Overview
HCFC-22 is a refrigerant, and EPA classes it as one. It reaches water from leaks, disposal and manufacturing. EPA monitored it nationwide in 2013 to 2015.
In Florida, HCFC-22 (chlorodifluoromethane) was found in 28 community water systems serving about 4,932,107 people. Nobody has set a legal limit for it, so no reading here counts as an exceedance and no utility is required to do anything about it.
Where it comes from: Refrigerant leaks and disposal; industrial discharge.
The standards
Legal limit (MCL)
No federal limit
Enforceable. A utility must stay at or under this.
Federal health goal (MCLG)
Not set
Health-based, not enforceable. Often lower than the limit, sometimes zero.
Health goal
Not set
Nobody has published a health goal for this substance, official or otherwise.
Health effects the EPA associates with it: EPA published no reference concentration for HCFC-22 in its national survey, so there is no federal number to compare a reading against.
The health goal is set on health alone. The legal limit is set as close to it as is technically and economically feasible, so treatment cost and available technology are written into the number a utility is measured against. A system at or under the limit is meeting the standard it is required to meet. Both numbers are shown so the distance between them is visible.
What removes it
It is volatile, so aeration strips it and activated carbon adsorbs it.
Treatment guidance describes the methods generally used for this contaminant. What your own tap actually carries depends on your plumbing and your service line as much as on the utility, which is what a test at the house tells you and an annual report cannot.
Where in Florida
CountySystemsOver limit
Miami-Dade County2,605,200 people served4NonePalm Beach County825,201 people served3NoneBroward County757,407 people served9NoneEscambia County255,457 people served2NoneLeon County200,480 people served1NoneOrange County124,841 people served2NonePolk County35,239 people served1NoneHillsborough County31,250 people served1NonePasco County29,117 people served1NonePinellas County28,875 people served1NoneLake County24,798 people served1NoneWalton County12,243 people served1NoneGilchrist County1,999 people served1NoneHighest reported levels
Water systemReadingOf limit
MDWASA - Main SystemMiami · Miami-Dade County0.5 ug/L-Palm Beach County Water UtilitiesWest Palm Beach · Palm Beach County0.32 ug/L-Emerald Coast Utilities Authority (ECUA)Pensacola · Escambia County0.92 ug/L-Tallahassee, City ofTallahassee · Leon County0.32 ug/L-Pembroke Pines, City ofPembroke Pines · Broward County0.6 ug/L-Fort Lauderdale, City ofFt Lauderdale · Broward County0.72 ug/L-North Miami BeachNorth Miami Beach · Miami-Dade County0.085 ug/L-Hollywood, City ofHollywood · Broward County0.508 ug/L-Boca Raton WTPBoca Raton · Palm Beach County0.21 ug/L-Seacoast Utilities AuthorityPalm Beach Gardens · Palm Beach County0.16 ug/L-OCUD/Southern Water SysOrlando · Orange County0.11 ug/L-Homestead, City ofHomestead · Miami-Dade County0.41 ug/L-Coral Springs, City ofCoral Springs · Broward County0.14 ug/L-BCWWS 2aPompano Beach · Broward County0.21 ug/L-Coconut Creek, City ofCoconut Creek · Broward County0.16 ug/L-MDWASA/Rex UtilitiesMiami · Miami-Dade County1.3 ug/L-University of Central FloridaOrlando · Orange County0.095 ug/L-Auburndale, City ofAuburndale · Polk County0.1 ug/L-City of Temple Terrace UtilityTemple Terrace · Hillsborough County0.1 ug/L-Zephyrhills City ofZephyrhills · Pasco County5 ug/L-Tarpon Springs Water SystemTarpon Springs · Pinellas County0.095 ug/L-Oakland Park City ofOakland Park · Broward County0.62 ug/L-Davie, Town Of, #3 & #5Davie/Hollywood · Broward County0.086 ug/L-Lake Utility Services INC NorthClermont · Lake County0.087 ug/L-University of West FloridaPensacola · Escambia County0.12 ug/L-Know when your water changes
We will email you when new readings, violations or health goals land for your system.
Or schedule a water consultation.
Data Sources
EPA SDWISSystem identity, population, countyret. 2026
FDEPFlorida drinking-water chemical monitoringret. 2026
CCREach utility’s own annual reportret. 2026
CA OEHHACalifornia public health goals, the health-based benchmark where one is publishedret. 2026
FWROur own benchmarks, only where no government body has published one, each citing the official source it is built onret. 2026
These figures describe water as delivered by each utility, not what your home’s plumbing adds after it arrives. Informational; not a substitute for testing your own tap.
