COTTONWOOD WSD
CO · PWS ID CO0118020 · Community water system
109
contaminants tested
26
detected
10,867
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHxA | 0.0054 ug/L | 3/6 | 2024 |
| PFPeA | 0.0062 ug/L | 3/6 | 2024 |
| PFBS | 0.0047 ug/L | 2/6 | 2024 |
| PFBA | 0.0056 ug/L | 1/6 | 2024 |
| PFOA | 0.0040 ug/L | 1/6 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| LEAD SUMMARY | 0.0100 mg/L | 28/28 | LCR | 2025 |
| Barium | 173 UG/L | 16/16 | SYR4 | 2013–2019 |
| Fluoride | 1500 UG/L | 15/15 | SYR4 | 2013–2019 |
| TTHM | 8.13 UG/L | 15/22 | SYR4 | 2012–2019 |
| Nitrate | 160 UG/L | 8/76 | SYR4 | 2012–2019 |
| lithium | 29.3 ug/L | 6/6 | UCMR-5 | 2024 |
| Total Haloacetic Acids (HAA5) | 4 UG/L | 4/22 | SYR4 | 2012–2019 |
| Bromodichloromethane | 1.2 UG/L | 2/6 | SYR4 | 2013–2019 |
| Bromoform | 1 UG/L | 2/6 | SYR4 | 2013–2019 |
| Chloroform | 1.2 UG/L | 2/6 | SYR4 | 2013–2019 |
| Dibromochloromethane | 1.8 UG/L | 2/6 | SYR4 | 2013–2019 |
| Gross Alpha, Excl. Radon and U | 6.26 PCI/L | 2/2 | SYR4 | 2012–2016 |
| Antimony, Total | 0.8500 UG/L | 1/15 | SYR4 | 2013–2019 |
| Combined Radium (-226 and -228) | 2.3 PCI/L | 1/5 | SYR4 | 2012–2019 |
| Combined Uranium | 22 UG/L | 1/2 | SYR4 | 2012–2016 |
| Dibromoacetic acid | 1.3 UG/L | 1/2 | SYR4 | 2019 |
| Dichloroacetic Acid | 1.6 UG/L | 1/2 | SYR4 | 2019 |
| Diquat | 0.3800 UG/L | 1/35 | SYR4 | 2013–2019 |
| Gross Beta Particle Activity | 13 PCI/L | 1/1 | SYR4 | 2012 |
| HEXACHLOROBENZENE | 0.0097 UG/L | 1/31 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 1.1 UG/L | 1/2 | SYR4 | 2019 |
83 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAArsenicAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorMonobromoacetic acidMonochloroacetic acidNEtFOSAANFDHANMeFOSAANitrate-NitriteNitriteOXAMYLPFDAPFDoAPFEESAPFHpAPFHpSPFHxSPFMBAPFMPAPFNAPFOSPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene