Is Quartzsite, AZ Tap Water Safe to Drink?
Graded D+, with 66 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
52.3/100
waterverge.com Quartzsite, AZ — Water Quality Report
Quartzsite's drinking water received a grade of D+ (52.3 out of 100), indicating poor water quality. The city's 4 water systems serve approximately 4,913 residents using groundwater.
Lead levels were measured at 1.2 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 460 violations on record, including 7 health-based violations. 66 remain unresolved.
What to know about Quartzsite's water
Quartzsite ranks #179 out of 292 cities in Arizona for water quality, placing it below average in the state.
Quartzsite 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.
The system has seen 12 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Quartzsite, AZ water safe to drink?
Quartzsite's drinking water has significant quality concerns based on EPA testing data. With a grade of D+ (52.3/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 4 water systems serve approximately 4,913 residents using groundwater (wells).
Recent water quality updates for Quartzsite
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Quartzsite's water quality assessment. Grade: D+ (52.3/100).
Contaminants: Lead and Copper Rule.
Contaminants: Chlorine.
Contaminants: Lead and Copper Rule.
Federal disaster declaration (FEMA DR-4203). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3241). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Quartzsite's water supply.
Well within EPA limits.
Violation history
Quartzsite's water system has 460 total violations on record, including 7 health-based violations. 66 remain unresolved. 12 violations were issued in the last 5 years.
Flood & environmental risk
La Paz County has experienced 3 federally declared disasters since 1983. 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 Quartzsite's water come from?
Quartzsite's drinking water comes from groundwater (wells), supplied by 4 water systems serving approximately 4,913 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Quartzsite residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Quartzsite'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.
Quartzsite'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 droughtLa Paz 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
La Paz County has experienced 3 federally declared disasters since 1983. 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. | 1.2 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Quartzsite compares by contaminant
Explore where Quartzsite ranks among all Arizona cities for specific contaminants.
Water source & infrastructure
Where Quartzsite's water comes from
Quartzsite'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 4,913 people through 4 water systems.
Water systems serving Quartzsite
| System Name | PWSID | Population | Source |
|---|---|---|---|
| QUARTZSITE TOWN OF | AZ0415346 | 2,761 | GW |
| CS Q MOUNTAIN WATER COMPANY | AZ0415096 | 1,224 | GW |
| 88 SHADES RV PARK | AZ0415435 | 488 | GW |
| Q MOUNTAIN VISTA MHP | AZ0415509 | 440 | GWP |
How Quartzsite compares
Full Arizona rankings →Quartzsite's score of 52.3/100 is above the average of 42/100 among major Arizona cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Arizona rankings →About Quartzsite, AZ
Learn more about your water
Guides and resources related to Quartzsite's water quality findings.
Explore water quality across La Paz
Frequently asked questions
Is Quartzsite, AZ tap water safe to drink?
Quartzsite's water quality earned a grade of D+ (52.3/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #179 out of 292 cities tested in Arizona.
What contaminants are in Quartzsite's water?
Lead was measured at 1.2 ppb (90th percentile). 460 violations are on record.
How is Quartzsite'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 Quartzsite?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Quartzsite's water come from?
Quartzsite's water is sourced from Groundwater. The city has 4 water systems serving approximately 4,913 residents.
What health violations has Quartzsite's water system had?
Quartzsite has 7 health-based violations on record. The most recent violation was recorded in January 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 66 violations remain unresolved.
Is Quartzsite's groundwater at risk of contamination?
Quartzsite 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 460 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 Quartzsite's water compare to other cities?
Quartzsite ranks #179 out of 292 cities in Arizona (better than 39% of state cities) and #12772 out of 15744 cities nationally (19th percentile). The grade of D+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.