Water Quality Status
City of Brisbane and Guadalupe Valley Municipal Improvement District (GVMID)
Current Water Quality Status
| THMs | HAA5 | Lead | Copper | TC / E. coli | |
| Brisbane's Water Quality Status | 40 40 |
39 36 |
3.6 | 120 | neg. / neg. |
| GVMID's Water Quality Status | 28 | 19 | 2.0 | 86 | neg. / neg. |
| MCL/AL | 80 ug/l | 60 ug/l | 15 ug/l | 1300 ug/l | Presence of TC / Presence of E. coli |
| Testing Frequency | Quarterly | Quarterly | Triennially | Triennially | Weekly / Weekly |
| Next Sampling | Mar. 2024 | Mar. 2024 | Aug. 2025 | Aug. 2025 | Weekly / Weekly |
AL = Action Level
HAA5 = Haloacetic Acids
MCL = Maximum Contaminant Levels
ND = Non Detect
TC = Total Coliform
THMs = Trihalomethanes
Last updated: March 7, 2024
| All water quality standards are being met. | |
| A yellow light indicates a drinking water standard has been exceeded but no immediate action is required; the water is still safe to drink per EPA drinking water standards. | |
| A red light indicates a drinking water standard has been exceeded and immediate action is required; the City will provide any necessary actions for water customers to take. |
Supporting Documents
Water Quality Report 2022 (404 KB) 
