–60Moderate
61–120Hard
121–180Very hard
181+
0–60Moderate
61–120Hard
121–180Very hard
181+
Parts per million
209.5
mg/L as CaCO₃ equivalent
Grains per gallon
12.3
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
8
Nearest site
17.3 mi
Observation range
Jan 11, 2016–Aug 16, 2016
Regional evidence confidence
Low
Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: D-13-12 10DDA1 (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 85710 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Tucson median
210 PPM
About the same23 indexed ZIP readings · Range 50–209.5 PPM
Arizona median
64 PPM
146 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
Use the current Consumer Confidence Report for treated-water results and official notices.
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 Tucson
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Tucson
Is tap water safe in Tucson?+
EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.
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.