The water in 33137
Your water utility
Miami-Dade Water and Sewer Department
System: Main System
Water system ID: 4130871
pH
Alkaline
pH 9.04
- Acidic
- Neutral
- Slightly alkaline
- Alkaline
8.5 or above on the pH scale.
Reported between 8.4 and 9.59.
Your water's figures
- Total alkalinity
- 72.5 mg/L as CaCO3Source
- Hardness
- 61.6 mg/L as CaCO3Source
- Total dissolved solids
- 183 mg/LSource
- Sodium
- 33 mg/LSource
- Disinfectant
- Chloramine · 2.5 ppmSource
- Treatment
- Lime softening at the Alexander Orr, Jr., Hialeah and John E. Preston plants, which feed one common distribution system; air stripping at Hialeah and enhanced softening at Preston. Source water: the Biscayne Aquifer.
Sodium is reported as an average of 33 ppm over a range of 23 to 33 ppm, and the chloramine residual as 2.5 ppm over a range from non-detect to 4.0 ppm. Fluoridation was discontinued on 6 June 2025 (County Resolution R-370-25, Florida SB 700); a residual of 0.1 to 0.3 ppm is naturally occurring. The annual report prints no pH, total alkalinity, hardness or total dissolved solids. The figures in the table come from the laboratory results this system reports to the Florida Department of Environmental Protection, so they can differ from the report's numbers quoted in this note.
Sources
- 2025 annual water quality report, Miami-Dade Water and Sewer Department (2025) Read the report
- Florida DEP — laboratory results the system reports to the State (2024) Open the document
- Florida DEP — laboratory results the system reports to the State (2022) Open the document
Figures measured in 2024.
ZIP assignment: Of the part of this ZIP code inside a public water system's service area, about 97% is this system's (US EPA Community Water System Service Area Boundaries, 2025; ZIP shape: 2020 Census ZCTA). Read the report
Tap water changes with the season and with the plumbing in your building. What your utility measures at the plant is not always what comes out of your tap.
What an alkaline system changes
Our systems filter what your utility leaves behind and raise the pH of the water you drink at home. Ask us what that would look like at your address.