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 |
|---|---|---|---|---|
| Nitrate | 5100 µg/L 51% of the EPA limit 10000 µg/L
worst single sample: 5200 µg/L | 82/82 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 35/35 | LCR | 2024 |
| Bromoform | 22.175 µg/L No EPA limit set
worst single sample: 27.8 µg/L | 16/16 | SYR4 | 2014–2019 |
| Dibromochloromethane | 17.4 µg/L No EPA limit set
worst single sample: 25.2 µg/L | 16/16 | SYR4 | 2014–2019 |
| TTHM | 50.625 µg/L 63% of the EPA limit 80 µg/L
worst single sample: 69 µg/L | 16/16 | SYR4 | 2014–2019 |
| Bromodichloromethane | 9.7 µg/L No EPA limit set
worst single sample: 11.8 µg/L | 15/16 | SYR4 | 2014–2019 |
| Fluoride | 281 µg/L 7% of the EPA limit 4000 µg/L
worst single sample: 330 µg/L | 15/15 | SYR4 | 2012–2019 |
| Arsenic | 3.905 µg/L 39% of the EPA limit 10 µg/L
worst single sample: 4.1 µg/L | 14/15 | SYR4 | 2012–2019 |
| Chloroform | 3.975 µg/L No EPA limit set
worst single sample: 4.2 µg/L | 10/16 | SYR4 | 2014–2019 |
| Dibromoacetic Acid | 4.685 µg/L No EPA limit set
worst single sample: 5 µg/L | 10/16 | SYR4 | 2014–2019 |
| Total Haloacetic Acids (HAA5) | 4.685 µg/L 7.8% of the EPA limit 60 µg/L
worst single sample: 5 µg/L | 10/16 | SYR4 | 2014–2019 |
| Combined Uranium | 4.7978 µg/L 16% of the EPA limit 30 µg/L
worst single sample: 5.066 µg/L | 7/7 | SYR4 | 2013–2016 |
| Lithium | 48.5 µg/L No EPA limit set | 4/6 | UCMR-5 | 2025 |
| Trichloroacetic Acid | 1.7 µg/L No EPA limit set | 1/16 | SYR4 | 2014–2019 |
89 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about La Habra Heights Cwd
Is La Habra Heights Cwd tap water safe to drink?
EPA monitoring detected 21 contaminants in La Habra Heights Cwd'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 La Habra Heights Cwd's water?
EPA monitoring detected Nitrate, Lead, Bromoform, Dibromochloromethane, TTHM, and others. The full list with the level and data source for each is above.
How many people does La Habra Heights Cwd serve?
La Habra Heights Cwd reports serving 5,325 people in California, per its EPA record.
Has La Habra Heights Cwd had any water quality violations?
The EPA has no formal drinking-water violations on file for La Habra Heights Cwd.
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.