Lake Sherwood Tap Water Quality Report
Lake Sherwood's water has 2 contaminants above EPA MCLGs. Consider using a certified water filter for additional protection.
Other systems listed for Lake Sherwood with results above guidelines: CALLEGUAS MUNICIPAL WATER DIST (2 above guidelines), CALIFORNIA WATER SERVICE CO - WESTLAKE (2 above guidelines)
Water system
VENTURA CWWD NO. 38 - LAKE SHERWOOD
2 other systems are listed for Lake Sherwood. See their figures
People Served
1,759
Health-based violations since 2020
0
VENTURA CWWD NO. 38 - LAKE SHERWOOD. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Sep 2023 · VENTURA CWWD NO. 38 - LAKE SHERWOOD
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Lake Sherwood Tap Water Safe to Drink?
We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems. Lake Sherwood's water has 2 contaminants above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
VENTURA CWWD NO. 38 - LAKE SHERWOOD, Lake Sherwood's water system, serves 1,759 people. 2 other systems are listed for Lake Sherwood. Each system's results are listed under its own name, never added to VENTURA CWWD NO. 38 - LAKE SHERWOOD's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for VENTURA CWWD NO. 38 - LAKE SHERWOOD is from Sep 2023.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in California
Lake Sherwood Water Service Areas
What these numbers actually mean for Lake Sherwood, CA
We read Lake Sherwood, CA’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 2 contaminants above EPA MCLGs and 1 contaminant with an EPA health goal detected in some samples (no level on file)
- 11 results on file
- No PFAS results on record
Buying a home here? Property Water Report — $49 Emailed within one business day.
Fluoride in Lake Sherwood's water
CALIFORNIA WATER SERVICE CO - WESTLAKE
PWSID CA5610016
CALIFORNIA WATER SERVICE CO - WESTLAKE reported 0.69 mg/L, below the 0.7 mg/L U.S. Public Health Service recommendation.
VENTURA CWWD NO. 38 - LAKE SHERWOOD
PWSID CA5610069
No fluoride level in our data for VENTURA CWWD NO. 38 - LAKE SHERWOOD. Your utility's annual water quality report (CCR) lists it.
CALLEGUAS MUNICIPAL WATER DIST
PWSID CA5610050
Fluoride was detected in 44.4% of CALLEGUAS MUNICIPAL WATER DIST's samples (median below the detection limit).
Get the Weekly Water Brief
One email a week on water testing, treatment, and what water-quality data means for your home.
Free forever. Unsubscribe anytime. We never share your email.
Recommended Water Filters for Lake Sherwood
Based on Lake Sherwood's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
Culligan
ZeroWater
NSF Certified:
Flow Rate
1.9 gpm
Daily Production
1 gpd
Highlights:
- Compact design
- Easy to set up
- Affordable
- NSF-42, NSF-53, NSF-401 certified
Removes 19 contaminants:
+14 more
Strontium, Molybdenum, Fluoride, Uranium, Lead, Total PFAS, Chlorine, 25, Phosphorus, Bicarbonate, Calcium, Carbonate, Magnesium, Sodium
Santevia
Bath Filter
NSF Certified:
Flow Rate
0.36 gpm
Highlights:
- Organic cotton design reduces plastic used in construction
- Affordable upfront & ongoing cost
- The only bath filter that removed 100% chlorine with “normal” faster faucet flow
Removes 1 contaminants:
Waterdrop
A1
NSF Certified:
Flow Rate
1 gpm
Highlights:
- Performance certified
- Lower price than Philips
- Hot water dispensing
- Compact design
Removes 5 contaminants:
Whirlpool Corporation
W11256135
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.7 gpm
Removes 19 contaminants:
+14 more
Benzene, Carbofuran, Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Chlorobenzene, Cryptosporidium, Ethylbenzene, Lead, Mercury, Metolachlor, Tetrachloroethylene, Toxaphene, Turbidity
Test Your Water Quality
Professional laboratory testing provides accurate, detailed analysis of your drinking water.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
On a private well near Lake Sherwood? Public-water results do not apply to private wells. See Ventura County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Frequently Asked Questions About Lake Sherwood Tap Water
Lake Sherwood's water has 2 contaminants above EPA MCLGs. While the water meets federal legal limits, we recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach VENTURA CWWD NO. 38 - LAKE SHERWOOD. For a problem with your water now (discolored water, no water, low pressure, a leak), contact VENTURA CWWD NO. 38 - LAKE SHERWOOD directly.
Check another location
Get the Weekly Water Brief
One email a week on water testing, treatment, and what water-quality data means for your home.
One email a week. Unsubscribe anytime.