Caffeine
Status: No national drinking water standard exists
Caffeine, from coffee and other beverages, is a key indicator of water contamination from wastewater effluent.
2017-2019:
FOUND
1
states detected
11
utilities detected
392,000
people served
States reporting caffeine in drinking water
| UTILITIES WITH CONTAMINATION | |||
|---|---|---|---|
| State | Utilities | People Served | |
| California | 11 | 392,151 | |
MORE
LESS
Filtering technologies that reduce caffeine
Activated Carbon
Reverse Osmosis
Utilities with the highest amounts of caffeine, 2017-2019
ALL UTILITIES
LARGE UTILITIES
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Los Angeles County Waterworks District 40 Reg. 39-Rock Creek* | Alhambra, CA | 1 of 1 | 0.0680 ppb | 1,305 |
| Elsinore Valley Municipal Water District* | Lake Elsinore, CA | 1 of 2 | 0.0290 ppb | 142,264 |
| Olivenhain Municipal Water District | Encinitas, CA | 1 of 6 | 0.00933 ppb | 63,000 |
| Golden State Water Company - Arden Water Services | Rancho Cordova, CA | 1 of 7 | 0.00771 ppb | 5,653 |
| California Water Service Company - Dixon | San Jose, CA | 1 of 15 | 0.00413 ppb | 9,278 |
| Vallecitos Water District | San Marcos, CA | 1 of 27 | 0.00367 ppb | 94,871 |
| City of Carlsbad | Carlsbad, CA | 1 of 27 | 0.00367 ppb | 84,838 |
| Rainbow Municipal WD | Fallbrook, CA | 1 of 27 | 0.00367 ppb | 19,611 |
| Rincon Del Diablo MWD(ID-1) | Escondido, CA | 1 of 27 | 0.00367 ppb | 24,545 |
| Ramona Municipal WD | Ramona, CA | 1 of 27 | 0.00367 ppb | 40,000 |
| Valley Center MWD* | Valley Center, CA | 1 of 27 | 0.00367 ppb | 25,450 |
| San Diego County Water Authority* | Escondido, CA | 1 of 27 | 0.00367 ppb | 0 |
| Castaic Lake Water Agency* | Santa Clarita, CA | 1 of 18 | 0.00333 ppb | 0 |
| Camp Pendleton (South) | Camp Pendleton, CA | 1 of 48 | 0.00146 ppb | 39,400 |
| Sacramento Suburban Water District* | Sacramento, CA | 1 of 102 | 0.000510 ppb | 171,200 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Caffeine, but it likely has the contaminant in its water supply.
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Elsinore Valley Municipal Water District* | Lake Elsinore, CA | 1 of 2 | 0.0290 ppb | 142,264 |
| Olivenhain Municipal Water District | Encinitas, CA | 1 of 6 | 0.00933 ppb | 63,000 |
| Vallecitos Water District | San Marcos, CA | 1 of 27 | 0.00367 ppb | 94,871 |
| City of Carlsbad | Carlsbad, CA | 1 of 27 | 0.00367 ppb | 84,838 |
| Rainbow Municipal WD | Fallbrook, CA | 1 of 27 | 0.00367 ppb | 19,611 |
| Rincon Del Diablo MWD(ID-1) | Escondido, CA | 1 of 27 | 0.00367 ppb | 24,545 |
| Ramona Municipal WD | Ramona, CA | 1 of 27 | 0.00367 ppb | 40,000 |
| Valley Center MWD* | Valley Center, CA | 1 of 27 | 0.00367 ppb | 25,450 |
| Camp Pendleton (South) | Camp Pendleton, CA | 1 of 48 | 0.00146 ppb | 39,400 |
| Sacramento Suburban Water District* | Sacramento, CA | 1 of 102 | 0.000510 ppb | 171,200 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Caffeine, but it likely has the contaminant in its water supply.