Tap Water Quality Report
Tap water quality in NEWHALL, California
Tap water in NEWHALL, California receives a grade of F (47/100) from TapWaterSafety.org. It's served by SANTA CLARITA VALLEY WATER AGENCY. The most significant water quality concerns are: PFAS contamination; Perfluorohexane sulfonate (PFHXS) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in NEWHALL's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving NEWHALL.
PFAS contamination
Severe concernPerfluorononanoic acid (PFNA), Perfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 4.55 ppt, 4550x above the EWG health guideline of 0.001 ppt.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 24.5 ppb, 408x 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.
Arsenic detected
Moderate concernArsenic detected at 0.302 ppb.
Recommended filters for NEWHALL
Filters matched to the specific contaminants in NEWHALL's 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.
All contaminants detected in NEWHALL'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 |
|---|---|---|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) PFAS |
7.15 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | EPA violation |
| Perfluorooctane sulfonate (PFOS) PFAS |
6.45 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | EPA violation |
| Perfluorohexane sulfonate (PFHXS) PFAS |
4.55 ppt | 0.001 | 10.0 | — | — | — | — | 4550× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
24.5 ppb | 0.06 | — | — | — | — | — | 408× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Dibromoacetic acid Disinfection byproduct |
3.31 ppb | 0.03 | — | — | — | — | — | 110× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
16.1 ppb | 0.15 | 80.0 | 100 | — | — | — | 108× over |
| Arsenic* Heavy metal |
0.302 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 75× over |
| Dibromochloromethane Disinfection byproduct |
5.49 ppb | 0.1 | — | — | — | — | — | 55× over |
| Perfluorononanoic acid (PFNA) PFAS |
0.241 ppt | 0.006 | 10.0 | — | — | — | — | 40× over |
| Bromodichloromethane Disinfection byproduct |
2.33 ppb | 0.06 | — | — | — | — | — | 39× over |
| Chromium (hexavalent) Heavy metal |
0.603 ppb | 0.02 | — | — | — | — | — | 30× over |
| Nitrate Inorganic |
3.34 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 24× over |
| Nitrate and nitrite Inorganic |
2.36 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 17× over |
| Bromoform Disinfection byproduct |
6.02 ppb | 0.5 | — | — | — | — | — | 12× over |
| Uranium Radiological |
3.13 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 7.3× over |
| Dichloroacetic acid Disinfection byproduct |
0.801 ppb | 0.2 | — | — | — | — | — | 4.0× over |
| Chloroform Disinfection byproduct |
0.737 ppb | 0.4 | — | — | — | — | — | 1.8× over |
| Trichloroacetic acid Disinfection byproduct |
0.128 ppb | 0.1 | — | — | — | — | — | 1.3× over |
| Chlorate Disinfection byproduct |
124.8 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Tetrachloroethylene (perchloroethylene)* Volatile organic compound |
0.0168 ppb | 0.06 | 5.0 | — | — | — | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.0897 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Vanadium Other |
2.53 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
3.95 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
25.1 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
3.36 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Trichloroethylene* Volatile organic compound |
0.00455 ppb | 0.4 | 5.0 | — | — | — | — | Below guideline |
| N-ethyl perfluorooctane sulfonamido acetic acid (N-EtFOSAA) PFAS |
0.011 ppt | 1.0 | — | — | — | — | — | Below guideline |
| Cobalt Other |
0.611 ppb | 70.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
6.36 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
6.58 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
2.72 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0582 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
0.778 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
0.708 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.961 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chloromethane* Other |
0.00117 ppb | 2.69 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid* Disinfection byproduct |
0.0213 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Chlorodifluoromethane Other |
0.151 ppb | — | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
0.0641 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.328 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.0175 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
21.8 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 SANTA CLARITA VALLEY WATER AGENCY.