Tap Water Quality Report
Tap water quality in PLACENTIA, California
Tap water in PLACENTIA, California receives a grade of F (54/100) from TapWaterSafety.org. It's served by YORBA LINDA WATER DISTRICT. The most significant water quality concerns are: PFAS contamination; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in PLACENTIA's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving PLACENTIA.
PFAS contamination
Severe concernPerfluorooctanoic acid (PFOA), Perfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 26.0 ppb, 433x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 36.2 ppb, 362x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 31.4 ppb, 210x above the EWG health guideline of 0.15 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.16 ppb.
EPA compliance record
Official U.S. EPA records for YORBA LINDA WATER DISTRICT (system ID CA3010037) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for PLACENTIA
Filters matched to the specific contaminants in PLACENTIA's water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in PLACENTIA's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
26.0 ppb | 0.06 | — | — | — | — | — | 433× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
31.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 210× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.15 ppt | 0.001 | 10.0 | — | — | — | — | 150× over |
| Dibromoacetic acid Disinfection byproduct |
3.97 ppb | 0.03 | — | — | — | — | — | 132× over |
| Bromodichloromethane Disinfection byproduct |
7.22 ppb | 0.06 | — | — | — | — | — | 120× over |
| Dibromochloromethane Disinfection byproduct |
11.4 ppb | 0.1 | — | — | — | — | — | 114× over |
| Arsenic* Heavy metal |
0.16 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 40× over |
| Trichloroacetic acid Disinfection byproduct |
2.18 ppb | 0.1 | — | — | — | — | — | 22× over |
| Dichloroacetic acid Disinfection byproduct |
4.06 ppb | 0.2 | — | — | — | — | — | 20× over |
| Uranium Radiological |
7.1 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 17× over |
| Chloroform Disinfection byproduct |
6.01 ppb | 0.4 | — | — | — | — | — | 15× over |
| Bromoform Disinfection byproduct |
6.77 ppb | 0.5 | — | — | — | — | — | 14× over |
| Nitrate Inorganic |
1.23 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 8.8× over |
| Nitrate and nitrite Inorganic |
1.18 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 8.4× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.217 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 2.4× over |
| Chromium (hexavalent) Heavy metal |
0.0305 ppb | 0.02 | — | — | — | — | — | 1.5× over |
| Radium, combined (-226 and -228)* Radiological |
0.07 pCi/L | 0.05 | 5.0 | — | — | — | — | 1.4× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.391 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 1.3× over |
| Chlorate Disinfection byproduct |
120.6 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
4.04 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
7.18 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Aluminum* Heavy metal |
77.5 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Barium Heavy metal |
76.2 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.0224 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Manganese Heavy metal |
3.62 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
15.2 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
3.84 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.927 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0104 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.261 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Bromide Other |
180.5 ppb | — | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.474 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.103 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
19.7 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from YORBA LINDA WATER DISTRICT.