This page summarizes EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5, 2023–2025) drinking-water monitoring records linked to ZIP codes in California, as processed for the PFAS Estimator national dataset. Data updated: July 2026.
| Compound | Applicable threshold | ZIP codes detected | At/above threshold | Mean detected | Maximum detected |
|---|---|---|---|---|---|
| PFOA | 0.004 µg/L (MCL) | 318 (29.6% of state) | 318 (100.0%) — all detections at/above limit by construction | 0.0109 µg/L | 0.1883 µg/L |
| PFOS | 0.004 µg/L (MCL) | 388 (36.1% of state) | 388 (100.0%) — all detections at/above limit by construction | 0.017 µg/L | 0.2365 µg/L |
| PFHxS | 0.01 µg/L (MCL) | 416 (38.7% of state) | 96 (23.1% of detected) | 0.0096 µg/L | 0.2502 µg/L |
| PFNA | 0.01 µg/L (MCL) | 34 (3.2% of state) | 1 (2.9% of detected) | 0.0069 µg/L | 0.0102 µg/L |
| PFBS | 2.0 µg/L (HI reference) | 314 (29.2% of state) | not calculated¹ | 0.0066 µg/L | 0.0647 µg/L |
| Lithium | 7.36 µg/L (reference, not a regulatory limit) | 878 (81.6% of state) | 878 (100.0%) at/above reference | 53.2917 µg/L | 474.0 µg/L |
| PFPeA | — (no federal limit) | 404 (37.5% of state) | — | 0.0103 µg/L | 0.062 µg/L |
| PFBA | — (no federal limit) | 357 (33.2% of state) | — | 0.0095 µg/L | 0.028 µg/L |
| PFHpA | — (no federal limit) | 175 (16.3% of state) | — | 0.0078 µg/L | 0.0727 µg/L |
| 6:2 FTS | — (no federal limit) | 5 (0.5% of state) | — | 0.0187 µg/L | 0.0503 µg/L |
| PFDA | — (no federal limit) | 9 (0.8% of state) | — | 0.0037 µg/L | 0.0056 µg/L |
1076 ZIP codes with at least one recorded PFAS detection. Click a ZIP code to view its full compound-level results.
| ZIP code | Compounds detected | At/above threshold |
|---|---|---|
| 90001 | 1 | No |
| 90002 | 1 | No |
| 90003 | 1 | No |
| 90004 | 1 | No |
| 90005 | 1 | No |
| 90006 | 1 | No |
| 90007 | 1 | No |
| 90008 | 1 | No |
| 90010 | 1 | No |
| 90011 | 1 | No |
| 90012 | 1 | No |
| 90013 | 1 | No |
| 90014 | 1 | No |
| 90015 | 1 | No |
| 90016 | 1 | No |
| 90017 | 1 | No |
| 90018 | 1 | No |
| 90019 | 1 | No |
| 90020 | 1 | No |
| 90021 | 1 | No |
| 90022 | 5 | Yes (1) |
| 90023 | 5 | Yes (1) |
| 90024 | 1 | No |
| 90025 | 1 | No |
| 90026 | 1 | No |
| 90027 | 1 | No |
| 90028 | 1 | No |
| 90029 | 1 | No |
| 90030 | 1 | No |
| 90031 | 1 | No |
| 90032 | 5 | Yes (1) |
| 90033 | 5 | Yes (1) |
| 90034 | 1 | No |
| 90035 | 1 | No |
| 90036 | 1 | No |
| 90037 | 1 | No |
| 90038 | 1 | No |
| 90039 | 1 | No |
| 90040 | 8 | Yes (2) |
| 90041 | 1 | No |
| 90042 | 1 | No |
| 90043 | 1 | No |
| 90044 | 1 | No |
| 90045 | 1 | No |
| 90046 | 1 | No |
| 90047 | 1 | No |
| 90048 | 1 | No |
| 90049 | 1 | No |
| 90056 | 1 | No |
| 90057 | 1 | No |
| 90058 | 8 | Yes (2) |
| 90059 | 1 | No |
| 90061 | 1 | No |
| 90062 | 1 | No |
| 90063 | 5 | Yes (1) |
| 90064 | 1 | No |
| 90065 | 1 | No |
| 90066 | 1 | No |
| 90067 | 1 | No |
| 90068 | 1 | No |
| 90069 | 1 | No |
| 90071 | 1 | No |
| 90077 | 1 | No |
| 90094 | 1 | No |
| 90095 | 1 | No |
| 90201 | 8 | Yes (2) |
| 90209 | 1 | No |
| 90210 | 1 | No |
| 90211 | 1 | No |
| 90212 | 1 | No |
| 90213 | 1 | No |
| 90220 | 4 | Yes (2) |
| 90221 | 4 | Yes (2) |
| 90222 | 1 | No |
| 90230 | 1 | No |
