Rapid Valley Tap Water Quality Report
Rapid Valley's water has 1 contaminant above EPA MCLGs. Consider using a certified water filter for additional protection.
Water system
RAPID VALLEY SANITARY DISTRICT
People Served
10,000
Health-based violations since 2020
0
RAPID VALLEY SANITARY DISTRICT. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Is Rapid Valley Tap Water Safe to Drink?
We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems. Rapid Valley's water has 1 contaminant above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
RAPID VALLEY SANITARY DISTRICT, Rapid Valley's water system, serves 10,000 people. Water quality testing is conducted regularly and reported to the EPA.
In EPA's 2023–2026 UCMR 5 testing, RAPID VALLEY SANITARY DISTRICT measured lithium at up to 23.4 µg/L, which EPA counts as above its health reference level of 10 µg/L. That level is a screening value EPA uses to decide what to study further, not a legal limit, and this result does not change this page's water-quality summary.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in South Dakota
Rapid Valley Water Service Areas
What these numbers actually mean for Rapid Valley, SD
We read Rapid Valley, SD’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 1 contaminant above EPA MCLGs
- 23 results on file
- 23 PFAS compounds on record
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Recommended Water Filters for Rapid Valley
Based on Rapid Valley's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
Culligan
ZeroWater
NSF Certified:
Flow Rate
1.9 gpm
Daily Production
1 gpd
Highlights:
- Compact design
- Easy to set up
- Affordable
- NSF-42, NSF-53, NSF-401 certified
Removes 19 contaminants:
+14 more
Strontium, Molybdenum, Fluoride, Uranium, Lead, Total PFAS, Chlorine, 25, Phosphorus, Bicarbonate, Calcium, Carbonate, Magnesium, Sodium
Santevia
Bath Filter
NSF Certified:
Flow Rate
0.36 gpm
Highlights:
- Organic cotton design reduces plastic used in construction
- Affordable upfront & ongoing cost
- The only bath filter that removed 100% chlorine with “normal” faster faucet flow
Removes 1 contaminants:
Waterdrop
A1
NSF Certified:
Flow Rate
1 gpm
Highlights:
- Performance certified
- Lower price than Philips
- Hot water dispensing
- Compact design
Removes 5 contaminants:
Whirlpool Corporation
W11256135
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.7 gpm
Removes 19 contaminants:
+14 more
Benzene, Carbofuran, Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Chlorobenzene, Cryptosporidium, Ethylbenzene, Lead, Mercury, Metolachlor, Tetrachloroethylene, Toxaphene, Turbidity
Test Your Water Quality
Professional laboratory testing provides accurate, detailed analysis of your drinking water.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
PFAS Forever Chemicals Test
$339.95
Specialized test for PFOA, PFOS, and 24 other forever chemicals. Essential for areas near military bases, airports, or industrial sites.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
On a private well near Rapid Valley? Public-water results do not apply to private wells. See Pennington County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Frequently Asked Questions About Rapid Valley Tap Water
Rapid Valley's water has 1 contaminant above EPA MCLGs. While the water meets federal legal limits, we recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach RAPID VALLEY SANITARY DISTRICT. For a problem with your water now (discolored water, no water, low pressure, a leak), contact RAPID VALLEY SANITARY DISTRICT directly.
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