CRYSTAL LAKE
IL · PWS ID IL1110150 · Community water system
108
contaminants tested
28
detected
40,661
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBS | 0.0046 ug/L | 1/10 | 2025 |
| PFPeA | 0.0045 ug/L | 1/10 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| cis-1,2-Dichloroethylene | 48.6 UG/L | 103/139 | SYR4 | 2012–2019 |
| Trichloroethylene | 9.19 UG/L | 96/138 | SYR4 | 2012–2019 |
| Bromodichloromethane | 22.4 UG/L | 88/88 | SYR4 | 2012–2019 |
| Chloroform | 28.1 UG/L | 88/88 | SYR4 | 2012–2019 |
| TTHM | 75.8 UG/L | 88/88 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 31.2 UG/L | 88/88 | SYR4 | 2012–2019 |
| Dibromochloromethane | 28.5 UG/L | 87/88 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 19.1 UG/L | 80/88 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 9.55 UG/L | 71/88 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 11.3 UG/L | 53/88 | SYR4 | 2012–2019 |
| COPPER, FREE | 1730 UG/L | 52/60 | SYR4 | 2014–2017 |
| Bromoform | 17.9 UG/L | 41/88 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0124 mg/L | 24/24 | LCR | 2025 |
| Combined Radium (-226 and -228) | 5.51 PCI/L | 21/28 | SYR4 | 2014–2019 |
| Barium | 1710 UG/L | 15/15 | SYR4 | 2012–2018 |
| Fluoride | 1080 UG/L | 15/15 | SYR4 | 2012–2018 |
| Monobromoacetic acid | 1.56 UG/L | 15/88 | SYR4 | 2012–2019 |
| Xylenes, Total | 12.1 UG/L | 15/133 | SYR4 | 2012–2019 |
| trans-1,2-Dichloroethylene | 1.66 UG/L | 15/115 | SYR4 | 2012–2019 |
| Lead | 41 UG/L | 11/60 | SYR4 | 2014–2017 |
| Monochloroacetic acid | 3.87 UG/L | 9/88 | SYR4 | 2012–2019 |
| Ethylbenzene | 1.37 UG/L | 3/113 | SYR4 | 2012–2019 |
| 1,2-Dichloroethane | 37 UG/L | 2/114 | SYR4 | 2012–2019 |
| CYANIDE | 5.48 UG/L | 2/15 | SYR4 | 2012–2018 |
| Di(2-ethylhexyl) phthalate | 2.62 UG/L | 2/40 | SYR4 | 2012–2019 |
| Toluene | 1.79 UG/L | 1/114 | SYR4 | 2012–2019 |
80 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalArsenicAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitrateNitrate-NitriteNitriteOXAMYLPFBAPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFHxSPFMBAPFMPAPFNAPFOAPFOSPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl chloridelithiumo-Dichlorobenzenep-Dichlorobenzene
Areas served
CRYSTAL LAKE