Water Quality Report · Updated May 12, 2026
YORBA LINDA WATER DISTRICT
YORBA LINDA WATER DISTRICT delivers tap water graded F (52/100) by TapWaterSafety.org. The utility serves approximately 84,292 residents in PLACENTIA, California using surface water (purchased). 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. For questions, the utility can be reached at 714-701-3102.
Is PLACENTIA tap water safe to drink?
YORBA LINDA WATER DISTRICT delivers tap water that earns a grade of F (52/100) from TapWaterSafety.org — a poor rating, with significant contamination concerns and/or recent violations.
The utility serves 84,292 residents in PLACENTIA, drawing from surface water (purchased).
Public testing data identifies 19 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Perfluorohexane sulfonate (PFHXS), Dibromoacetic acid, Bromodichloromethane, Dibromochloromethane, Arsenic*, Trichloroacetic acid, Dichloroacetic acid, Uranium, Chloroform, Bromoform, Nitrate, Nitrate and nitrite, Perfluorooctanoic acid (PFOA), Chromium (hexavalent), Radium, combined (-226 and -228)*, Perfluorooctane sulfonate (PFOS). For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
Quick actions for PLACENTIA residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for YORBA LINDA WATER DISTRICT.
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.
Contact YORBA LINDA WATER DISTRICT
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for PLACENTIA
Filters matched to the specific contaminants in this water supply.
Reverse Osmosis or NSF P473 certified carbon
$80-$750Activated carbon and RO are the only technologies proven to remove PFAS at certified levels.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 52/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
YORBA LINDA WATER DISTRICT service area
This water system serves 1 community in Orange County, California. Click any city for its dedicated tap water quality page.
Find the right filter for PLACENTIA water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.