First Mace Meadow # 1
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
- 838 people
- Connections
- 337
- Water source
- Surface water bought from another system
- Based in
- Pine Grove, CA
- County
- Amador
- Owner
- Local government
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. 4 health-based violations since 2016.
What was found
Haloacetic acids (HAA5) and total trihalomethanes (TTHM): California’s own results, samples taken from Jan. 13, 2020 to June 29, 2026, with EPA’s 2012 to 2019 file for earlier years.
Below EPA’s limits2
Haloacetic acids (HAA5)
Forms or is added in treatment
52ppb
Highest yearly average, 2020 to 2026
2026 average: 46.1 ppb
Averaged by year, the highest was 52 ppb, in 2022, below EPA’s legal limit of 60 ppb. Its highest single sample was 108 ppb. In 2026, the latest year on file, its five samples averaged 46.1 ppb. EPA recorded no violation for haloacetic acids (HAA5) at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 66.5 ppb, in 2014, and EPA recorded violations in 2016 and 2017.
What handles it
No certification claim covers this compound yet.
Total trihalomethanes (TTHM)
Forms or is added in treatment
45.9ppb
Highest yearly average, 2020 to 2026
2026 average: 39.8 ppb
Averaged by year, the highest was 45.9 ppb, in 2025, below EPA’s legal limit of 80 ppb. Its highest single sample was 75.7 ppb. In 2026, the latest year on file, its five samples averaged 39.8 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 65.4 ppb, in 2015.
What handles it
- NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
- NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
One compound tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Lead
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 |
| Total Haloacetic Acids (HAA5) | The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average | Jan. 1, 2017 to March 31, 2017 | 0.068 MG/L | Resolved |
| Total Haloacetic Acids (HAA5) | The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average | July 1, 2016 to Sept. 30, 2016 | 0.065 MG/L | Resolved |
| Total Haloacetic Acids (HAA5) | The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average | April 1, 2016 to June 30, 2016 | 0.069 MG/L | Resolved |
| Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 1 monitoring or reporting violation not shown. | ||||
What this report can’t tell you
Everything else. Haloacetic acids (HAA5) and total trihalomethanes (TTHM) results here are California’s own from 2020 on, with EPA’s national file for 2012 to 2019. First Mace Meadow # 1’s own annual report, which it must send you every year, has 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 Jan. 13, 2020 to June 29, 2026.
Testing your own tap
The 3 labs California certifies closest to the area First Mace Meadow # 1 serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
49er Water Laboratory
Jackson, CA · about 24 miles
Certified for bacteria, nitrate, minerals and other inorganics
Precision Enviro-Tech
Twain Harte, CA · about 35 miles
Certified for bacteria
Ceres Analytical Laboratory, Inc.
El Dorado Hills, CA · about 38 miles
Certified for organic chemicals
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 CA0310011. 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 reportFirst Mace Meadow # 1 must send you a water quality report every year. It covers contaminants this page does not show.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