Compliance record
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
Other contaminants detected
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of this
system's samples — over 100% is worth reading, but is not by itself a
violation. Where a single sample came in higher than that percentile, it
is noted under the bar. Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 19 µg/L 24% of the EPA limit 80 µg/L
worst single sample: 27 µg/L | 279/287 | SYR4 | 2012–2019 |
| Dibromochloromethane | 7.86 µg/L No EPA limit set
worst single sample: 12 µg/L | 269/287 | SYR4 | 2012–2019 |
| Bromoform | 6.85 µg/L No EPA limit set
worst single sample: 10 µg/L | 251/270 | SYR4 | 2012–2019 |
| Bromodichloromethane | 3.6 µg/L No EPA limit set
worst single sample: 5.2 µg/L | 213/251 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 3.1 µg/L No EPA limit set
worst single sample: 4.1 µg/L | 210/248 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 3.155 µg/L 5.3% of the EPA limit 60 µg/L
worst single sample: 5.7 µg/L | 210/248 | SYR4 | 2012–2019 |
| Nitrate | 4746 µg/L 47% of the EPA limit 10000 µg/L
worst single sample: 5000 µg/L | 92/92 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 41/41 | LCR | 2025 |
| Chloroform | 1.5 µg/L No EPA limit set
worst single sample: 2.3 µg/L | 26/248 | SYR4 | 2012–2019 |
| Fluoride | 310.5 µg/L 7.8% of the EPA limit 4000 µg/L
worst single sample: 320 µg/L | 20/20 | SYR4 | 2012–2018 |
| Tetrachloroethylene | 1.11 µg/L 22% of the EPA limit 5 µg/L
worst single sample: 1.2 µg/L | 19/128 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 1.31 µg/L 1.9% of the EPA limit 70 µg/L
worst single sample: 1.4 µg/L | 10/117 | SYR4 | 2012–2019 |
| Combined Uranium | 3.2482 µg/L 11% of the EPA limit 30 µg/L
worst single sample: 3.427 µg/L | 7/7 | SYR4 | 2012–2019 |
| Trichloroethylene | 0.7060 µg/L 14% of the EPA limit 5 µg/L
worst single sample: 0.7100 µg/L | 3/110 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) Phthalate | 3.76 µg/L 63% of the EPA limit 6 µg/L
worst single sample: 3.8 µg/L | 2/27 | SYR4 | 2013–2019 |
| Arsenic | 2.3 µg/L 23% of the EPA limit 10 µg/L | 1/11 | SYR4 | 2012–2018 |
| Barium | 110 µg/L 5.5% of the EPA limit 2000 µg/L | 1/11 | SYR4 | 2012–2018 |
| Monobromoacetic Acid | 1.5 µg/L No EPA limit set | 1/248 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 3.7 µg/L No EPA limit set | 1/248 | SYR4 | 2012–2019 |
59 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDi(2-ethylhexyl) AdipateDichloroacetic AcidEthylbenzeneHfpo-DaLassoLeadMercuryNetfosaaNfdhaNmefosaaNitritePfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaSeleniumSimazineStyreneThallium, TotalTolueneTrichloroacetic AcidVinyl ChlorideXylenes, TotalLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Suburban Water Systems-Whittier
Is Suburban Water Systems-Whittier tap water safe to drink?
EPA monitoring detected 25 contaminants in Suburban Water Systems-Whittier's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Suburban Water Systems-Whittier's water?
EPA monitoring detected TTHM, Dibromochloromethane, Bromoform, Bromodichloromethane, Dibromoacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Suburban Water Systems-Whittier serve?
Suburban Water Systems-Whittier reports serving 66,045 people in California, per its EPA record.
Has Suburban Water Systems-Whittier had any water quality violations?
The EPA has no formal drinking-water violations on file for Suburban Water Systems-Whittier.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.