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Water quality report

Rapid City, SD
water quality

Drinking water across Rapid City’s community water systems, from EPA public records.

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100

Excellent

City-wide average score

44

Systems serving this city

2

With PFAS detected (UCMR5)

1

Above an EPA PFAS limit

0

Unresolved health violations

Across all community water systems EPA records map to Rapid City. PFAS figures are from EPA UCMR5 (2023–25) monitoring; not every system was sampled.

Community water systems serving Rapid City

RAPID CITY~72,009 people served 99› RAPID VALLEY SANITARY DISTRICT~11,408 people served 81› COLONIAL PINE HILLS SANITARY DISTRIC~1,200 people served 100› CHAPEL LANE WATER COMPANY~1,200 people served 100› WONDERLAND HOMES~750 people served 100› SUN VALLEY DEVELOPMENT~650 people served 100› HISEGA MEADOWS WATER INC~491 people served 100› HART RANCH~438 people served 100› PINE GROVE~425 people served 100› SOUTH CANYON COUNTRY ESTATES~420 people served 100› THE RANCH AT BLACK GAP~375 people served 100› PRAIRIE ACRES LLC~350 people served 100› STAGEBARN SANITARY DISTRICT~295 people served 100› PRAIRIE ACRES NORTH~288 people served 100› CARRIAGE HILLS~267 people served 100› HAPPY HOLIDAY RV RESORT~264 people served 100› BOULDER PARK WATER USERS ASSOCIATION~200 people served 100› PRAIRIE ACRES SOUTH~170 people served 100› STRATO RIM ESTATES WATER COMPANY~170 people served 100› PONDEROSA MOBILE HOME RANCH~150 people served 100› B & J MOBILE HOME PARK~135 people served 100› MIDLAND HEIGHTS~130 people served 100› EAST RIDGE ACRES~118 people served 100› ELK CREEK VILLAGE~110 people served 100› PONDEROSA RIDGE~90 people served 100› SPEARFISH MEADOWS~87 people served 100› ROCK RIDGE COURT~74 people served 100› SIPHON HILL WATER ASSOCIATION~68 people served 100› ELK VALLEY RANCHETTES~62 people served 100› ELK CREEK VALLEY VIEW ASSOC~52 people served 100› WEST NIKE SUBDIVISION~50 people served 100› WHISPERING PINES WATER ASSOCIATION~48 people served 100› GOLDEN HILLS HOMES~47 people served 100› BOXELDER HIGH COUNTRY ASSOCIATION~45 people served 100› CEDAR GULCH 1~45 people served 100› HIGHLAND HILLS~38 people served 100› RIMROCK RIDGE WATER ASSOCIATION~35 people served 100› RIMROCK HEIGHTS HOMEOWNERS ASSOCIATI~35 people served 100› HAPPY HOLIDAY WATER ASSOCIATION~35 people served 100› PONDEROSA PARK~31 people served 100› HIDDEN VALLEY WATER ASSOCIATION INC~27 people served 100› PINEVIEW WATER ASSOCIATION~25 people served 100› DARLINGTON ESTATES~25 people served 100› PONDEROSA WATER COMPANY~25 people served 100›

Rapid City water FAQ

How is Rapid City's water quality scored?

PurityRadar computes a 0–100 score from public EPA records for the community water systems serving Rapid City. The city-wide figure shown is the average of those systems.

Where does the data come from?

EPA SDWIS — the federal Safe Drinking Water Information System — covering active community water systems and their health-based violations. Every figure traces back to that public record.

Is this a substitute for testing my tap?

No. System-level data can't account for your home's own plumbing (lead service lines, fixtures). For health decisions, test your tap with a certified lab and confirm with your utility.

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