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 | 7297 µg/L 73% of the EPA limit 10000 µg/L
worst single sample: 7537.1 µg/L | 274/318 | SYR4 | 2012–2019 |
| TTHM | 54 µg/L 68% of the EPA limit 80 µg/L
worst single sample: 82 µg/L | 124/125 | SYR4 | 2012–2019 |
| Bromoform | 7.2 µg/L No EPA limit set
worst single sample: 8.1 µg/L | 117/125 | SYR4 | 2012–2019 |
| Dibromochloromethane | 18.25 µg/L No EPA limit set
worst single sample: 29 µg/L | 116/125 | SYR4 | 2012–2019 |
| Chloroform | 14 µg/L No EPA limit set
worst single sample: 21 µg/L | 114/125 | SYR4 | 2012–2019 |
| Bromodichloromethane | 17 µg/L No EPA limit set
worst single sample: 23 µg/L | 107/125 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 22.9 µg/L 38% of the EPA limit 60 µg/L
worst single sample: 37 µg/L | 102/124 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 5.32 µg/L No EPA limit set
worst single sample: 7 µg/L | 97/124 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 9.44 µg/L No EPA limit set
worst single sample: 14 µg/L | 97/124 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 7.02 µg/L No EPA limit set
worst single sample: 8.9 µg/L | 75/124 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 7364 µg/L 74% of the EPA limit 10000 µg/L
worst single sample: 810000 µg/L | 53/59 | SYR4 | 2012–2019 |
| Fluoride | 610.5 µg/L 15% of the EPA limit 4000 µg/L
worst single sample: 770 µg/L | 32/32 | SYR4 | 2012–2019 |
| Lead | 0.0025 mg/L 17% of the EPA limit 0.0150 mg/L | 32/32 | LCR | 2025 |
| Combined Uranium | 9.00556 µg/L 30% of the EPA limit 30 µg/L
worst single sample: 10.2959 µg/L | 29/42 | SYR4 | 2012–2017 |
| Monobromoacetic Acid | 3.58 µg/L No EPA limit set
worst single sample: 14 µg/L | 29/124 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 5.925 µg/L No EPA limit set
worst single sample: 9.1 µg/L | 26/124 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 2.19 pCi/L No EPA limit set
worst single sample: 2.25 pCi/L | 6/6 | SYR4 | 2012–2014 |
| Lithium | 35.257 µg/L No EPA limit set | 6/10 | UCMR-5 | 2025 |
| Combined Radium (-226 And -228) | 0.5002 pCi/L 10% of the EPA limit 5 pCi/L
worst single sample: 0.5190 pCi/L | 5/5 | SYR4 | 2012–2013 |
| Selenium | 7.57 µg/L 15% of the EPA limit 50 µg/L
worst single sample: 7.7 µg/L | 3/33 | SYR4 | 2012–2019 |
85 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, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Golden State Wc - Placentia/Yorba Linda
Is Golden State Wc - Placentia/Yorba Linda tap water safe to drink?
EPA monitoring detected 27 contaminants in Golden State Wc - Placentia/Yorba Linda'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 Golden State Wc - Placentia/Yorba Linda's water?
EPA monitoring detected Nitrate, TTHM, Bromoform, Dibromochloromethane, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Golden State Wc - Placentia/Yorba Linda serve?
Golden State Wc - Placentia/Yorba Linda reports serving 50,381 people in California, per its EPA record.
Has Golden State Wc - Placentia/Yorba Linda had any water quality violations?
The EPA has no formal drinking-water violations on file for Golden State Wc - Placentia/Yorba Linda.
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.