| 90232 | 1 | No |
| 90240 | 8 | Yes (2) |
| 90241 | 8 | Yes (2) |
| 90242 | 7 | Yes (2) |
| 90245 | 1 | No |
| 90247 | 1 | No |
| 90248 | 2 | No |
| 90249 | 1 | No |
| 90250 | 1 | No |
| 90254 | 1 | No |
| 90255 | 7 | Yes (2) |
| 90260 | 1 | No |
| 90262 | 5 | Yes (2) |
| 90263 | 1 | No |
| 90264 | 1 | No |
| 90265 | 1 | No |
| 90266 | 1 | No |
| 90270 | 4 | Yes (2) |
| 90272 | 1 | No |
| 90274 | 1 | No |
| 90275 | 1 | No |
| 90277 | 2 | No |
| 90278 | 1 | No |
| 90280 | 7 | Yes (2) |
| 90291 | 1 | No |
| 90292 | 1 | No |
| 90293 | 1 | No |
| 90301 | 2 | Yes (1) |
| 90302 | 2 | Yes (1) |
| 90303 | 2 | Yes (1) |
| 90304 | 1 | No |
| 90305 | 2 | Yes (1) |
| 90401 | 6 | Yes (1) |
| 90402 | 6 | Yes (1) |
| 90403 | 6 | Yes (1) |
| 90404 | 6 | Yes (1) |
| 90405 | 6 | Yes (1) |
| 90501 | 2 | No |
| 90502 | 2 | No |
| 90503 | 2 | No |
| 90504 | 2 | No |
| 90505 | 2 | No |
| 90601 | 2 | No |
| 90602 | 5 | Yes (2) |
| 90603 | 5 | Yes (2) |
| 90604 | 7 | Yes (2) |
| 90605 | 7 | Yes (2) |
| 90606 | 5 | Yes (2) |
| 90620 | 7 | Yes (2) |
| 90621 | 7 | Yes (2) |
| 90623 | 1 | No |
| 90630 | 5 | Yes (2) |
| 90631 | 7 | Yes (2) |
| 90638 | 7 | Yes (2) |
| 90639 | 7 | Yes (2) |
| 90640 | 9 | Yes (2) |
| 90650 | 8 | Yes (3) |
| 90660 | 8 | Yes (2) |
| 90670 | 8 | Yes (3) |
| 90680 | 5 | Yes (2) |
| 90701 | 8 | Yes (3) |
| 90703 | 3 | Yes (1) |
| 90704 | 2 | No |
| 90706 | 8 | Yes (3) |
| 90707 | 8 | Yes (3) |
| 90710 | 2 | No |
| 90712 | 2 | Yes (1) |
| 90713 | 2 | Yes (1) |
| 90715 | 2 | Yes (1) |
| 90716 | 2 | Yes (1) |
| 90717 | 3 | Yes (1) |
| 90720 | 5 | Yes (2) |
| 90723 | 2 | No |
| 90731 | 1 | No |
| 90732 | 1 | No |
| 90740 | 1 | No |
| 90742 | 3 | Yes (1) |
| 90743 | 1 | No |
| 90744 | 2 | No |
| 90745 | 2 | No |
| 90746 | 2 | No |
| 90747 | 2 | No |
| 90755 | 1 | No |
| 90801 | 1 | No |
| 90802 | 1 | No |
| 90803 | 1 | No |
| 90804 | 1 | No |
| 90805 | 2 | No |
| 90806 | 1 | No |
| 90807 | 1 | No |
| 90808 | 3 | Yes (1) |
| 90810 | 2 | No |
| 90813 | 1 | No |
| 90814 | 1 | No |
| 90815 | 1 | No |
| 90822 | 1 | No |
| 90831 | 1 | No |
| 90833 | 1 | No |
| 91001 | 7 | Yes (3) |
| 91003 | 6 | Yes (3) |
| 91006 | 5 | Yes (2) |
| 91007 | 3 | Yes (2) |
| 91008 | 2 | Yes (1) |
| 91010 | 3 | Yes (2) |
| 91011 | 6 | Yes (1) |
| 91012 | 1 | No |
| 91016 | 5 | Yes (2) |
| 91020 | 6 | Yes (1) |
| 91040 | 1 | No |
| 91042 | 1 | No |
| 91046 | 6 | Yes (1) |
| 91101 | 1 | No |
| 91103 | 1 | No |
| 91104 | 7 | Yes (3) |
| 91105 | 1 | No |
| 91106 | 1 | No |
| 91107 | 2 | No |
| 91108 | 2 | No |
| 91201 | 8 | Yes (2) |
| 91205 | 8 | Yes (2) |
| 91206 | 8 | Yes (2) |
| 91208 | 8 | Yes (2) |
| 91214 | 8 | Yes (2) |
| 91301 | 1 | No |
| 91302 | 1 | No |
| 91303 | 1 | No |
| 91304 | 1 | No |
| 91306 | 1 | No |
| 91307 | 1 | No |
| 91311 | 1 | No |
| 91316 | 1 | No |
| 91321 | 8 | Yes (2) |
| 91324 | 1 | No |
| 91325 | 1 | No |
| 91326 | 1 | No |
| 91329 | 1 | No |
| 91330 | 1 | No |
| 91331 | 1 | No |
| 91335 | 1 | No |
| 91340 | 1 | No |
| 91342 | 1 | No |
| 91343 | 1 | No |
| 91344 | 1 | No |
| 91345 | 1 | No |
| 91350 | 8 | Yes (2) |
| 91351 | 8 | Yes (2) |
| 91352 | 1 | No |
| 91354 | 8 | Yes (2) |
| 91355 | 8 | Yes (2) |
| 91356 | 1 | No |
| 91360 | 1 | No |
