Miami-Dade County, Florida
Billing, service and outages are handled by the utility at its official website above. ScoreYourWater is not your water company and never handles water billing.
Miami-Dade Water and Sewer Department has a Water Score of 50 out of 100 (Weak) on our scale. 5 of 36 detected contaminants are above a published health guideline (2018-2024). EPA compliance: no open violations (July to September 2026 extract); this is public data, not a test of your tap.
Miami-Dade Water & Sewer Department's 2025 water quality report says it uses chloramine. 2025 water quality report
Coral Gables has 2 scored ZIP codes served mainly by 1 water utility. Water Scores range from 50 to 50, with a median of 50. The contaminant most often above a published health guideline is Arsenic, in 1 of 1 utility (EPA SDWA, EPA UCMR and Florida DEP data, 2020). Scored against health guidelines that are stricter than legal limits, using public utility data. Not a test of your tap.
| Utility | ZIP codes | People served | Water Score | Above guideline | Buys water from |
|---|---|---|---|---|---|
| Miami-Dade Water & Sewer Department | 2 | 2,377,460 | 50 Weak | 5 of 36 | No purchases recorded |
Counted once per utility. Source: EPA SDWA, EPA UCMR and Florida DEP data, 2018-2024.
| Contaminant | Utilities above guideline | ZIP codes | Highest level | Years |
|---|---|---|---|---|
| Arsenic | 1 of 1 | 2 | 425 times its guideline | 2020 |
| Bromodichloromethane | 1 of 1 | 2 | 143 times its guideline | 2020-2022 |
| Dibromochloromethane | 1 of 1 | 2 | 48 times its guideline | 2020-2022 |
| Chloroform | 1 of 1 | 2 | 45 times its guideline | 2020-2022 |
| Bromoform | 1 of 1 | 2 | 1.1 times its guideline | 2020-2022 |
A legal limit is an enforceable standard, set by the EPA under the Safe Drinking Water Act. Limits weigh health research together with the cost and feasibility of treatment. A health guideline is published by public-health sources and based on health research alone. A utility can meet every legal limit and still be above a published health guideline.
Miami-Dade Water and Sewer Department is the main water provider for Coral Gables. Some addresses can be served by a different system, so check your water bill: it names your utility.
Call (305) 665-7477 or visit https://www.miamidade.gov/global/water/water-quality-reports.page. Billing and outages are handled by the utility, not by ScoreYourWater.
1 utility is the main supplier for at least one scored ZIP code in Coral Gables. The largest by ZIP codes served: Miami-Dade Water & Sewer Department (2 ZIP codes). Source: EPA Water System Boundaries (CWS service area boundaries) v3.0, March 2026 release.
The Water Scores are 33114 (50) and 33124 (50). A score describes the utility's public test results for that ZIP code, not the water at any one tap (EPA SDWA, EPA UCMR and Florida DEP data, 2018-2024).
Arsenic (above its guideline in 1 of 1 utility, up to 425 times), Bromodichloromethane (above its guideline in 1 of 1 utility, up to 143 times) and Dibromochloromethane (above its guideline in 1 of 1 utility, up to 48 times). Source: EPA SDWA, EPA UCMR and Florida DEP data, 2018-2024.
Not among the main suppliers listed here. EPA SDWA records (July to September 2026 extract) show no purchases of water from another system by these utilities.
The score starts at 100. It goes down 8 for each contaminant above a cited health guideline whose source states a cancer basis, 5 for each other contaminant above its cited guideline, 5 for each of PFOA and PFOS averaging above the 4.0 ppt limit in EPA's 2024 PFAS rule, 10 for each contaminant whose average of all samples is above EPA's legal limit (instead of its guideline step), and 1 for each contaminant with a cited cancer-based guideline that is detected below it. Only guidelines with a cited document count. The lowest score is 5. Higher is better.
A legal limit is an enforceable standard, set by the EPA under the Safe Drinking Water Act. Limits weigh health research together with the cost and feasibility of treatment. A health guideline is published by public-health sources and based on health research alone. A utility can meet every legal limit and still be above a published health guideline.
We can't tell for any one home. Lead pipes and lead solder were banned for drinking water in 1986. In Coral Gables, 61% of homes were built before 1980 and 18% before 1950 (ACS 5-year 2020–2024, table B25034; the Census groups homes by decade, so 1980 is the closest cutoff to 1986). Older homes are more likely to have lead pipes or solder, but many don't. To check yours, look up your address in Miami-Dade Water and Sewer Department's lead service line inventory or test your water.
Our claims cover three results: chlorine and hardness at your kitchen tap, and dissolved solids at your drinking-water faucet. Guarantee terms ›