Is Faulkton, SD Tap Water Safe to Drink?
Graded B, with 10 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
79.6/100
waterverge.com Faulkton, SD — Water Quality Report
Faulkton's drinking water received a grade of B (79.6 out of 100), indicating good water quality. The city's 4 water systems serve approximately 1,083 residents using purchased surface water.
Lead levels were measured at 1.0 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 177 violations on record, including 25 health-based violations. 10 remain unresolved.
What to know about Faulkton's water
Faulkton ranks #98 out of 141 cities in South Dakota for water quality, placing it below 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, Faulkton may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Faulkton, SD water safe to drink?
Faulkton's drinking water has significant quality concerns based on EPA testing data. With a grade of B (79.6/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 4 water systems serve approximately 1,083 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Faulkton
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Faulkton's water quality assessment. Grade: B (79.6/100).
Federal disaster declaration (FEMA DR-4718). Flood event — may have impacted local water infrastructure.
Contaminants: Revised Total Coliform Rule.
Contaminants: Revised Total Coliform Rule.
Contaminants: Asbestos.
Federal disaster declaration (FEMA DR-4440). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Faulkton's water supply.
Well within EPA limits.
Violation history
Faulkton's water system has 177 total violations on record, including 25 health-based violations. 10 remain unresolved. 2 violations were issued in the last 5 years.
Flood & environmental risk
Faulk County has experienced 9 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.
Where does Faulkton's water come from?
Faulkton's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 4 water systems serving approximately 1,083 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment.
What Faulkton residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Faulkton'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.
Faulkton'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
Flood & disaster history
Faulk County has experienced 9 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. | 1.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Faulkton compares by contaminant
Explore where Faulkton ranks among all South Dakota cities for specific contaminants.
Water source & infrastructure
Where Faulkton's water comes from
Faulkton'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 1,083 people through 4 water systems.
Water systems serving Faulkton
| System Name | PWSID | Population | Source |
|---|---|---|---|
| FAULKTON | SD4600125 | 693 | SWP |
| BRENTWOOD COLONY | SD4602066 | 137 | GW |
| BLUMENGARD COLONY | SD4602057 | 133 | GW |
| EVERGREEN COLONY | SD4602050 | 120 | GW |
How Faulkton compares
Full South Dakota rankings →Faulkton's score of 79.6/100 is above the average of 66/100 among major South Dakota cities. It outscores 6 of 10 nearby cities.
Nearby cities
View South Dakota rankings →About Faulkton, SD
Learn more about your water
Guides and resources related to Faulkton's water quality findings.
Explore water quality across Faulk
Frequently asked questions
Is Faulkton, SD tap water safe to drink?
Faulkton's water quality earned a grade of B (79.6/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #98 out of 141 cities tested in South Dakota.
What contaminants are in Faulkton's water?
Lead was measured at 1.0 ppb (90th percentile). 177 violations are on record.
How is Faulkton'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 Faulkton?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Faulkton's water come from?
Faulkton's water is sourced from Purchased surface water. The city has 4 water systems serving approximately 1,083 residents.
What health violations has Faulkton's water system had?
Faulkton has 25 health-based violations on record. The most recent violation was recorded in June 2022. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 10 violations remain unresolved.
How does Faulkton's water compare to other cities?
Faulkton ranks #98 out of 141 cities in South Dakota (better than 30% of state cities) and #8204 out of 15744 cities nationally (48th percentile). The grade of B reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.