| 91361 | 1 | No |
| 91362 | 1 | No |
| 91364 | 1 | No |
| 91367 | 1 | No |
| 91371 | 1 | No |
| 91377 | 1 | No |
| 91381 | 8 | Yes (2) |
| 91384 | 8 | Yes (2) |
| 91387 | 8 | Yes (2) |
| 91390 | 8 | Yes (2) |
| 91401 | 1 | No |
| 91402 | 1 | No |
| 91403 | 1 | No |
| 91405 | 1 | No |
| 91406 | 1 | No |
| 91411 | 1 | No |
| 91423 | 1 | No |
| 91436 | 4 | No |
| 91501 | 2 | No |
| 91502 | 2 | No |
| 91503 | 2 | No |
| 91504 | 5 | No |
| 91505 | 3 | No |
| 91506 | 2 | No |
| 91601 | 1 | No |
| 91602 | 1 | No |
| 91604 | 1 | No |
| 91605 | 1 | No |
| 91606 | 1 | No |
| 91607 | 1 | No |
| 91608 | 1 | No |
| 91702 | 2 | Yes (2) |
| 91706 | 4 | Yes (2) |
| 91709 | 6 | Yes (2) |
| 91710 | 7 | Yes (2) |
| 91719 | 2 | No |
| 91722 | 3 | Yes (2) |
| 91723 | 7 | Yes (2) |
| 91724 | 6 | Yes (2) |
| 91731 | 6 | Yes (2) |
| 91732 | 4 | Yes (1) |
| 91733 | 4 | Yes (1) |
| 91740 | 3 | Yes (2) |
| 91741 | 2 | Yes (2) |
| 91744 | 4 | No |
| 91745 | 4 | No |
| 91746 | 2 | No |
| 91748 | 4 | No |
| 91750 | 2 | Yes (1) |
| 91754 | 5 | Yes (1) |
| 91755 | 3 | No |
| 91761 | 7 | Yes (2) |
| 91762 | 5 | Yes (2) |
| 91763 | 4 | Yes (1) |
| 91764 | 5 | Yes (2) |
| 91765 | 4 | No |
| 91766 | 7 | Yes (2) |
| 91767 | 7 | Yes (2) |
| 91768 | 6 | Yes (2) |
| 91770 | 3 | No |
| 91771 | 6 | Yes (2) |
| 91773 | 2 | Yes (1) |
| 91775 | 1 | No |
| 91776 | 6 | Yes (2) |
| 91780 | 5 | Yes (2) |
| 91784 | 6 | Yes (2) |
| 91786 | 2 | No |
| 91789 | 5 | Yes (1) |
| 91790 | 6 | Yes (2) |
| 91791 | 7 | Yes (2) |
| 91792 | 4 | No |
| 91801 | 1 | No |
| 91803 | 2 | No |
| 91901 | 3 | No |
| 91902 | 8 | Yes (2) |
| 91910 | 8 | Yes (2) |
| 91911 | 8 | Yes (2) |
| 91913 | 1 | No |
| 91914 | 1 | No |
| 91915 | 1 | No |
| 91917 | 1 | No |
| 91932 | 1 | No |
| 91935 | 1 | No |
| 91941 | 1 | No |
| 91942 | 1 | No |
| 91945 | 1 | No |
| 91950 | 8 | Yes (2) |
| 91963 | 8 | Yes (4) |
| 91977 | 1 | No |
| 91978 | 1 | No |
| 92003 | 1 | No |
| 92004 | 1 | No |
| 92007 | 4 | Yes (1) |
| 92008 | 1 | No |
| 92009 | 1 | No |
| 92010 | 1 | No |
| 92011 | 1 | No |
| 92014 | 2 | No |
| 92019 | 2 | No |
| 92020 | 2 | No |
| 92021 | 2 | No |
| 92024 | 4 | Yes (1) |
| 92025 | 2 | No |
| 92026 | 2 | No |
| 92027 | 1 | No |
| 92028 | 1 | No |
| 92029 | 2 | No |
| 92037 | 1 | No |
| 92040 | 6 | Yes (1) |
| 92054 | 1 | No |
| 92055 | 3 | No |
| 92056 | 1 | No |
| 92057 | 1 | No |
| 92058 | 1 | No |
| 92059 | 4 | Yes (1) |
| 92064 | 1 | No |
| 92065 | 1 | No |
| 92067 | 2 | No |
| 92069 | 1 | No |
| 92071 | 2 | No |
| 92074 | 1 | No |
| 92075 | 2 | No |
| 92078 | 1 | No |
| 92081 | 1 | No |
| 92082 | 5 | Yes (2) |
| 92083 | 1 | No |
| 92084 | 1 | No |
| 92088 | 1 | No |
| 92091 | 2 | No |
| 92093 | 1 | No |
| 92101 | 1 | No |
| 92102 | 1 | No |
| 92103 | 1 | No |
| 92104 | 1 | No |
| 92105 | 1 | No |
| 92106 | 1 | No |
| 92107 | 1 | No |
| 92108 | 1 | No |
| 92109 | 1 | No |
| 92110 | 1 | No |
| 92111 | 1 | No |
| 92113 | 1 | No |
| 92114 | 1 | No |
| 92115 | 1 | No |
| 92116 | 1 | No |
| 92117 | 1 | No |
| 92118 | 1 | No |
| 92119 | 1 | No |
| 92120 | 1 | No |
| 92121 | 1 | No |
| 92122 | 1 | No |
| 92123 | 1 | No |
| 92124 | 1 | No |
| 92126 | 1 | No |
| 92127 | 1 | No |
| 92128 | 1 | No |
| 92129 | 1 | No |
