Is Aurora, SD Tap Water Safe to Drink?
Graded A, with 2 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
92.8/100
waterverge.com Aurora, SD — Water Quality Report
Aurora's drinking water received a grade of A (92.8 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 1,200 residents using purchased ground water.
Lead levels were measured at 2.0 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 13 violations on record, including 3 health-based violations. 2 remain unresolved.
What to know about Aurora's water
Aurora ranks #16 out of 141 cities in South Dakota for water quality, placing it above average in the state.
Aurora purchases its water from a regional wholesaler, meaning quality depends on both the supplier's treatment and the local distribution system's condition.
As a small community water system, Aurora may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Aurora, SD water safe to drink?
Aurora's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (92.8/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 1,200 residents using groundwater (wells).
Recent water quality updates for Aurora
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Aurora's water quality assessment. Grade: A (92.8/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: Chlorine.
1 health-based. Contaminants: Stage 1 Disinfectants and Disinfection Byproducts Rule.
Federal disaster declaration (FEMA DR-4440). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-1984). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Aurora's water supply.
Well within EPA limits.
Violation history
Aurora's water system has 13 total violations on record, including 3 health-based violations. 2 remain unresolved.
Flood & environmental risk
Brookings County has experienced 8 federally declared disasters since 1969. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Big Sioux River.
Where does Aurora's water come from?
Aurora's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,200 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Big Sioux River (river).
What Aurora residents can do
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.
Aurora'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 Aurora
Industrial polluters nearby
Reported releases to surface water by facilities near Aurora, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
VALERO RENEWABLE FUELS LLC* AURORA, SD57002 | — | — | 0.3 mi |
DAKTRONICS INC BROOKINGS, SD57006 | — | — | 3.8 mi |
SOLVENTUM BROOKINGS BROOKINGS, SD57006 | — | — | 4.3 mi |
TWIN CITY FAN COS BROOKINGS BROOKINGS, SD57006 | — | — | 4.2 mi |
GCC-BROOKINGS BROOKINGS, SD57006 | — | — | 6.8 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D1 — moderate droughtBrookings County is currently in D1 (moderate 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
Brookings County has experienced 8 federally declared disasters since 1969. 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. | 2.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Aurora compares by contaminant
Explore where Aurora ranks among all South Dakota cities for specific contaminants.
Water source & infrastructure
Where Aurora's water comes from
Aurora purchases its water supply from a regional wholesale provider rather than treating raw water directly.
Water quality depends on both the wholesaler's treatment standards and the condition of Aurora's local distribution pipes and storage facilities.
Purchased water systems are common in suburban areas and smaller communities that lack the infrastructure for independent treatment.
The system is operated by local government ownership and serves approximately 1,200 people through 1 water system.
Water bodies near Aurora
Aurora is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Aurora
| System Name | PWSID | Population | Source |
|---|---|---|---|
| AURORA | SD4600058 | 1,200 | GWP |
How Aurora compares
Full South Dakota rankings →Aurora's score of 92.8/100 is above the average of 66/100 among major South Dakota cities. It outscores 9 of 10 nearby cities.
Nearby cities
View South Dakota rankings →About Aurora, SD
Wikipedia →Aurora is a town in Brookings County, South Dakota, United States. The population was 1,047 at the 2020 census.
Learn more about your water
Guides and resources related to Aurora's water quality findings.
Explore water quality across Brookings
Frequently asked questions
Is Aurora, SD tap water safe to drink?
Aurora's water quality earned a grade of A (92.8/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #16 out of 141 cities tested in South Dakota.
What contaminants are in Aurora's water?
Lead was measured at 2.0 ppb (90th percentile). 13 violations are on record.
How is Aurora'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 Aurora?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Aurora's water come from?
Aurora's water is sourced from Purchased ground water. The city has 1 water system serving approximately 1,200 residents.
What health violations has Aurora's water system had?
Aurora has 3 health-based violations on record. The most recent violation was recorded in November 2020. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 2 violations remain unresolved.
Is Aurora's groundwater at risk of contamination?
Aurora 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 13 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 Aurora's water compare to other cities?
Aurora ranks #16 out of 141 cities in South Dakota (better than 89% of state cities) and #1117 out of 15744 cities nationally (93th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Aurora's small water system affect quality?
Aurora's system serves approximately 1,200 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 13 violations on record.