Agency Village, SD vs Rapid City, SD
Which City Has Better Water Quality?
Agency Village, SD and Rapid City, SD currently share an identical average WaterQ score, each scoring 95 out of 100. Both cities currently carry an A grade overall. Because a WaterQ score is an aggregate across all public water systems serving a city, near-identical scores can still mask differences at the system level, so residents of either city should review their specific water system's record for the most relevant detail.
Rapid City, SD is the larger of the two, with 84,637 more residents than Agency Village. Rapid City is served by 4 public water systems, compared with 1 in Agency Village — a difference of 3 systems. A larger number of systems often reflects a more fragmented distribution network spanning multiple utilities, suburbs, or rural service areas, while a single large utility serving a big population can benefit from economies of scale in treatment and monitoring, but may also face more complex, aging infrastructure to maintain.
For residents of either Agency Village or Rapid City, the most useful next step is to look up the specific water system that serves your address, since city-wide averages combine results from every system in the area. Visit the Agency Village or Rapid City city pages below for a breakdown of local systems, recent violations, and contaminant-specific data, or browse WaterQ's contaminants directory to learn what each measured substance means for health.
Detailed Comparison
| Metric | Agency Village | Rapid City |
|---|---|---|
| Water Quality Score | 95 | 95 |
| Grade | A | A |
| Water Systems | 1 | 4 |
| Population | 1,180 | 85,817 |
| County | ||
| State | SD | SD |
Analysis
Water Filtration Recommendations: Agency Village & Rapid City
Comparing point-of-use protection between Agency Village and Rapid City. If either water system has recorded disinfectant byproducts (THMs/HAAs), lead line risks, or hard minerals, a certified filter provides reliable household protection.
APEC Water Systems ROES-50 5-Stage Reverse Osmosis System
Removes up to 99% of 1,000+ contaminants including Lead, Chlorine, PFAS, Fluoride, Arsenic, and TDS.
Waterdrop G3P800 Tankless Reverse Osmosis System
800 GPD high capacity, 3:1 pure-to-drain ratio, smart LED faucet displaying real-time TDS and filter life.
Aquasana 3-Stage Under Sink Water Filter System (AQ-5300+)
Reduces 77 contaminants including 99.6% of Lead and PFOA/PFOS while retaining healthy minerals (calcium, magnesium).
Frizzlife Under Sink Water Filter System (MK99)
Directly hooks into cold water line with 0.5-micron precision. Quick-change twist-in filter cartridges.
ZeroWater 5-Stage 22-Cup Ready-Read Filter Dispenser
5-stage ion exchange removes 99.6% of total dissolved solids. Built-in digital TDS meter included.
Clearly Filtered Water Pitcher with Affinity Filtration
Independently tested against 365+ contaminants including PFAS, microplastics, lead, fluoride, and glyphosate.
Brita Elite Water Filter Pitcher (Monterey)
Reduces 99% of Lead and 30+ contaminants. Each Elite filter lasts 6 months (120 gallons) — 3x longer than standard.
AquaBliss High Output Revitalizing Shower Filter
Quickly neutralizes chlorine, heavy metals, pesticides, and scale, preventing dry itchy skin and damaged hair.
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Frequently asked questions
Which city has better tap water quality: Agency Village or Rapid City?
Agency Village and Rapid City currently have similar overall WaterQ scores. Review each city page for recent test and violation details.
How are Agency Village and Rapid City water scores calculated?
WaterQ scores are based on EPA-reported drinking water data, including contaminant detections, violations, and compliance records across local systems.
Where can I view full reports for Agency Village and Rapid City?
Use the city detail pages to see water systems, score breakdowns, and trend context for Agency Village, SD and Rapid City, SD.