| 92130 | 1 | No |
| 92131 | 1 | No |
| 92134 | 1 | No |
| 92135 | 1 | No |
| 92136 | 1 | No |
| 92139 | 1 | No |
| 92140 | 1 | No |
| 92145 | 1 | No |
| 92154 | 8 | Yes (2) |
| 92161 | 1 | No |
| 92173 | 1 | No |
| 92179 | 1 | No |
| 92182 | 1 | No |
| 92201 | 1 | No |
| 92210 | 1 | No |
| 92211 | 1 | No |
| 92220 | 2 | No |
| 92225 | 1 | No |
| 92227 | 1 | No |
| 92231 | 1 | No |
| 92233 | 1 | No |
| 92234 | 1 | No |
| 92243 | 1 | No |
| 92249 | 1 | No |
| 92250 | 1 | No |
| 92251 | 1 | No |
| 92252 | 1 | No |
| 92253 | 1 | No |
| 92254 | 1 | No |
| 92257 | 1 | No |
| 92260 | 2 | No |
| 92270 | 1 | No |
| 92274 | 1 | No |
| 92276 | 1 | No |
| 92277 | 1 | No |
| 92283 | 1 | No |
| 92284 | 3 | No |
| 92301 | 3 | Yes (1) |
| 92307 | 1 | No |
| 92308 | 1 | No |
| 92310 | 1 | No |
| 92311 | 4 | Yes (1) |
| 92313 | 8 | Yes (3) |
| 92314 | 6 | Yes (3) |
| 92315 | 5 | Yes (2) |
| 92317 | 7 | Yes (2) |
| 92320 | 5 | Yes (1) |
| 92321 | 7 | Yes (2) |
| 92324 | 6 | Yes (2) |
| 92325 | 7 | Yes (3) |
| 92342 | 7 | Yes (3) |
| 92345 | 7 | Yes (3) |
| 92346 | 7 | Yes (2) |
| 92350 | 2 | Yes (1) |
| 92352 | 8 | Yes (2) |
| 92354 | 6 | Yes (2) |
| 92359 | 4 | Yes (2) |
| 92363 | 1 | No |
| 92373 | 4 | Yes (2) |
| 92374 | 4 | Yes (2) |
| 92375 | 4 | Yes (2) |
| 92376 | 7 | Yes (1) |
| 92377 | 6 | Yes (1) |
| 92382 | 8 | Yes (3) |
| 92385 | 1 | No |
| 92386 | 5 | Yes (2) |
| 92392 | 1 | No |
| 92393 | 1 | No |
| 92394 | 1 | No |
| 92395 | 2 | No |
| 92397 | 2 | No |
| 92399 | 4 | Yes (1) |
| 92401 | 4 | No |
| 92404 | 7 | Yes (2) |
| 92405 | 4 | No |
| 92407 | 4 | No |
| 92408 | 6 | Yes (2) |
| 92410 | 7 | Yes (2) |
| 92411 | 4 | No |
| 92415 | 4 | No |
| 92500 | 3 | Yes (1) |
| 92501 | 5 | Yes (1) |
| 92503 | 6 | Yes (1) |
| 92504 | 6 | Yes (1) |
| 92505 | 5 | Yes (1) |
| 92506 | 5 | Yes (1) |
| 92507 | 8 | Yes (3) |
| 92508 | 5 | Yes (1) |
| 92509 | 5 | No |
| 92513 | 4 | No |
| 92517 | 4 | No |
| 92518 | 4 | No |
| 92530 | 2 | No |
| 92531 | 2 | No |
| 92532 | 5 | No |
| 92543 | 1 | No |
| 92544 | 1 | No |
| 92545 | 1 | No |
| 92548 | 1 | No |
| 92551 | 4 | No |
| 92553 | 5 | Yes (1) |
| 92555 | 2 | No |
| 92557 | 4 | No |
| 92562 | 8 | Yes (2) |
| 92563 | 5 | Yes (2) |
| 92564 | 4 | Yes (2) |
| 92567 | 5 | Yes (2) |
| 92570 | 5 | No |
| 92571 | 2 | No |
| 92572 | 1 | No |
| 92582 | 4 | Yes (2) |
| 92583 | 1 | No |
| 92584 | 2 | No |
| 92585 | 2 | No |
| 92586 | 2 | No |
| 92587 | 2 | No |
| 92590 | 8 | Yes (2) |
| 92591 | 8 | Yes (2) |
| 92592 | 8 | Yes (2) |
| 92593 | 3 | No |
| 92595 | 6 | Yes (2) |
| 92596 | 2 | No |
| 92602 | 3 | No |
| 92603 | 3 | No |
| 92604 | 3 | No |
| 92606 | 3 | No |
| 92609 | 2 | No |
| 92610 | 3 | No |
| 92612 | 3 | No |
| 92614 | 3 | No |
| 92617 | 3 | No |
| 92618 | 3 | No |
| 92619 | 3 | No |
| 92620 | 3 | No |
| 92623 | 3 | No |
| 92624 | 2 | No |
| 92625 | 1 | No |
| 92626 | 3 | No |
| 92627 | 3 | No |
| 92629 | 2 | No |
| 92630 | 3 | No |
| 92637 | 2 | No |
| 92643 | 5 | Yes (2) |
| 92646 | 3 | Yes (1) |
| 92647 | 3 | Yes (1) |
| 92648 | 3 | Yes (1) |
| 92649 | 3 | Yes (1) |
| 92650 | 3 | No |
| 92651 | 2 | No |
| 92653 | 2 | No |
| 92654 | 2 | No |
| 92655 | 3 | Yes (1) |
| 92656 | 2 | No |
| 92657 | 3 | No |
