NEW DESIGN - FREDERICK COUNTY
MD · PWS ID MD0100030 · Community water system
103
contaminants tested
19
detected
74,911
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFPeA | 0.0033 ug/L | 1/4 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 120 UG/L | 331/331 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 54.8 UG/L | 328/328 | SYR4 | 2012–2019 |
| Chloroform | 81.4 UG/L | 255/255 | SYR4 | 2012–2019 |
| Bromodichloromethane | 26.7 UG/L | 245/245 | SYR4 | 2012–2019 |
| Dibromochloromethane | 17.9 UG/L | 235/236 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 23.3 UG/L | 233/233 | SYR4 | 2012–2015 |
| Dichloroacetic Acid | 26.8 UG/L | 232/232 | SYR4 | 2012–2015 |
| Dibromoacetic acid | 4.9 UG/L | 188/217 | SYR4 | 2012–2015 |
| Bromoform | 2.8 UG/L | 111/235 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 4.4 UG/L | 32/235 | SYR4 | 2012–2015 |
| Nitrate | 7200 UG/L | 28/28 | SYR4 | 2012–2018 |
| Nitrate-Nitrite | 8000 UG/L | 20/20 | SYR4 | 2015–2019 |
| Fluoride | 760 UG/L | 18/21 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 1.8 UG/L | 18/234 | SYR4 | 2012–2015 |
| Barium | 94 UG/L | 15/23 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0070 mg/L | 14/14 | LCR | 2019 |
| Chromium | 1 UG/L | 3/23 | SYR4 | 2012–2019 |
| Dalapon | 2.22 UG/L | 1/13 | SYR4 | 2012–2018 |
84 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-PF3ONSADONAAntimony, TotalArsenicAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECadmiumCarbofuranCarbon tetrachlorideChlordaneDICHLOROMETHANEDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebETHYLENE DIBROMIDEEndrinEthylbenzeneGross Alpha, Excl. Radon and UGross Beta Particle ActivityHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAAOXAMYLPFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFHxSPFMBAPFMPAPFNAPFOAPFOSPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene