City water profile

Water hardness in Tucson

Find official utility reports, understand hardness, and check the water system serving your home in Tucson, Arizona.

Utility-reported hardness

Not yet available

Check your provider and source →

State comparison: Unavailable
Evidence comparison rank: —
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 →

Convert a hardness result →Test your tap →

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

Below action level

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)

Imported violation history for Tucson City Of
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

Below action level

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)

Imported violation history for Metropolitan Dwid
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

Below action level

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)

Imported violation history for Usaf Davis Monthan Afb
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

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.

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

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 (56)

Imported violation history for Flowing Wells Irrigation District
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

Below action level

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

Below action level

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)

Imported violation history for Avra Water Coop Inc
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

Below action level

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)

Imported violation history for Metropolitan Dwid - Diablo Village
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

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 Adoc Tucson
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

Below action level

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)

Imported violation history for Ray Water Company Inc
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

City summary

What the indexed records say

Tucson has 23 published ZIP profiles across Pima County. The regional-evidence median is 210 PPM. The city does not meet the stricter comparison standard.

The 50–209.5 PPM range shows how much the available ZIP estimates vary within the city label. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft1 ZIP

Moderately hard0 ZIPs

Hard1 ZIP

Very hard21 ZIPs

23 of 23 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 13.3 miles
Profiles with evidence: 23/23

Confidence labels

High: 0Moderate: 0Low: 23

Observation window: Jan 11, 2016 to Aug 16, 2016.

ZIP directory

Water reports in Tucson

Open a ZIP for site-level provenance and measurements.

ZIP code

What does the utility report?

Your utility’s measurements and compliance records

Tucson City Of

Lead (90th percentile)

Metropolitan Dwid

Lead (90th percentile)

Usaf Davis Monthan Afb

Lead (90th percentile)

Vail Water Company

Lead (90th percentile)

Flowing Wells Irrigation District

Lead (90th percentile)

Tucson Water Corona De Tucson

Lead (90th percentile)

Avra Water Coop Inc

Lead (90th percentile)

Metropolitan Dwid - Diablo Village

Lead (90th percentile)

Adoc Tucson

Lead (90th percentile)

Ray Water Company Inc

Lead (90th percentile)

What the indexed records say

How local ZIP estimates compare

Distance, dates, and confidence

Water reports in Tucson

85701

85705

85706

85707

85708

85709

85710

85711

85712

85713

85714

85715

85716

85719

85721

85723

85724

85726

85730

85734

85747

85748

85756

Move from index to evidence

Other Arizona communities

About water in Tucson

Is the water hard?

Is the tap water safe?

Do I need treatment?