| 92660 | 5 | No |
| 92661 | 1 | No |
| 92662 | 3 | No |
| 92663 | 1 | No |
| 92666 | 5 | Yes (2) |
| 92672 | 1 | No |
| 92673 | 1 | No |
| 92674 | 1 | No |
| 92675 | 1 | No |
| 92676 | 3 | No |
| 92677 | 1 | No |
| 92679 | 3 | No |
| 92683 | 3 | Yes (1) |
| 92688 | 1 | No |
| 92691 | 2 | No |
| 92692 | 2 | No |
| 92694 | 1 | No |
| 92701 | 5 | Yes (2) |
| 92702 | 5 | Yes (2) |
| 92703 | 5 | Yes (2) |
| 92704 | 5 | Yes (2) |
| 92705 | 7 | Yes (3) |
| 92706 | 5 | Yes (2) |
| 92707 | 5 | Yes (2) |
| 92708 | 5 | Yes (2) |
| 92711 | 5 | Yes (2) |
| 92712 | 5 | Yes (2) |
| 92735 | 5 | Yes (2) |
| 92780 | 5 | Yes (1) |
| 92782 | 3 | No |
| 92799 | 5 | Yes (2) |
| 92801 | 7 | Yes (3) |
| 92802 | 7 | Yes (3) |
| 92803 | 7 | Yes (3) |
| 92804 | 7 | Yes (3) |
| 92805 | 7 | Yes (3) |
| 92806 | 7 | Yes (3) |
| 92807 | 7 | Yes (3) |
| 92808 | 7 | Yes (3) |
| 92821 | 1 | No |
| 92823 | 3 | No |
| 92831 | 8 | Yes (2) |
| 92832 | 8 | Yes (2) |
| 92833 | 8 | Yes (2) |
| 92835 | 8 | Yes (2) |
| 92840 | 6 | Yes (2) |
| 92841 | 6 | Yes (2) |
| 92842 | 6 | Yes (2) |
| 92843 | 6 | Yes (2) |
| 92844 | 6 | Yes (2) |
| 92845 | 6 | Yes (2) |
| 92846 | 6 | Yes (2) |
| 92860 | 7 | Yes (3) |
| 92861 | 7 | Yes (3) |
| 92865 | 7 | Yes (3) |
| 92866 | 7 | Yes (3) |
| 92867 | 7 | Yes (3) |
| 92868 | 7 | Yes (3) |
| 92869 | 7 | Yes (3) |
| 92870 | 7 | Yes (2) |
| 92877 | 4 | No |
| 92878 | 4 | No |
| 92879 | 6 | Yes (1) |
| 92880 | 4 | No |
| 92881 | 5 | No |
| 92882 | 5 | Yes (1) |
| 92883 | 5 | No |
| 92885 | 3 | No |
| 92886 | 7 | Yes (2) |
| 92887 | 3 | No |
| 93001 | 3 | No |
| 93002 | 3 | No |
| 93003 | 3 | No |
| 93004 | 3 | No |
| 93005 | 3 | No |
| 93006 | 3 | No |
| 93007 | 3 | No |
| 93010 | 5 | Yes (2) |
| 93012 | 3 | Yes (1) |
| 93013 | 1 | No |
| 93015 | 1 | No |
| 93020 | 1 | No |
| 93021 | 1 | No |
| 93022 | 1 | No |
| 93023 | 1 | No |
| 93024 | 1 | No |
| 93030 | 1 | No |
| 93033 | 1 | No |
| 93035 | 1 | No |
| 93036 | 1 | No |
| 93041 | 1 | No |
| 93060 | 1 | No |
| 93061 | 1 | No |
| 93063 | 1 | No |
| 93065 | 1 | No |
| 93101 | 1 | No |
| 93103 | 1 | No |
| 93105 | 1 | No |
| 93108 | 1 | No |
| 93109 | 1 | No |
| 93110 | 2 | No |
| 93111 | 2 | No |
| 93117 | 2 | No |
| 93215 | 1 | No |
| 93241 | 1 | No |
| 93242 | 3 | Yes (2) |
| 93247 | 4 | Yes (2) |
| 93257 | 8 | Yes (2) |
| 93274 | 5 | Yes (2) |
| 93277 | 5 | Yes (2) |
| 93291 | 5 | Yes (2) |
| 93292 | 5 | Yes (2) |
| 93301 | 8 | Yes (2) |
| 93304 | 7 | Yes (2) |
| 93305 | 7 | Yes (2) |
| 93306 | 7 | Yes (2) |
| 93307 | 7 | Yes (2) |
| 93308 | 8 | Yes (2) |
| 93309 | 8 | Yes (2) |
| 93311 | 8 | Yes (2) |
| 93312 | 5 | Yes (1) |
| 93313 | 8 | Yes (2) |
| 93314 | 8 | Yes (2) |
| 93401 | 1 | No |
| 93402 | 8 | Yes (2) |
| 93405 | 1 | No |
| 93420 | 6 | Yes (2) |
| 93422 | 6 | Yes (2) |
| 93423 | 3 | Yes (2) |
| 93427 | 1 | No |
| 93434 | 1 | No |
| 93436 | 1 | No |
| 93437 | 1 | No |
| 93441 | 1 | No |
| 93444 | 1 | No |
| 93446 | 7 | Yes (1) |
| 93448 | 1 | No |
| 93449 | 1 | No |
| 93454 | 1 | No |
| 93455 | 1 | No |
| 93458 | 1 | No |
| 93460 | 1 | No |
| 93463 | 2 | No |
| 93465 | 3 | No |
| 93501 | 1 | No |
| 93505 | 1 | No |
| 93523 | 1 | No |
| 93524 | 1 | No |
| 93534 | 1 | No |
| 93535 | 1 | No |
