ZipCheckup grade for 57702: B.
This ZIP has a few items worth a quick check.
Your top priority: use a filter certified to reduce PFAS; check which ones. Check your ZIP → EPA PFAS info
Rapid City, SD (57702): PFAS Detected in Mapped Water Systems - 83/100
EPA data combined for 17 water systems mapped to this ZIP (largest mapped system: Rapid City)
EPA records for the water systems mapped to 57702 in Rapid City, SD contain 2 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 2 violations (non-health) (since 2021).
- Lead The reported 90th-percentile lead result of 0.006 mg/L is below the EPA action level, but EPA's health goal for lead is zero; filtration is advisable.
- PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
- Radon EPA Zone 2 - county-level radon potential, not a home measurement.
- Flood 43 cumulative NFIP claim records. Check the current FEMA map for a specific address.
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This report sorts findings for 57702 in Rapid City into two severity tiers using its own criteria: lead above the EPA action level, unresolved violations on record or a PFAS result above the level of an EPA PFAS maximum contaminant level (enforced from 2029) for the critical tier, and a PFAS detection or elevated carbon monoxide risk for the high-priority tier. In the available data, the high-priority tier holds 1 and the critical tier hold none; each card below describes one finding.
Score Breakdown
Overall Home Safety Score: 83/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (8) HIGH
Your Water System
ZIP code 57702 in Rapid City, South Dakota is mapped to the water system Rapid City (EPA ID: SD4600406). This system provides water to approximately 72,009 people from surface water sources.
There are 17 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Rapid City | SD4600406 | 72,009 | Surface water |
| Chapel Lane Water Company | SD4600264 | 1,200 | Groundwater |
| Southern Black Hills Water | SD4602309 | 947 | Groundwater |
| Colonial Pine Hills Sanitary Distric | SD4600263 | 1,200 | Groundwater |
| Canyon Springs Water and Sewer Distr | SD4602311 | 163 | Groundwater |
Other Water Quality Reports in South Dakota
- 57001 (Alcester) - 2 violations recorded for mapped water systems
- 57002 (Aurora)
- 57003 (Baltic)
- 57004 (Beresford) - 2 violations recorded for mapped water systems
- 57005 (Brandon) - 3 violations recorded for mapped water systems
- 57006 (Brookings) - 3 violations recorded for mapped water systems
- 57007 (Brookings)
- 57010 (Burbank)
- 57012 (Canistota)
- 57013 (Canton) - 3 violations recorded for mapped water systems
- 57014 (Centerville) - 2 violations recorded for mapped water systems
- 57015 (Chancellor) - 2 violations recorded for mapped water systems
- 57016 (Chester) - 1 violation recorded for mapped water systems
- 57017 (Colman) - 1 violation recorded for mapped water systems
- 57018 (Colton)
- 57020 (Crooks)
- 57021 (Davis)
- 57022 (Dell Rapids) - 1 violation recorded for mapped water systems
- 57024 (Egan) - 3 violations recorded for mapped water systems
- 57025 (Elk Point)
Nearby Water Quality Reports
- 57709 (Rapid City) - 5 mi
- 57751 (Keystone) - 8 mi
- 57703 (Rapid City) - 10 mi - 10 violations recorded for mapped water systems
- 57718 (Black Hawk) - 10 mi - 2 violations recorded for mapped water systems
- 57745 (Hill City) - 12 mi
- 57701 (Rapid City) - 12 mi - 2 violations recorded for mapped water systems
- 57744 (Hermosa) - 15 mi
- 57769 (Piedmont) - 16 mi - 2 violations recorded for mapped water systems
- 57719 (Box Elder) - 17 mi - 12 violations recorded for mapped water systems
- 57759 (Nemo) - 17 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Rapid City (SD4600406) on EPA.gov.
4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 57702.
Detected compounds: PFHxS.
Highest measured level: 0.0056 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (11) MODERATE
Home & Infrastructure (6) MODERATE
Possible home maintenance concerns - talk to a local expert.
Call (855) 384-4856Paid Partner This is a free service. You will be connected with an independent service provider. We may receive compensation.
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Rapid City
Based on local data for ZIP 57702, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Home & Flood Insurance
The ZIP code for this report in Rapid City has 43 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.
Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote
Check Your Flood Zone (Free)FEMA flood map lookup - see if your property is in a flood zone
Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)
Gutter Installation & Repair
The median home in 57702 was built around 1971. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsWindow Replacement
The median build year of homes in Rapid City is 1971; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.
Typical cost: Window replacement: typically $300–$800 per window installed
Estimate Your Home Maintenance CostsRoofing Inspection & Repair
Homes built around 1971 may be on their second or third roof. A professional inspection can catch damage before leaks start.
Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500
Estimate Your Home Insurance NeedsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 57702 safe to drink?
EPA SDWIS records 2 violations since 2021 across the water systems mapped to ZIP 57702 (primary system: Rapid City), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 57702's water come from?
The recorded water source for Rapid City, a system mapped to ZIP code 57702, is Surface water. This system serves approximately 72,009 people.
How does Rapid City water compare to the national average?
Rapid City's Home Safety Score ranks better than 67% of U.S. ZIP codes, and at or above 88% within South Dakota.
How can I get my water tested in Rapid City?
If Rapid City supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 57702 tap water?
The Lead and Copper Rule record selected for 57702 reports a 90th-percentile lead result of 0.006 mg/L for a water system mapped to this ZIP (record date 2024-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 57702?
57702 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Pennington County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 57702's water?
Yes, PFAS have been detected in samples from water systems mapped to 57702. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
What does the NFIP claim history show for ZIP 57702?
FEMA records contain 43 flood insurance claims filed in ZIP code 57702; the recorded rated-zone value (the most frequent one if there are several claims) is C, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Rapid City, SD (57702): PFAS Detected in Mapped Water Systems - 83/100. https://zipcheckup.com/report/57702/
@misc{zipcheckup-report-57702,
author = {{ZipCheckup}},
title = {{Rapid City, SD (57702): PFAS Detected in Mapped Water Systems - 83/100}},
year = {2026},
url = {https://zipcheckup.com/report/57702/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 57702
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 57709 | Rapid City, SD | 5.4 mi | N/A | 0 |
| 57751 | Keystone, SD | 8.5 mi | C | 0 |
| 57703 | Rapid City, SD | 9.6 mi | C | 10 |
| 57718 | Black Hawk, SD | 10.2 mi | B | 2 |
| 57745 | Hill City, SD | 11.8 mi | N/A | 0 |
| 57701 | Rapid City, SD | 12.2 mi | B | 2 |
| 57744 | Hermosa, SD | 14.9 mi | N/A | 0 |
| 57769 | Piedmont, SD | 15.6 mi | B | 2 |
| 57719 | Box Elder, SD | 16.5 mi | B | 12 |
| 57759 | Nemo, SD | 17.0 mi | N/A | 0 |
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