Water Quality Report · Updated May 12, 2026
SANTA CLARITA VALLEY WATER AGENCY
SANTA CLARITA VALLEY WATER AGENCY delivers tap water graded F (47/100) by TapWaterSafety.org. The utility serves approximately 294,090 residents in NEWHALL, California using surface water. 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. For questions, the utility can be reached at 661-388-4934.
Is NEWHALL tap water safe to drink?
SANTA CLARITA VALLEY WATER AGENCY delivers tap water that earns a grade of F (47/100) from TapWaterSafety.org — a poor rating, with significant contamination concerns and/or recent violations.
The utility serves 294,090 residents in NEWHALL, drawing from surface water.
Public testing data identifies 19 contaminants in this water above EWG's health-based guidelines, including: Perfluorooctanoic acid (PFOA), Perfluorooctane sulfonate (PFOS), Perfluorohexane sulfonate (PFHXS), Haloacetic acids (HAA9), Haloacetic acids (HAA5), Dibromoacetic acid, Total trihalomethanes (TTHMs), Arsenic*, Dibromochloromethane, Perfluorononanoic acid (PFNA), Bromodichloromethane, Chromium (hexavalent), Nitrate, Nitrate and nitrite, Bromoform, Uranium, Dichloroacetic acid, Chloroform, Trichloroacetic acid. 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 NEWHALL residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for SANTA CLARITA VALLEY WATER AGENCY.
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.
Contact SANTA CLARITA VALLEY WATER AGENCY
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 NEWHALL
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 47/100 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 |
|---|---|---|---|---|---|---|---|---|
| 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
SANTA CLARITA VALLEY WATER AGENCY service area
This water system serves 1 community in Los Angeles County, California. Click any city for its dedicated tap water quality page.
Find the right filter for NEWHALL water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.