Is Agency Village, 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 ↓
76/100
waterverge.com Agency Village, SD — Water Quality Report
Agency Village's drinking water received a grade of B (76 out of 100), indicating good water quality. The city's 7 water systems serve approximately 2,019 residents using purchased ground water.
Lead levels were measured at 0.4 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 166 violations on record, including 8 health-based violations. 10 remain unresolved.
What to know about Agency Village's water
Agency Village ranks #111 out of 141 cities in South Dakota for water quality, placing it among the lowest-rated in the state.
Agency Village 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, Agency Village may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Agency Village, SD water safe to drink?
Agency Village's drinking water has significant quality concerns based on EPA testing data. With a grade of B (76/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 7 water systems serve approximately 2,019 residents using groundwater (wells).
Recent water quality updates for Agency Village
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Agency Village's water quality assessment. Grade: B (76/100).
1 health-based. Contaminants: Revised Total Coliform Rule, Groundwater Rule.
Federal disaster declaration (FEMA DR-4718). Flood event — may have impacted local water infrastructure.
1 health-based. Contaminants: Revised Total Coliform Rule.
Federal disaster declaration (FEMA DR-4440). Flood event — may have impacted local water infrastructure.
Contaminants: E. COLI.
Key contaminant findings
Based on the most recent EPA sampling data for Agency Village's water supply.
Well within EPA limits.
Violation history
Agency Village's water system has 166 total violations on record, including 8 health-based violations. 10 remain unresolved. 3 violations were issued in the last 5 years.
Flood & environmental risk
Roberts County has experienced 10 federally declared disasters since 1986. 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 Coulee.
Where does Agency Village's water come from?
Agency Village's drinking water comes from groundwater (wells), supplied by 7 water systems serving approximately 2,019 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 Coulee (river).
What Agency Village residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Agency Village'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.
Agency Village'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 Agency Village
Industrial polluters nearby
Reported releases to surface water by facilities near Agency Village, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
WOODLAND CABINETRY INC SISSETON, SD57262 | — | — | 6.0 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Roberts County has experienced 10 federally declared disasters since 1986. 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. | 0.4 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Agency Village compares by contaminant
Explore where Agency Village ranks among all South Dakota cities for specific contaminants.
Water source & infrastructure
Where Agency Village's water comes from
Agency Village 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 Agency Village'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 native american ownership and serves approximately 2,019 people through 7 water systems.
Water bodies near Agency Village
Agency Village is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Agency Village
| System Name | PWSID | Population | Source |
|---|---|---|---|
| OLD AGENCY WATER SYSTEM | 084690458 | 1,180 | GWP |
| LONG HOLLOW WATER SYSTEM | 084690457 | 265 | GWP |
| ENEMY SWIM WATER SYSTEM | 084690460 | 230 | SWP |
| PEEVER FLATS WATER SYSTEM | 084690461 | 129 | GWP |
| RED IRON LAKE WATER SYSTEM | 084690456 | 95 | GWP |
| FINLEY HEIGHTS WATER SYSTEM | 084690462 | 60 | GWP |
| VEBLEN FLATS | 084690463 | 60 | GWP |
How Agency Village compares
Full South Dakota rankings →Agency Village's score of 76/100 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 →ZIP codes served by Agency Village
The water systems serving Agency Village cover 1 ZIP code. Select any ZIP to see which water systems serve that area.
About Agency Village, SD
Wikipedia →Agency Village is an unincorporated area and census-designated place (CDP) in Roberts County, South Dakota, United States. It is the headquarters of the Sisseton Wahpeton Oyate and home to Sisseton Wahpeton College. Since 2020, the CDP includes the community known as Goodwill. The population of the CDP was 776 at the 2020 census.
Learn more about your water
Guides and resources related to Agency Village's water quality findings.
Frequently asked questions
Is Agency Village, SD tap water safe to drink?
Agency Village's water quality earned a grade of B (76/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #111 out of 141 cities tested in South Dakota.
What contaminants are in Agency Village's water?
Lead was measured at 0.4 ppb (90th percentile). 166 violations are on record.
How is Agency Village'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 Agency Village?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Agency Village's water come from?
Agency Village's water is sourced from Purchased ground water. The city has 7 water systems serving approximately 2,019 residents.
What health violations has Agency Village's water system had?
Agency Village has 8 health-based violations on record. The most recent violation was recorded in August 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 10 violations remain unresolved.
Is Agency Village's groundwater at risk of contamination?
Agency Village 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 166 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 Agency Village's water compare to other cities?
Agency Village ranks #111 out of 141 cities in South Dakota (better than 21% of state cities) and #9423 out of 15744 cities nationally (40th percentile). The grade of B reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.