A91/100
Mount Hermon Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,176 residents · California
What's In Mount Hermon's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
3
Violations (last 5yr)
2
Unresolved
1
Health-Related
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 2Unresolved
Treatment technique violation
TIER 3Resolved
Other violation
When: November 14, 2021 – June 1, 2022Rule: Consumer Confidence RuleEnforcement: Formal — state order issued
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
MT. HERMON ASSOCIATION, INC.
Population Served
1,176
Water Source
Groundwater
System ID
CA4410008
Frequently Asked Questions About Mount Hermon Water
Is Mount Hermon tap water safe to drink?
Mount Hermon, California tap water receives a grade of A (91/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Mount Hermon's water?
1 contaminants were tested in Mount Hermon's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Mount Hermon have any water quality violations?
Yes, Mount Hermon has 5 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, Other. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Mount Hermon?
Mount Hermon water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does Mount Hermon's tap water come from?
Mount Hermon's drinking water is sourced from groundwater and supplied by MT. HERMON ASSOCIATION, INC.. The system serves approximately 1,176 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Mount Hermon's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Mount Hermon's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Mount Hermon's water compare to other cities in California?
Mount Hermon's water quality score of 91/100 earns a grade of A, which is considered excellent. This places Mount Hermon among the better-performing water systems in California. Visit our California state page to see how all cities in the state compare.
What should I do if I'm concerned about Mount Hermon's water quality?
If you have concerns about Mount Hermon's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (MT. HERMON ASSOCIATION, INC.) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.