Is Stockton, UT Tap Water Safe to Drink?
Graded A-, with 3 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
86.5/100
waterverge.com Stockton, UT — Water Quality Report
Stockton's drinking water received a grade of A- (86.5 out of 100), indicating good water quality. The city's 1 water system serves approximately 620 residents using surface water.
Lead levels were measured at 1.5 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 176 violations on record, including 2 health-based violations. 3 remain unresolved.
What to know about Stockton's water
Stockton ranks #42 out of 177 cities in Utah for water quality, placing it above average in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Stockton may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Stockton, UT water safe to drink?
Stockton's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (86.5/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 620 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Stockton
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Stockton's water quality assessment. Grade: A- (86.5/100).
Contaminants: Revised Total Coliform Rule.
1 health-based. Contaminants: Groundwater Rule.
Contaminants: Nitrate.
Federal disaster declaration (FEMA DR-4011). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3223). Coastal Storm event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Stockton's water supply.
Well within EPA limits.
Violation history
Stockton's water system has 176 total violations on record, including 2 health-based violations. 3 remain unresolved.
Flood & environmental risk
Tooele County has experienced 5 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 Stockton's water come from?
Stockton's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 620 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment.
What Stockton residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Stockton'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.
Stockton'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
Top industrial polluters within 10 miles of Stockton
Industrial polluters nearby
Reported releases to surface water by facilities near Stockton, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
HUNTER PANELS A DIV OF CARLISLE CONSTRUCTION MATERIALS TOOELE, UT84074 | — | — | 5.5 mi |
U.S. TOOELE ARMY DEPOT SOUTH STOCKTON, UT84071 | — | — | 6.3 mi |
U.S. ARMY TOOELE ARMY DEPOT TOOELE, UT840745003 | — | — | 6.5 mi |
GENEVA ROCK PRODUCTS INC. - TOOELE TOOELE, UT84074 | — | — | 8.7 mi |
AIRGAS NITROUS OXIDE CORP TOOELE, UT84074 | — | — | 6.4 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites within 10 miles of Stockton
Superfund sites nearby
Federally tracked hazardous-waste sites on the EPA National Priorities List. Proximity does not necessarily indicate tap-water contamination — the connection depends on hydrology and treatment.
- JACOBS SMELTER1.6 mi
- TOOELE ARMY DEPOT NORTH AREA6.0 mi
Source: EPA Superfund National Priorities List
Drought conditions
D3 — extreme droughtTooele County is currently in D3 (extreme 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
Tooele County has experienced 5 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. | 1.5 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Stockton compares by contaminant
Explore where Stockton ranks among all Utah cities for specific contaminants.
Water source & infrastructure
Where Stockton's water comes from
Stockton's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by local government ownership and serves approximately 620 people through 1 water system.
Water systems serving Stockton
| System Name | PWSID | Population | Source |
|---|---|---|---|
| STOCKTON TOWN WATER SYSTEM | UTAH23010 | 620 | SW |
How Stockton compares
Full Utah rankings →Stockton's score of 86.5/100 is above the average of 50/100 among major Utah cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Utah rankings →About Stockton, UT
Wikipedia →Stockton is a town in Tooele County, Utah, United States. It is part of the Salt Lake City, Utah Metropolitan Statistical Area. As of the 2020 census, Stockton had a population of 621.
Learn more about your water
Guides and resources related to Stockton's water quality findings.
Explore water quality across Tooele
Frequently asked questions
Is Stockton, UT tap water safe to drink?
Stockton's water quality earned a grade of A- (86.5/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #42 out of 177 cities tested in Utah.
What contaminants are in Stockton's water?
Lead was measured at 1.5 ppb (90th percentile). 176 violations are on record.
How is Stockton'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 Stockton?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Stockton's water come from?
Stockton's water is sourced from Surface water. The city has 1 water system serving approximately 620 residents.
What health violations has Stockton's water system had?
Stockton has 2 health-based violations on record. The most recent violation was recorded in May 2016. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 3 violations remain unresolved.
How does Stockton's water compare to other cities?
Stockton ranks #42 out of 177 cities in Utah (better than 76% of state cities) and #4694 out of 15744 cities nationally (70th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Stockton's small water system affect quality?
Stockton's system serves approximately 620 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 176 violations on record.