| 93536 | 1 | No |
| 93539 | 1 | No |
| 93546 | 1 | No |
| 93550 | 6 | Yes (1) |
| 93551 | 3 | No |
| 93552 | 2 | No |
| 93555 | 1 | No |
| 93556 | 1 | No |
| 93560 | 1 | No |
| 93561 | 7 | Yes (2) |
| 93584 | 1 | No |
| 93586 | 1 | No |
| 93604 | 2 | No |
| 93610 | 1 | Yes (1) |
| 93611 | 9 | Yes (2) |
| 93612 | 9 | Yes (2) |
| 93614 | 4 | Yes (1) |
| 93619 | 9 | Yes (2) |
| 93622 | 1 | No |
| 93625 | 1 | No |
| 93635 | 1 | No |
| 93644 | 1 | No |
| 93650 | 7 | Yes (2) |
| 93657 | 3 | Yes (2) |
| 93660 | 1 | No |
| 93701 | 8 | Yes (3) |
| 93702 | 8 | Yes (3) |
| 93703 | 8 | Yes (3) |
| 93704 | 8 | Yes (3) |
| 93705 | 8 | Yes (3) |
| 93706 | 8 | Yes (3) |
| 93710 | 8 | Yes (3) |
| 93711 | 8 | Yes (3) |
| 93720 | 8 | Yes (3) |
| 93721 | 8 | Yes (3) |
| 93722 | 8 | Yes (3) |
| 93723 | 8 | Yes (3) |
| 93725 | 8 | Yes (3) |
| 93726 | 8 | Yes (3) |
| 93727 | 9 | Yes (3) |
| 93728 | 8 | Yes (3) |
| 93730 | 8 | Yes (3) |
| 93740 | 5 | Yes (1) |
| 93901 | 1 | No |
| 93905 | 1 | No |
| 93906 | 1 | No |
| 93907 | 1 | No |
| 93908 | 1 | No |
| 93921 | 8 | Yes (2) |
| 93923 | 8 | Yes (2) |
| 93924 | 8 | Yes (2) |
| 93926 | 1 | No |
| 93927 | 1 | No |
| 93930 | 1 | No |
| 93933 | 1 | No |
| 93940 | 8 | Yes (2) |
| 93943 | 8 | Yes (2) |
| 93944 | 8 | Yes (2) |
| 93950 | 8 | Yes (2) |
| 93953 | 8 | Yes (2) |
| 93955 | 8 | Yes (2) |
| 93960 | 1 | No |
| 94005 | 6 | Yes (2) |
| 94014 | 1 | No |
| 94015 | 1 | No |
| 94022 | 1 | No |
| 94024 | 1 | No |
| 94035 | 1 | No |
| 94039 | 1 | No |
| 94040 | 2 | No |
| 94041 | 2 | No |
| 94042 | 1 | No |
| 94043 | 1 | No |
| 94066 | 1 | No |
| 94080 | 1 | No |
| 94086 | 1 | No |
| 94087 | 1 | No |
| 94129 | 6 | Yes (1) |
| 94306 | 1 | No |
| 94501 | 1 | No |
| 94502 | 1 | No |
| 94505 | 1 | No |
| 94506 | 1 | No |
| 94507 | 1 | No |
| 94510 | 2 | No |
| 94513 | 1 | No |
| 94515 | 3 | Yes (2) |
| 94523 | 1 | No |
| 94525 | 1 | No |
| 94526 | 1 | No |
| 94528 | 1 | No |
| 94530 | 1 | No |
| 94535 | 1 | No |
| 94541 | 1 | No |
| 94542 | 1 | No |
| 94544 | 1 | No |
| 94545 | 1 | No |
| 94546 | 1 | No |
| 94547 | 1 | No |
| 94549 | 1 | No |
| 94550 | 6 | Yes (2) |
| 94551 | 6 | Yes (2) |
| 94552 | 1 | No |
| 94553 | 1 | No |
| 94556 | 1 | No |
| 94561 | 1 | No |
| 94563 | 1 | No |
| 94564 | 1 | No |
| 94565 | 1 | No |
| 94566 | 7 | Yes (3) |
| 94568 | 1 | No |
| 94569 | 1 | No |
| 94571 | 1 | No |
| 94572 | 1 | No |
| 94574 | 1 | No |
| 94577 | 1 | No |
| 94578 | 1 | No |
| 94579 | 1 | No |
| 94580 | 1 | No |
| 94582 | 1 | No |
| 94583 | 1 | No |
| 94588 | 7 | Yes (3) |
| 94595 | 1 | No |
| 94596 | 1 | No |
| 94597 | 1 | No |
| 94598 | 1 | No |
| 94601 | 1 | No |
| 94602 | 1 | No |
| 94603 | 1 | No |
| 94605 | 1 | No |
| 94606 | 1 | No |
| 94607 | 1 | No |
| 94608 | 1 | No |
| 94609 | 1 | No |
| 94610 | 1 | No |
| 94611 | 1 | No |
| 94612 | 1 | No |
| 94613 | 1 | No |
| 94618 | 1 | No |
| 94619 | 1 | No |
| 94621 | 1 | No |
| 94702 | 1 | No |
| 94703 | 1 | No |
| 94704 | 1 | No |
| 94705 | 1 | No |
| 94706 | 1 | No |
| 94707 | 1 | No |
| 94708 | 1 | No |
| 94709 | 1 | No |
| 94710 | 1 | No |
| 94720 | 1 | No |
| 94801 | 1 | No |
| 94803 | 1 | No |
| 94804 | 1 | No |
| 94805 | 1 | No |
| 94806 | 1 | No |
| 94924 | 1 | No |
