CITY OF ROUND ROCK
TX · PWS ID TX2460003 · Community water system
108
contaminants tested
27
detected
130,662
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBS | 0.0067 ug/L | 2/10 | 2025 |
| PFPeA | 0.0067 ug/L | 2/10 | 2025 |
| PFBA | 0.0051 ug/L | 1/10 | 2025 |
| PFHxA | 0.0037 ug/L | 1/10 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| COPPER, FREE | 1700 UG/L | 310/313 | SYR4 | 2012–2018 |
| Dibromochloromethane | 31.3 UG/L | 264/264 | SYR4 | 2012–2019 |
| Bromodichloromethane | 30.9 UG/L | 260/264 | SYR4 | 2012–2019 |
| Chloroform | 34.6 UG/L | 259/264 | SYR4 | 2012–2019 |
| TTHM | 77.1 UG/L | 250/251 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 34.5 UG/L | 250/250 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 13.7 UG/L | 249/250 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 17.2 UG/L | 247/250 | SYR4 | 2012–2019 |
| Bromoform | 23.4 UG/L | 238/264 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 15.5 UG/L | 192/250 | SYR4 | 2012–2019 |
| Lead | 42 UG/L | 175/313 | SYR4 | 2012–2018 |
| Nitrate | 5900 UG/L | 50/50 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 3.6 UG/L | 42/250 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 5.6 UG/L | 15/250 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0081 mg/L | 14/14 | LCR | 2023 |
| Fluoride | 330 UG/L | 11/11 | SYR4 | 2012–2019 |
| Barium | 53.7 UG/L | 9/9 | SYR4 | 2013–2019 |
| Nitrate-Nitrite | 5790 UG/L | 7/7 | SYR4 | 2012–2015 |
| CYANIDE | 120 UG/L | 6/8 | SYR4 | 2014–2019 |
| lithium | 13.5 ug/L | 6/10 | UCMR-5 | 2025 |
| Atrazine | 0.1800 UG/L | 2/11 | SYR4 | 2012–2019 |
| Arsenic | 1.68 UG/L | 1/9 | SYR4 | 2013–2019 |
| Selenium | 4.38 UG/L | 1/9 | SYR4 | 2013–2019 |
81 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, TotalAsbestosBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumCombined UraniumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebETHYLENE DIBROMIDEEndrinEthylbenzeneGross Alpha, Excl. Radon and UGross Beta Particle ActivityHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFDAPFDoAPFEESAPFHpAPFHpSPFHxSPFMBAPFMPAPFNAPFOAPFOSPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene