STILLWATER UTILITIES AUTHORITY
OK · PWS ID OK1021220 · Community water system
84
contaminants tested
30
detected
53,000
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHxS | 0.0064 ug/L | 4/4 | 2024 |
| PFOS | 0.0086 ug/L | 4/4 | 2024 |
| PFHxA | 0.0049 ug/L | 3/4 | 2024 |
| PFPeA | 0.0044 ug/L | 2/4 | 2024 |
| PFBS | 0.0030 ug/L | 1/4 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Fluoride | 1100 UG/L | 99/99 | SYR4 | 2012–2019 |
| TTHM | 34.9 UG/L | 86/86 | SYR4 | 2012–2019 |
| Bromodichloromethane | 14.4 UG/L | 81/81 | SYR4 | 2012–2019 |
| Chloroform | 21 UG/L | 81/81 | SYR4 | 2012–2019 |
| Dibromochloromethane | 8.95 UG/L | 74/81 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 39.7 UG/L | 69/86 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 24.3 UG/L | 61/76 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 8.06 UG/L | 56/76 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 4.99 UG/L | 52/76 | SYR4 | 2012–2019 |
| COPPER, FREE | 298 UG/L | 46/133 | SYR4 | 2012–2018 |
| LEAD SUMMARY | 0.0030 mg/L | 18/18 | LCR | 2025 |
| Bromoform | 4.15 UG/L | 16/81 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 6.32 UG/L | 8/76 | SYR4 | 2012–2019 |
| Lead | 26.5 UG/L | 7/133 | SYR4 | 2012–2018 |
| Nitrate-Nitrite | 1210 UG/L | 7/7 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 2.09 UG/L | 5/76 | SYR4 | 2012–2019 |
| Barium | 52 UG/L | 4/4 | SYR4 | 2012–2015 |
| lithium | 21.6 ug/L | 4/4 | UCMR-5 | 2024 |
| Bromate | 9.3 UG/L | 3/92 | SYR4 | 2012–2019 |
| Nitrate | 1111 UG/L | 2/2 | SYR4 | 2019 |
| CYANIDE | 15 UG/L | 1/1 | SYR4 | 2012 |
| Combined Radium (-226 and -228) | 0.1580 PCI/L | 1/1 | SYR4 | 2014 |
| Gross Alpha, Excl. Radon and U | 1.05 PCI/L | 1/1 | SYR4 | 2014 |
| Gross Beta Particle Activity | 5 PCI/L | 1/1 | SYR4 | 2014 |
| Selenium | 8 UG/L | 1/4 | SYR4 | 2012–2015 |
54 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalArsenicBenzeneBeryllium, TotalCHLOROBENZENECadmiumCarbon tetrachlorideChromiumCombined UraniumDICHLOROMETHANEEthylbenzeneHFPO-DAMercuryNEtFOSAANFDHANMeFOSAANitritePFBAPFDAPFDoAPFEESAPFHpAPFHpSPFMBAPFMPAPFNAPFOAPFPeSPFTAPFTrDAPFUnAStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene