DCWA KNIGHTSVILLE (SC1820001)
SC · PWS ID SC1820001 · Community water system
107
contaminants tested
23
detected
40,141
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 | 4/12 | 2025 |
| PFHxA | 0.0062 ug/L | 4/12 | 2025 |
| PFOA | 0.0065 ug/L | 4/12 | 2025 |
| PFOS | 0.0081 ug/L | 4/12 | 2025 |
| PFPeA | 0.0072 ug/L | 4/12 | 2025 |
| PFBA | 0.0050 ug/L | 1/12 | 2025 |
| PFHpA | 0.0030 ug/L | 1/12 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 15.43 UG/L | 122/122 | SYR4 | 2012–2019 |
| Chloroform | 23.14 UG/L | 122/122 | SYR4 | 2012–2019 |
| TTHM | 72.29 UG/L | 122/122 | SYR4 | 2012–2019 |
| Dibromochloromethane | 29.88 UG/L | 117/122 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 50.6 UG/L | 116/122 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 11.52 UG/L | 114/122 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 34.71 UG/L | 112/122 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 14.46 UG/L | 94/122 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 11.66 UG/L | 53/122 | SYR4 | 2012–2019 |
| COPPER, FREE | 20 UG/L | 30/50 | SYR4 | 2014–2017 |
| Bromoform | 27.52 UG/L | 25/122 | SYR4 | 2012–2019 |
| Fluoride | 2400 UG/L | 16/16 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0120 mg/L | 15/15 | LCR | 2023 |
| lithium | 12.7 ug/L | 8/12 | UCMR-5 | 2025 |
| Lead | 9.7 UG/L | 3/50 | SYR4 | 2014–2017 |
| Di(2-ethylhexyl) phthalate | 1.4 UG/L | 1/17 | SYR4 | 2013–2019 |
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-GAMMABariumBenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumCombined Radium (-226 and -228)DICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDinosebDiquatETHYLENE DIBROMIDEEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon and UHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorMonochloroacetic acidNEtFOSAANFDHANMeFOSAANitrateNitrate-NitriteNitriteOXAMYLPFDAPFDoAPFEESAPFHpSPFHxSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
SUMMERVILLE