No PFAS were detected in any of the 4 samples EPA's program collected.
Web Water Development Association is a public water system drawing on surface water, based in Aberdeen, South Dakota, serving about 20,750 people, including Bradley, Bristol, Eden, Grenville, Raymond, Roslyn. Under EPA's Fifth Unregulated Contaminant Monitoring Rule it was tested for 29 PFAS and lithium 4 times across 1 sampling point between Jan 2024 and Oct 2024.
None of the 29 PFAS were found at or above EPA's minimum reporting levels (2 to 20 ppt depending on the compound).
Not detected: PFHxA, PFHxS, PFDA, PFOA, PFOS, PFNA, PFDoA, PFHpA, PFBS, PFTA, PFTrDA, NMeFOSAA, PFUnA, PFPeS, NEtFOSAA, 8:2 FTS, PFHpS, NFDHA, PFMBA, PFEESA, PFMPA, 11Cl-PF3OUdS, 4:2 FTS, 6:2 FTS, PFBA, HFPO-DA, ADONA, 9Cl-PF3ONS, PFPeA.
Lithium, tested in the same program: highest 46 ppb, detected in 4 of 4 samples. EPA's health-based screening level is 10 ppb.
In April 2024 EPA set enforceable limits of 4 ppt for PFOA and PFOS, 10 ppt each for PFHxS, PFNA and GenX, and a hazard index of 1 for mixtures. Utilities were given until 2029 to comply. In May 2026 EPA proposed keeping only the PFOA and PFOS limits and moving that deadline to 2031. Until that proposal is final, the 2024 limits stand.
Compliance is judged on a running annual average at each entry point, so we show the average at this system's worst sampling point next to its single highest result. UCMR 5 results do not by themselves put a utility in or out of compliance.
No PFAS action is needed on these results. If your water tastes or smells of chlorine, a whole-house city water filter is the usual fix.
All 49 tested systems in South Dakota
57217 57219 57232 57239 57258 57261 57273 57274 57322 57348 57401 57420 57422 57424 57426 57427 57428 57429 57433 57434 57435 57436 57437 57438 57440 57441 57442 57445 57446 57448 57449 57450 57451 57452 57455 57456 57457 57460 57461 57465 57466 57467 57468 57469 57470 57471 57472 57473 57474 57475 57477 57479 57481 57601 57631 57632 57646 57648 58436 58439 58573 58581
As reported by the utility to EPA. Neighbouring ZIPs are often split between systems; your water bill names yours.
Well & Tap. "PFAS in Web Water Development Association water: EPA UCMR 5 results." Data: U.S. EPA Fifth Unregulated Contaminant Monitoring Rule, final release August 2026, PWSID SD4601089. https://wellandtap.com/pfas/south-dakota/web-water-development-association/
Source: U.S. EPA, UCMR 5 occurrence data, final release August 2026 (PWSID SD4601089). Population: EPA SDWIS. Averages count results below the reporting level as zero, the same convention EPA uses for running annual averages. Full method.
