CITY OF ROCKWALL
TX · PWS ID TX1990001 · Community water system
44
contaminants tested
18
detected
55,250
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBA | 0.0096 ug/L | 3/3 | 2025 |
| PFHxA | 0.0063 ug/L | 3/3 | 2025 |
| PFPeA | 0.0070 ug/L | 3/3 | 2025 |
| PFBS | 0.0044 ug/L | 2/3 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 24.5 UG/L | 101/101 | SYR4 | 2012–2019 |
| Chloroform | 19.6 UG/L | 101/101 | SYR4 | 2012–2019 |
| Dibromochloromethane | 16.4 UG/L | 101/101 | SYR4 | 2012–2019 |
| TTHM | 71.4 UG/L | 101/101 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 41.4 UG/L | 101/101 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 8.1 UG/L | 101/101 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 21.8 UG/L | 97/101 | SYR4 | 2012–2019 |
| COPPER, FREE | 1200 UG/L | 89/90 | SYR4 | 2013–2017 |
| Dibromoacetic acid | 8.9 UG/L | 73/101 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 16.8 UG/L | 64/101 | SYR4 | 2012–2019 |
| Bromoform | 36 UG/L | 61/101 | SYR4 | 2012–2019 |
| Lead | 12.7 UG/L | 34/90 | SYR4 | 2013–2017 |
| Monochloroacetic acid | 10.6 UG/L | 33/101 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0100 mg/L | 17/17 | LCR | 2025 |
26 contaminants tested, none detected
11Cl-PF3OUdS4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAHFPO-DANEtFOSAANFDHANMeFOSAAPFDAPFDoAPFEESAPFHpAPFHpSPFHxSPFMBAPFMPAPFNAPFOAPFOSPFPeSPFTAPFTrDAPFUnAlithium