Contaminants in Florida water

121 measured · 393 readings over a legal limit

Every substance measured across Florida’s community water systems, with the number of systems that reported it and how many were above the federal legal limit. A substance appearing here means it was measured, not that it is unsafe.

Total Trihalomethanes (TTHM)21,273,042 people served · 58 over the legal limit1,329 systems Haloacetic Acids (HAA5)20,744,216 people served · 35 over the legal limit1,298 systems Sodium6,669,849 people served · 6 over the legal limit1,074 systems Total Dissolved Solids (TDS)4,362,588 people served1,065 systems Chloride3,835,336 people served1,062 systems Barium5,646,486 people served960 systems Sulfate3,496,741 people served927 systems pH4,132,269 people served879 systems Nitrate16,948,303 people served · 1 over the legal limit838 systems Manganese18,105,605 people served709 systems Fluoride8,891,654 people served · 1 over the legal limit692 systems Copper3,113,269 people served · 1 over the legal limit654 systems Foaming Agents (surfactants)1,155,977 people served529 systems Arsenic2,817,710 people served · 4 over the legal limit467 systems Iron1,152,773 people served465 systems Color2,588,786 people served453 systems Gross Alpha Emitters2,438,870 people served · 8 over the legal limit431 systems Zinc1,346,310 people served429 systems Odor2,524,828 people served288 systems HAA6Br (six brominated haloacetic acids)19,989,753 people served250 systems HAA9 (nine haloacetic acids)19,989,753 people served250 systems Strontium19,919,559 people served249 systems Uranium668,516 people served · 1 over the legal limit240 systems Chromium (total)1,294,266 people served223 systems Chromium-6 (hexavalent chromium)18,555,800 people served215 systems Chlorate17,057,070 people served201 systems Lead981,084 people served · 6 over the legal limit190 systems Vanadium17,437,313 people served184 systems Aluminum1,519,815 people served178 systems Selenium489,328 people served163 systems PFOS10,771,319 people served · 146 over the legal limit150 systems PFBS10,632,742 people served139 systems Molybdenum13,041,454 people served130 systems PFPeA11,663,452 people served127 systems PFOA8,684,215 people served · 107 over the legal limit109 systems PFHxA9,404,420 people served109 systems PFHxS8,121,206 people served · 11 over the legal limit108 systems Silver94,668 people served95 systems Nickel1,206,612 people served90 systems Nitrite6,935,566 people served88 systems Dalapon282,972 people served78 systems PFBA8,292,432 people served74 systems Mercury (inorganic)771,000 people served67 systems PFHpA7,244,282 people served64 systems 1,4-Dioxane6,258,361 people served44 systems Cyanide154,985 people served · 1 over the legal limit40 systems Thallium566,870 people served · 2 over the legal limit38 systems Cadmium46,863 people served · 1 over the legal limit33 systems Di(2-ethylhexyl)phthalate311,938 people served31 systems Xylenes (total)251,810 people served30 systems Antimony325,444 people served · 1 over the legal limit29 systems HCFC-22 (chlorodifluoromethane)4,932,107 people served28 systems Hexachlorocyclopentadiene637,307 people served28 systems 6:2 FTS4,623,127 people served25 systems Dichloromethane119,329 people served · 1 over the legal limit20 systems Beryllium462,716 people served · 1 over the legal limit18 systems Chloromethane1,444,290 people served16 systems Cobalt615,994 people served13 systems Benzo(a)pyrene (PAH)41,163 people served12 systems Toluene40,836 people served11 systems Ethylbenzene46,403 people served11 systems 2,4-D34,517 people served10 systems Heptachlor Epoxide71,680 people served10 systems Combined Radium (226 + 228)843,006 people served10 systems Germanium494,215 people served9 systems Pentachlorophenol2,393 people served9 systems Chloramines628,405 people served9 systems Tetrachloroethylene (PCE)502,975 people served8 systems PFNA2,830,340 people served · 1 over the legal limit8 systems cis-1,2-Dichloroethylene85,150 people served8 systems Trichloroethylene (TCE)476,227 people served7 systems 1,2-Dichloropropane59,098 people served7 systems 1,2,4-Trichlorobenzene3,657 people served7 systems 1-Butanol980,490 people served7 systems 1,2-Dichlorobenzene (o-DCB)50,628 people served7 systems Dibromochloropropane (DBCP)3,594 people served7 systems Chlordane10,846 people served7 systems Chlorine224,834 people served7 systems 1,1-Dichloroethylene275,689 people served6 systems p-Dichlorobenzene (1,4-DCB)50,358 people served6 systems Ethylene Dibromide (EDB)3,394 people served6 systems Atrazine439,369 people served6 systems 1,1,2-Trichloroethane33,259 people served5 systems Chlorobenzene35,817 people served5 systems Benzene35,817 people served5 systems Styrene35,817 people served5 systems Carbon Tetrachloride33,351 people served5 systems 1,2-Dichloroethane32,882 people served5 systems Diquat3,715 people served5 systems 8:2 FTS2,649,526 people served5 systems Dioxin (2,3,7,8-TCDD)15,937 people served4 systems Endrin2,003 people served4 systems Lindane2,155 people served4 systems Alachlor72,426 people served4 systems Oxamyl (Vydate)3,352 people served4 systems Picloram1,114 people served4 systems Endothall1,624 people served4 systems trans-1,2-Dichloroethylene33,017 people served4 systems 1,1,1-Trichloroethane33,017 people served4 systems PFPeS1,134,524 people served3 systems 2-Methoxyethanol146,950 people served3 systems Methoxychlor38,246 people served3 systems Di(2-ethylhexyl)adipate34,255 people served3 systems Simazine32,705 people served3 systems Toxaphene1,450 people served3 systems 2-Propen-1-ol (allyl alcohol)584,259 people served2 systems Permethrin212,537 people served2 systems Quinoline1,363,130 people served2 systems Polychlorinated Biphenyls (PCBs)875 people served2 systems Glyphosate875 people served2 systems Hexachlorobenzene875 people served2 systems Carbofuran875 people served2 systems Heptachlor875 people served2 systems 2,4,5-TP (Silvex)875 people served2 systems 4:2 FTS242,172 people served1 system Dinoseb425 people served1 system Asbestos92,219 people served1 system Chlorine Dioxide58,584 people served1 system Turbidity58,584 people served1 system Anatoxin-a347,800 people served1 system NEtFOSAA15,561 people served1 system

All 121 contaminants here have their own page. Every substance measured in Florida water gets one, whether it turned up in one system or a thousand, and whether or not anybody regulates it.