Is Three Points, AZ Tap Water Safe to Drink?
Graded D+, with 86 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
50.3/100
waterverge.com Three Points, AZ — Water Quality Report
Three Points's drinking water received a grade of D+ (50.3 out of 100), indicating poor water quality. The city's 5 water systems serve approximately 889 residents using groundwater.
Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 330 violations on record, including 5 health-based violations. 86 remain unresolved.
What to know about Three Points's water
Three Points ranks #183 out of 292 cities in Arizona for water quality, placing it below average in the state.
Three Points relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
As a small community water system, Three Points may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 16 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Three Points, AZ water safe to drink?
Three Points's drinking water has significant quality concerns based on EPA testing data. With a grade of D+ (50.3/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 5 water systems serve approximately 889 residents using groundwater (wells).
Recent water quality updates for Three Points
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Three Points's water quality assessment. Grade: D+ (50.3/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: LEAD AND COPPER RULE REVISIONS.
Contaminants: Total Haloacetic Acids (HAA5), TTHM.
Federal disaster declaration (FEMA DR-3241). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-977). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Three Points's water supply.
Well within EPA limits.
Violation history
Three Points's water system has 330 total violations on record, including 5 health-based violations. 86 remain unresolved. 16 violations were issued in the last 5 years.
Flood & environmental risk
Pima County has experienced 9 federally declared disasters since 1966. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.
Where does Three Points's water come from?
Three Points's drinking water comes from groundwater (wells), supplied by 5 water systems serving approximately 889 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Three Points residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Three Points's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Three Points's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Drought conditions
D2 — severe droughtPima County is currently in D2 (severe drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Pima County has experienced 9 federally declared disasters since 1966. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Three Points compares by contaminant
Explore where Three Points ranks among all Arizona cities for specific contaminants.
Water source & infrastructure
Where Three Points's water comes from
Three Points's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by private ownership and serves approximately 889 people through 5 water systems.
Water systems serving Three Points
| System Name | PWSID | Population | Source |
|---|---|---|---|
| THIM UTILITY COMPANY | AZ0410117 | 310 | GW |
| THIM UTILITY COMPANY - WELL 9 | AZ0410206 | 254 | GW |
| WILDFLOWER WATER COOP | AZ0410265 | 157 | GW |
| GW SAGUARO DIST WATER CO - AMBER ANN | AZ0410317 | 108 | GW |
| WORDEN WATER COMPANY | AZ0410132 | 60 | GW |
How Three Points compares
Full Arizona rankings →Three Points's score of 50.3/100 is above the average of 42/100 among major Arizona cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Arizona rankings →About Three Points, AZ
Wikipedia →Tucson is the county seat of and the most populated city in Pima County, Arizona, United States. It is the second-most populous city in Arizona with a population of 542,630 at the 2020 census, behind the capital city, Phoenix, while the Tucson metropolitan statistical area has an estimated 1.08 million residents and is the 52nd-largest metropolitan area in the U.S. Tucson and Phoenix anchor the Arizona Sun Corridor. The city is 108 miles southeast of Phoenix and 60 mi (100 km) north of the United States–Mexico border. It is home to the University of Arizona.
Learn more about your water
Guides and resources related to Three Points's water quality findings.
Explore water quality across Pima
Frequently asked questions
Is Three Points, AZ tap water safe to drink?
Three Points's water quality earned a grade of D+ (50.3/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #183 out of 292 cities tested in Arizona.
What contaminants are in Three Points's water?
Lead was measured at 0.0 ppb (90th percentile). 330 violations are on record.
How is Three Points's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Three Points?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Three Points's water come from?
Three Points's water is sourced from Groundwater. The city has 5 water systems serving approximately 889 residents.
What health violations has Three Points's water system had?
Three Points has 5 health-based violations on record. The most recent violation was recorded in December 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 86 violations remain unresolved.
Is Three Points's groundwater at risk of contamination?
Three Points uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 330 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Three Points's water compare to other cities?
Three Points ranks #183 out of 292 cities in Arizona (better than 37% of state cities) and #13023 out of 15744 cities nationally (17th percentile). The grade of D+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.