| 94928 | 4 | Yes (1) |
| 94931 | 1 | No |
| 95003 | 1 | No |
| 95005 | 2 | No |
| 95006 | 2 | No |
| 95007 | 2 | No |
| 95008 | 3 | Yes (1) |
| 95010 | 1 | No |
| 95012 | 1 | No |
| 95014 | 3 | Yes (1) |
| 95018 | 2 | No |
| 95019 | 6 | Yes (2) |
| 95020 | 7 | Yes (2) |
| 95023 | 2 | Yes (1) |
| 95030 | 3 | Yes (1) |
| 95032 | 3 | Yes (1) |
| 95033 | 3 | Yes (1) |
| 95037 | 4 | Yes (1) |
| 95039 | 1 | No |
| 95043 | 1 | No |
| 95050 | 3 | Yes (1) |
| 95051 | 2 | No |
| 95052 | 1 | No |
| 95054 | 1 | No |
| 95055 | 1 | No |
| 95056 | 1 | No |
| 95060 | 1 | No |
| 95062 | 1 | No |
| 95064 | 1 | No |
| 95066 | 3 | No |
| 95070 | 3 | Yes (1) |
| 95073 | 1 | No |
| 95076 | 6 | Yes (2) |
| 95077 | 6 | Yes (2) |
| 95110 | 3 | Yes (1) |
| 95111 | 4 | Yes (1) |
| 95112 | 3 | Yes (1) |
| 95113 | 3 | Yes (1) |
| 95116 | 3 | Yes (1) |
| 95117 | 3 | Yes (1) |
| 95118 | 3 | Yes (1) |
| 95119 | 4 | Yes (1) |
| 95120 | 4 | Yes (1) |
| 95121 | 3 | Yes (1) |
| 95122 | 3 | Yes (1) |
| 95123 | 4 | Yes (1) |
| 95124 | 3 | Yes (1) |
| 95125 | 3 | Yes (1) |
| 95126 | 3 | Yes (1) |
| 95127 | 3 | Yes (1) |
| 95128 | 3 | Yes (1) |
| 95129 | 3 | Yes (1) |
| 95130 | 3 | Yes (1) |
| 95131 | 3 | Yes (1) |
| 95132 | 3 | Yes (1) |
| 95133 | 3 | Yes (1) |
| 95134 | 1 | No |
| 95135 | 1 | No |
| 95136 | 4 | Yes (1) |
| 95138 | 4 | Yes (1) |
| 95139 | 4 | Yes (1) |
| 95148 | 3 | Yes (1) |
| 95202 | 1 | Yes (1) |
| 95203 | 1 | Yes (1) |
| 95204 | 1 | Yes (1) |
| 95205 | 1 | Yes (1) |
| 95206 | 1 | Yes (1) |
| 95207 | 1 | Yes (1) |
| 95209 | 1 | Yes (1) |
| 95210 | 1 | Yes (1) |
| 95211 | 1 | Yes (1) |
| 95212 | 1 | Yes (1) |
| 95215 | 1 | Yes (1) |
| 95219 | 1 | Yes (1) |
| 95222 | 1 | No |
| 95223 | 1 | No |
| 95231 | 1 | Yes (1) |
| 95240 | 6 | Yes (2) |
| 95242 | 6 | Yes (2) |
| 95247 | 1 | No |
| 95251 | 1 | No |
| 95258 | 5 | Yes (2) |
| 95301 | 8 | Yes (3) |
| 95304 | 1 | No |
| 95305 | 2 | Yes (1) |
| 95307 | 7 | Yes (2) |
| 95322 | 1 | No |
| 95327 | 1 | No |
| 95330 | 3 | Yes (1) |
| 95336 | 3 | Yes (2) |
| 95337 | 3 | Yes (2) |
| 95338 | 1 | No |
| 95340 | 3 | Yes (3) |
| 95341 | 3 | Yes (3) |
| 95348 | 3 | Yes (3) |
| 95350 | 7 | Yes (2) |
| 95351 | 7 | Yes (2) |
| 95354 | 7 | Yes (2) |
| 95355 | 7 | Yes (2) |
| 95356 | 7 | Yes (2) |
| 95357 | 7 | Yes (2) |
| 95358 | 7 | Yes (2) |
| 95360 | 1 | No |
| 95363 | 1 | No |
| 95365 | 3 | Yes (1) |
| 95366 | 4 | Yes (2) |
| 95368 | 1 | No |
| 95370 | 3 | No |
| 95376 | 1 | No |
| 95401 | 1 | No |
| 95403 | 1 | No |
| 95404 | 1 | No |
| 95405 | 1 | No |
| 95407 | 1 | No |
| 95409 | 1 | No |
| 95422 | 3 | No |
| 95433 | 6 | Yes (2) |
| 95441 | 1 | No |
| 95442 | 6 | Yes (2) |
| 95448 | 3 | No |
| 95451 | 1 | No |
| 95453 | 1 | No |
| 95458 | 1 | No |
| 95464 | 1 | No |
| 95467 | 1 | No |
| 95472 | 1 | No |
| 95476 | 6 | Yes (2) |
| 95482 | 8 | Yes (2) |
| 95497 | 1 | No |
| 95501 | 1 | No |
| 95503 | 1 | No |
| 95537 | 1 | No |
| 95608 | 8 | Yes (3) |
| 95610 | 2 | No |
| 95613 | 1 | No |
| 95616 | 1 | No |
| 95618 | 1 | No |
| 95619 | 1 | No |
| 95620 | 1 | No |
| 95621 | 5 | No |
| 95623 | 1 | No |
| 95624 | 6 | Yes (2) |
| 95626 | 2 | No |
| 95628 | 5 | No |
| 95646 | 1 | No |
| 95648 | 2 | Yes (1) |
| 95651 | 1 | No |
