ZipCheckup grade for 85648: C.

A mixed picture - some signals here are worth your attention.

Your top priority: use a filter certified to reduce PFAS; check which ones. Check your ZIP → EPA PFAS info

Water Quality Report
C 63

Rio Rico, AZ (85648): PFAS Above 2029 MCL Level - 63/100

EPA data combined for 3 water systems mapped to this ZIP (largest mapped system: Liberty Water Rio Rico)

PFAS Detected

EPA records for the water systems mapped to 85648 in Rio Rico, AZ contain 11 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score
C 63/100
Water Quality PFAS above MCL 11 non-health-based violation records in EPA data
Lead Risk Below action level Below the reporting limit, 90th percentile, sample period ending 2024-12-31
NFIP Claim History Claim records 7 claims
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 11 violations (non-health) (since 2021).
  • Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero.
  • PFAS At least one PFAS result is above an EPA MCL value (UCMR5 sampling; MCL compliance required from 2029).
  • Radon EPA Zone 2 - county-level radon potential, not a home measurement.
  • Flood 7 cumulative NFIP claim records. Claim evidence is historical, not current map coverage.
Contaminant Summary
Violations on record (not health-based)
11 violations PFAS detected
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record
C
ZIP-level Home Safety model score: 63 / 100
Bottom 21% of U.S. ZIP codes
3
Water Systems
17,960
People Served
0
Health Violations (since 2021)
Groundwater
Water Source
Zone 2
County Radon Potential · Moderate
$213K
Median Home Value26% below state median ($287K)

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Score Breakdown

Overall Home Safety Score: 63/100

This is the published model score. Component and domain values are shown independently; they are not added together on this page.

Canonical components

EPA water compliance
78/100
Observed
PFAS MCL screen
0/100
Observed
EPA radon zone
50/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

Drinking water
39/100
Indoor environment
50/100
Outdoor environment
100/100

Coverage: 4 of 4 components and 3 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (7) HIGH

Your Water System

ZIP code 85648 in Rio Rico, Arizona is mapped to the water system Liberty Water Rio Rico (EPA ID: AZ0412011). This system provides water to approximately 17,960 people from groundwater sources.

There are 3 community water systems serving this area.

Water Systems Serving This Area

System Name EPA ID Population Source
Liberty Water Rio Rico AZ0412011 17,960 Groundwater
Epcor - Tubac AZ0412001 2,076 Groundwater
Baca Float Water Company AZ0412037 1,090 Groundwater

Other Water Quality Reports in Arizona

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Liberty Water Rio Rico (AZ0412011) on EPA.gov.

4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.

📊 EPA Safe Drinking Water · View source →

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 85648. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.

Detected compounds: PFOS, PFBS, PFHxS, PFOA, PFBA, PFHxA, PFPeA.

Highest measured level: 0.0409 µg/L

Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.

📊 EPA UCMR5 · View source →
Environmental Hazards (11) HIGH
Home & Infrastructure (6) OK
Cost & Community (9) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Rio Rico

Based on local data for ZIP 85648, these services may benefit homeowners in your area.

Based on local data for your area. Use the tools below to explore your options.

Home & Flood Insurance

The ZIP code for this report in Rio Rico has 7 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.

Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote

Check Your Flood Zone (Free)

FEMA flood map lookup - see if your property is in a flood zone

Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)

Roofing Inspection & Repair

Active weather alerts in Arizona increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.

Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500

Estimate Your Home Insurance Needs

Service recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.

Frequently Asked Questions

Is the tap water in 85648 safe to drink?

EPA SDWIS records 11 violations since 2021 across the water systems mapped to ZIP 85648 (primary system: Liberty Water Rio Rico), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 85648's water come from?

The recorded water source for Liberty Water Rio Rico, a system mapped to ZIP code 85648, is Groundwater. This system serves approximately 17,960 people.

How does Rio Rico water compare to the national average?

Rio Rico's Home Safety Score ranks lower than 79% of U.S. ZIP codes, and lower than 70% of ZIP codes within Arizona.

How can I get my water tested in Rio Rico?

If Liberty Water Rio Rico supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

What is the radon risk for 85648?

85648 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Santa Cruz County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

Are there PFAS (forever chemicals) in 85648's water?

Yes, PFAS have been detected in samples from water systems mapped to 85648. One or more PFAS results are above the level of a federal PFAS MCL with compliance required from 2029. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.

What does the NFIP claim history show for ZIP 85648?

FEMA records contain 7 flood insurance claims filed in ZIP code 85648; the recorded rated-zone value (the most frequent one if there are several claims) is A, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.

How to cite this page

APA ZipCheckup. (2026). Rio Rico, AZ (85648): PFAS Above 2029 MCL Level - 63/100. https://zipcheckup.com/report/85648/
BibTeX 
@misc{zipcheckup-report-85648,
  author = {{ZipCheckup}},
  title  = {{Rio Rico, AZ (85648): PFAS Above 2029 MCL Level - 63/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/85648/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 85648

ZIP Code City, State Distance Grade Violations
85640 Tumacacori, AZ 4.4 mi N/A 11
85646 Tubac, AZ 7.4 mi N/A 11
85628 Nogales, AZ 9.9 mi N/A 0
85662 Nogales, AZ 9.9 mi N/A 0
85645 Amado, AZ 11.4 mi N/A 14
85621 Nogales, AZ 12.0 mi C 73
85601 Arivaca, AZ 15.2 mi N/A 0
85622 Green Valley, AZ 22.0 mi B 9
85624 Patagonia, AZ 22.4 mi B 4
85614 Green Valley, AZ 24.3 mi D 22

Contaminants Detected in 85648

Learn more about the contaminants found in your water supply:

Overall safety breakdown

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Coverage: 14/17 risk factors Data sources →
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