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Chlorine Free in U.S. tap water
93 public water systems across 13 U.S. states report Chlorine Free in their annual Consumer Confidence Report. 2 sit at or above the federal limit.
At or above the federal limit (2)
| Water system | Measured | vs. limit |
|---|---|---|
| Avila Beach Community Services District — Avila Beach, Ca, CA 2023 annual report | 2.5–4.18 mg/L | 1.0× the limit |
| Pismo Beach Water Department — Pismo Beach, Ca, CA 2023 annual report | 2.5–4.18 mg/L | 1.0× the limit |
Approaching the limit (1)
| Water system | Measured | vs. limit |
|---|---|---|
| Lopez Project — San Luis Obispo, Ca, CA 2023 annual report | 3.43 mg/L | 0.9× the limit |
Within the federal limit (87)
Showing 50 of 87. The full list is in the JSON API.
Frequently asked
+What is Chlorine Free?
Chlorine Free is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+What is the federal limit for Chlorine Free in drinking water?
The federal MCL for Chlorine Free is 4 mg/L. The EPA enforces this against the regulated reporting statistic (typically a running annual average or 90th percentile), not a single-sample spike.
+How many U.S. water systems have Chlorine Free over the federal limit?
2 of the 93 public water systems on The Water Map report Chlorine Free at or above its federal limit, spanning 13 U.S. states. The full list is on this page.
+How can I check if Chlorine Free is in my city's tap water?
Search your city on The Water Map (https://www.thewatermap.com/) or browse the list on this page. Every U.S. public water utility is required to publish an annual Consumer Confidence Report that lists every contaminant it measured, including Chlorine Free.