Water Quality Report · Updated October 07, 2026
REDLANDS CITY MUD-WATER DIV
REDLANDS CITY MUD-WATER DIV delivers tap water graded D (60/100) by TapWaterSafety.org. The utility serves approximately 78,025 residents in REDLANDS, California using surface water. The most significant water quality concerns are: PFAS contamination; Perfluorohexane sulfonate (PFHXS) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline. For questions, the utility can be reached at 909-798-7658.
Is REDLANDS tap water safe to drink?
REDLANDS CITY MUD-WATER DIV delivers tap water that earns a grade of D (60/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including pfas contamination.
The utility serves 78,025 residents in REDLANDS, drawing from surface water.
Public testing data identifies 15 contaminants in this water above EWG's health-based guidelines, including: Perfluorohexane sulfonate (PFHXS), Haloacetic acids (HAA5), Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Trichloroacetic acid, Chromium (hexavalent), Bromodichloromethane, Chloroform, Dichloroacetic acid, Nitrate, Dibromochloromethane, Uranium, Perfluorooctanoic acid (PFOA), Perfluorooctane sulfonate (PFOS), Perchlorate. 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.
EPA compliance record
Official U.S. EPA records for REDLANDS CITY MUD-WATER DIV (system ID CA3610037) 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.
Quick actions for REDLANDS residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for REDLANDS CITY MUD-WATER DIV.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS), Perfluorooctanoic acid (PFOA) 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 0.428 ppt, 428x above the EWG health guideline of 0.001 ppt.
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.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 15.2 ppb, 253x above the EWG health guideline of 0.06 ppb.
Contact REDLANDS CITY MUD-WATER DIV
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 REDLANDS
Filters matched to the specific contaminants in this 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.
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 60/100 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 |
|---|---|---|---|---|---|---|---|---|
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.428 ppt | 0.001 | 10.0 | — | — | — | — | 428× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
15.2 ppb | 0.06 | — | — | — | — | — | 253× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
13.9 ppb | 0.15 | 80.0 | 100 | — | — | — | 93× over |
| Trichloroacetic acid Disinfection byproduct |
5.21 ppb | 0.1 | — | — | — | — | — | 52× over |
| Chromium (hexavalent) Heavy metal |
0.951 ppb | 0.02 | — | — | — | — | — | 48× over |
| Bromodichloromethane Disinfection byproduct |
2.7 ppb | 0.06 | — | — | — | — | — | 45× over |
| Chloroform Disinfection byproduct |
9.69 ppb | 0.4 | — | — | — | — | — | 24× over |
| Dichloroacetic acid Disinfection byproduct |
4.31 ppb | 0.2 | — | — | — | — | — | 22× over |
| Nitrate Inorganic |
2.59 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 18× over |
| Dibromochloromethane Disinfection byproduct |
1.07 ppb | 0.1 | — | — | — | — | — | 11× over |
| Uranium Radiological |
4.66 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 11× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.486 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 5.4× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.651 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 2.2× over |
| Perchlorate Disinfection byproduct |
1.29 ppb | 1.0 | — | — | — | — | — | 1.3× over |
| Bromoform Disinfection byproduct |
0.286 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Dibromoacetic acid Disinfection byproduct |
0.0115 ppb | 0.03 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
78.8 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
3.36 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
4.88 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
1.76 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
0.462 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
0.19 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.224 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
0.254 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.115 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
0.553 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.621 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
1.39 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.
REDLANDS CITY MUD-WATER DIV service area
This water system serves 1 community in San Bernardino County, California. Click any city for its dedicated tap water quality page.
Find the right filter for REDLANDS water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.