Salyer Mutual WC (Formerly Riverview Ac)
What EPA’s and California’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.
- Serves
- 231 people
- Connections
- 70
- Water source
- Surface water
- Based in
- Salyer, CA
- County
- Trinity
- Owner
- Private
The ZIP code it serves
The short answer
Nothing in EPA’s and California’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. 1 health-based violation since 2016.
What was found
Total trihalomethanes (TTHM), haloacetic acids (HAA5) and nitrate: California’s own results, samples taken from Aug. 24, 2020 to Aug. 19, 2025, with EPA’s 2012 to 2019 file for earlier years.
Arsenic, chromium (total) and fluoride: EPA’s compliance monitoring file, samples taken from April 23, 2018 to Oct. 1, 2018. Newer results are in the utility’s annual water quality report.
Below EPA’s limits2
Total trihalomethanes (TTHM)
Forms or is added in treatment
43.5ppb
Highest yearly average, 2020 to 2025
2025, one sample: 30 ppb
Averaged by year, the highest was 43.5 ppb, in 2022, below EPA’s legal limit of 80 ppb. In 2025, the latest year on file, its one sample was 30 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 34 ppb, in 2019.
What handles it
- NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
- NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
Haloacetic acids (HAA5)
Forms or is added in treatment
30.8ppb
Highest yearly average, 2020 to 2025
2025, one sample: 16 ppb
Averaged by year, the highest was 30.8 ppb, in 2021, below EPA’s legal limit of 60 ppb. In 2025, the latest year on file, its one sample was 16 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 32 ppb, in 2019.
What handles it
No certification claim covers this compound yet.
5 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Arsenic
- Chromium (total)
- Fluoride
- Lead
- Nitrate
Violations since 2016
| Contaminant or rule | Type | Period | Measured | Status |
|---|---|---|---|---|
| Lead and Copper Rule Revisions | The required inventory of lead service lines was not completed or submitted on time.EPA: LSL Inventory | Oct. 17, 2024 | — | Unaddressed |
| Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 3 monitoring or reporting violations not shown. | ||||
What this report can’t tell you
Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5) and nitrate results here are California’s own from 2020 on, with EPA’s national file for 2012 to 2019. Arsenic, chromium (total) and fluoride come from EPA’s file alone, which ends in 2019. Salyer Mutual WC (Formerly Riverview Ac)’s own annual report, which it must send you every year, has newer results for those and the contaminants this page does not show.
Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.
Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; California’s results run from Aug. 24, 2020 to Aug. 19, 2025; EPA’s compliance samples are from April 23, 2018 to Oct. 1, 2018.
Testing your own tap
The 3 labs California certifies closest to the area Salyer Mutual WC (Formerly Riverview Ac) serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Microbac Laboratories, Inc. - Arcata
Arcata, CA · about 30 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Humboldt County Public Health Laboratory
Eureka, CA · about 35 miles
Certified for bacteria
Pace Analytical Services, LLC - Redding
Redding, CA · about 62 miles
Certified for bacteria
Sources
- EPA UCMR 5 occurrence data, file of Oct. 15, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q3
- California State Water Resources Control Board, Division of Drinking Water, results from Jan. 1, 2020 to July 17, 2026, read Oct. 8, 2026
- EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
- Certified labs: California State Water Resources Control Board, ELAP accredited laboratories and their fields of accreditation, read Oct. 17, 2026; distances from the Census 2020 ZIP code tabulation area gazetteer
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
PWSID CA5304501. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Nothing here is above a health goalIn EPA’s and California’s records for this utility. They don’t cover everything, which is why the next step matters.Every contaminant TapBuff tracks
- Get the utility’s own reportSalyer Mutual WC (Formerly Riverview Ac) must send you a water quality report every year. It covers contaminants this page does not show, and has newer results than EPA’s national file for the ones here that come from it.How to read it
- Test your own tap for leadYour service line, solder and fixtures decide the lead at your faucet, not the utility’s average.Lead in your water: what to do
- Decide if you want a filter at allA filter for taste or chlorine is a preference, not a need. The standards say what each kind can do.NSF/ANSI standards, decoded