Water Quality in 85701 — Tucson, AZ
EPA data for TUCSON CITY OF
Data source: U.S. Environmental Protection Agency (EPA) SDWIS Last verified: March 16, 2026
Your Water System
ZIP code 85701 in Tucson, Arizona is served by TUCSON CITY OF (EPA ID: AZ0410112). This system provides water to approximately 732,906 people from groundwater sources.
There are 130 community water systems serving this area.
Lead & Copper in Your Water
No Lead & Copper Rule sampling data available for systems serving this ZIP code.
Violation Summary
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Unresolved |
| April 11, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| April 11, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| April 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| February 19, 2025 | Contaminant 0700 | Health-based | Resolved |
| February 19, 2025 | Contaminant 0700 | Health-based | Resolved |
| January 1, 2025 | Stage 1 DBP Rule | Monitoring | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| October 1, 2024 | PFOA | Monitoring | Unresolved |
| October 1, 2024 | PFOA | Monitoring | Unresolved |
| October 1, 2024 | PFOA | Monitoring | Resolved |
| October 1, 2024 | PFNA | Monitoring | Unresolved |
| October 1, 2024 | PFNA | Monitoring | Unresolved |
| October 1, 2024 | PFNA | Monitoring | Resolved |
| October 1, 2024 | Monochloroacetic Acid | Monitoring | Unresolved |
| October 1, 2024 | Monochloroacetic Acid | Monitoring | Unresolved |
| October 1, 2024 | Monochloroacetic Acid | Monitoring | Resolved |
| October 1, 2024 | Dichloroacetic Acid | Monitoring | Unresolved |
| October 1, 2024 | Dichloroacetic Acid | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for water systems serving this ZIP code:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Lead | Inorganic | 28 | Yes |
| Consumer Confidence Report Rule | Reporting | 7 | No |
| PFOA | PFAS | 7 | No |
| PFNA | PFAS | 7 | No |
| Monochloroacetic Acid | Disinfection Byproducts | 7 | No |
| Dichloroacetic Acid | Disinfection Byproducts | 7 | No |
| Bromodichloromethane | Disinfection Byproducts | 7 | No |
| Dibromochloromethane | Disinfection Byproducts | 7 | No |
| Bromoform | Disinfection Byproducts | 7 | No |
| Chlorodibromomethane | Disinfection Byproducts | 7 | No |
| Trichloroacetic Acid | Disinfection Byproducts | 7 | No |
| Monobromoacetic Acid | Disinfection Byproducts | 7 | No |
| Dibromoacetic Acid | Disinfection Byproducts | 7 | No |
| Bromochloroacetic Acid | Disinfection Byproducts | 7 | No |
| Bromodichloroacetic Acid | Disinfection Byproducts | 7 | No |
Need help with your water quality?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| TUCSON CITY OF | AZ0410112 | 732,906 | Groundwater |
| METROPOLITAN DWID | AZ0410076 | 45,570 | Groundwater |
| USAF DAVIS MONTHAN AFB | AZ0420549 | 18,640 | Groundwater |
| VAIL WATER COMPANY | AZ0410041 | 17,500 | Groundwater |
| FLOWING WELLS IRRIGATION DISTRICT | AZ0410051 | 16,000 | Groundwater |
What You Can Do
- Request your water system’s Consumer Confidence Report (CCR) — Your utility is required to publish this annually
- Consider a home water test — Independent testing can reveal issues in your specific plumbing
- Install a certified water filter — NSF-certified filters can address specific contaminants
- Contact your water provider — Ask about current treatment and any ongoing remediation
Need help with water testing or filtration?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Other Water Quality Reports in Arizona
- 85001 (Phoenix) — 248 violations
- 85117 (Apache Junction) — 263 violations
- 85122 (Casa Grande) — 52 violations
- 85123 (Arizona City) — 94 violations
- 85127 (Chandler Heights) — 6 violations
- 85128 (Coolidge) — 101 violations
- 85131 (Eloy) — 139 violations
- 85132 (Florence) — 109 violations
- 85135 (Hayden) — 91 violations
- 85137 (Kearny) — 82 violations
- 85138 (Maricopa) — 428 violations
- 85140 (San Tan Valley) — 90 violations
- 85141 (Picacho) — 88 violations
- 85142 (Queen Creek) — 70 violations
- 85145 (Red Rock) — 43 violations
- 85172 (Stanfield) — 92 violations
- 85173 (Superior) — 11 violations
- 85201 (Mesa) — 38 violations
- 85224 (Chandler) — 259 violations
- 85233 (Gilbert) — 364 violations
Nearby Water Quality Reports
- 85145 (Red Rock) — 33 mi — 43 violations
- 85141 (Picacho) — 42 mi — 88 violations
- 85131 (Eloy) — 52 mi — 139 violations
- 85123 (Arizona City) — 55 mi — 94 violations
- 85135 (Hayden) — 56 mi — 91 violations
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for TUCSON CITY OF (AZ0410112) on EPA.gov.
Frequently Asked Questions
Is the tap water in 85701 safe to drink?
Tucson’s water system has recorded 6 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
Where does 85701’s water come from?
The primary water source for this area is groundwater. TUCSON CITY OF serves approximately 732,906 people.
How can I get my water tested?
Contact your local water utility for a free water quality report, or hire a certified lab for independent home water testing. The EPA recommends testing annually if you use a private well.
Does 85701 have lead in the water?
No Lead and Copper Rule sampling data is currently available in EPA records for water systems serving ZIP code 85701. If you are concerned about lead, contact your water utility or have your tap water independently tested.
What is the radon risk in 85701?
Radon zone data is not available for ZIP code 85701. The EPA recommends testing all homes for radon regardless of location, as radon levels can vary significantly even within the same neighborhood.