| 95652 | 8 | Yes (3) |
| 95655 | 6 | Yes (3) |
| 95660 | 8 | Yes (3) |
| 95661 | 1 | No |
| 95662 | 1 | No |
| 95667 | 1 | No |
| 95670 | 6 | Yes (3) |
| 95671 | 1 | Yes (1) |
| 95672 | 1 | No |
| 95673 | 8 | Yes (3) |
| 95678 | 1 | No |
| 95682 | 1 | No |
| 95684 | 1 | No |
| 95687 | 5 | Yes (2) |
| 95688 | 5 | Yes (2) |
| 95692 | 2 | Yes (1) |
| 95694 | 2 | No |
| 95695 | 1 | No |
| 95709 | 1 | No |
| 95726 | 1 | No |
| 95735 | 2 | Yes (1) |
| 95746 | 1 | No |
| 95747 | 1 | No |
| 95757 | 6 | Yes (2) |
| 95758 | 8 | Yes (3) |
| 95762 | 1 | No |
| 95776 | 1 | No |
| 95811 | 8 | Yes (3) |
| 95814 | 8 | Yes (3) |
| 95815 | 8 | Yes (3) |
| 95816 | 8 | Yes (3) |
| 95817 | 8 | Yes (3) |
| 95818 | 8 | Yes (3) |
| 95819 | 8 | Yes (3) |
| 95820 | 8 | Yes (3) |
| 95821 | 8 | Yes (3) |
| 95822 | 8 | Yes (3) |
| 95823 | 8 | Yes (3) |
| 95824 | 8 | Yes (3) |
| 95825 | 8 | Yes (3) |
| 95826 | 8 | Yes (3) |
| 95827 | 6 | Yes (3) |
| 95828 | 8 | Yes (3) |
| 95829 | 8 | Yes (3) |
| 95830 | 6 | Yes (2) |
| 95831 | 8 | Yes (3) |
| 95832 | 8 | Yes (3) |
| 95833 | 8 | Yes (3) |
| 95834 | 8 | Yes (3) |
| 95835 | 8 | Yes (3) |
| 95838 | 8 | Yes (3) |
| 95841 | 8 | Yes (3) |
| 95842 | 5 | No |
| 95843 | 5 | No |
| 95864 | 8 | Yes (3) |
| 95926 | 6 | Yes (3) |
| 95928 | 6 | Yes (3) |
| 95932 | 1 | No |
| 95948 | 5 | Yes (2) |
| 95951 | 6 | Yes (3) |
| 95953 | 1 | No |
| 95963 | 6 | Yes (3) |
| 95965 | 3 | Yes (1) |
| 95966 | 2 | No |
| 95971 | 1 | No |
| 95973 | 6 | Yes (3) |
| 95987 | 1 | No |
| 95988 | 1 | No |
| 96001 | 7 | Yes (2) |
| 96002 | 7 | Yes (2) |
| 96003 | 7 | Yes (2) |
| 96008 | 1 | No |
| 96019 | 1 | No |
| 96021 | 1 | No |
| 96024 | 2 | Yes (1) |
| 96062 | 1 | No |
| 96073 | 1 | No |
| 96080 | 3 | Yes (1) |
| 96087 | 7 | Yes (2) |
| 96093 | 2 | Yes (1) |
| 96130 | 1 | No |
| 96145 | 1 | No |
| 96150 | 8 | Yes (2) |
| 96158 | 8 | Yes (2) |
| 96161 | 3 | Yes (1) |
Results are based on EPA UCMR 5 monitoring data (2023–2025), linked to ZIP codes via Public Water System Identifier. Non-detections are not present in this analytic dataset. For each compound and ZIP code, the highest observed concentration across the monitoring period is retained; this characterizes the upper bound of observed drinking-water concentrations, not a long-term average or an individual exposure estimate. A single water system may serve multiple ZIP codes, so the same monitoring record can appear for more than one ZIP in this table. ZIP-code assignment reflects water-system service area geography and does not establish individual household exposure. Private wells are not represented unless served by a monitored public water system. PFOA and PFOS are reported by detection prevalence because the UCMR 5 reporting limit equals their federal MCL. A full PFBS Hazard Index is not calculated because co-located, same-event multi-compound readings are not retained in this dataset. Lithium has no federal Maximum Contaminant Level; 7.36 µg/L is an evidence-based reference concentration from a prospective cohort study, not a regulatory threshold.
PFAS Estimator homepage & national ZIP lookup
Full national methodology, limitations, and dataset documentation
All states & territories index