Is Susanville, CA tap water safe?
The short answer
None of the 6 utilities serving Susanville has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.
City of Susanville, which serves the most people here, has 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 23.9 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.
The water from City of Susanville is moderately hard, typically 84 mg/L (4.9 grains per gallon). How California’s water compares.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Susanville’s ZIP codes, from EPA’s estimates.
- Open report
City of Susanville
California · serves 7,811 people · about 150 in Susanville
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 23.9 ppb, above EPA’s health benchmark. Hardness: moderately hard, typically 84 mg/L (4.9 grains per gallon).
No health-based violations since 2016
- Open report
Cdcr - High Desert State Prison
California · serves 3,857 people · about 120 in Susanville
2 results above the health goal. The worst: Arsenic at 9.4 ppb, above the health goal. Hardness: soft to hard depending on the source, 22 to 170 mg/L (1.3 to 9.9 grains per gallon).
No health-based violations since 2016
- Open report
Leavitt Lake CSD
California · serves 950 people · under 100 in Susanville
Nothing in its records is above a health goal. Hardness: hard, 150 mg/L (8.8 grains per gallon).
No health-based violations since 2016
- Open report
Lake Forest Mutual W.C.
California · serves 565 people · under 100 in Susanville
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Susan Hills Estates WC
California · serves 252 people · under 100 in Susanville
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Spaulding Eagle Lake MWC
California · serves 36 people · under 100 in Susanville
Nothing in its records is above a health goal. Hardness: moderately hard, typically 86 mg/L (5 grains per gallon).
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in City of Susanville’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic
Water testing near Susanville
No lab California certifies is within 75 miles of Susanville on the state’s list. Some take samples by mail; the state’s page lists them all.
All 145 certified labs for CaliforniaZIP codes in Susanville
Which ZIP codes are in Susanville: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology.
Near Susanville
Other towns in Lassen County with a page of their own.
What to do next
- Read City of Susanville’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About LithiumWhat it does to health, where it comes from, and the certification claim that addresses it.About Lithium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water