Emerald II
What EPA’s and CDC’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
- 98 people
- Connections
- 60
- Water source
- Groundwater
- Based in
- Shelbyville, IN
- County
- Shelby
- Owner
- Private
The ZIP code it serves
The short answer
Nothing in EPA’s and CDC’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
Nitrate and arsenic: Indiana’s yearly averages per water system, as CDC’s Environmental Public Health Tracking Network publishes them, 2022 to 2023, with EPA’s 2012 to 2019 file for earlier years.
Fluoride, haloacetic acids (HAA5), total trihalomethanes (TTHM) and chromium (total): EPA’s compliance monitoring file, samples taken from Sept. 3, 2012 to Aug. 6, 2018. Newer results are in the utility’s annual water quality report.
Below EPA’s limits4
Nitrate
Comes from the source
3.7ppm
Highest yearly average, 2022 to 2023
Averaged by year, the highest was 3.7 ppm, in 2023, below EPA’s legal limit of 10 ppm. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 4.5 ppm, in 2016.
What handles it
- NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
- NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
Fluoride
Forms or is added in treatment
0.3ppm
Highest yearly average, 2014 to 2018
2018, one sample: 0.21 ppm
Averaged by year, the highest was 0.3 ppm, in 2014, below EPA’s legal limit of 4.0 ppm. In 2018, the latest year on file, its one sample was 0.21 ppm.
What handles it
- NSF/ANSI 58 look for “Fluoride Reduction”
- NSF/ANSI 53 look for “Fluoride”
Haloacetic acids (HAA5)
Forms or is added in treatment
4.0ppb
Highest yearly average, 2012 to 2018
2018 average: 1.9 ppb
Averaged by year, the highest was 4.0 ppb, in 2014, below EPA’s legal limit of 60 ppb. Its highest single sample was 4.6 ppb. In 2018, the latest year on file, its two samples averaged 1.9 ppb.
What handles it
No certification claim covers this compound yet.
Total trihalomethanes (TTHM)
Forms or is added in treatment
2.8ppb
Highest yearly average, 2012 to 2018
Averaged by year, the highest was 2.8 ppb, in 2018, below EPA’s legal limit of 80 ppb. Its highest single sample was 2.8 ppb. That was also the latest year on file.
What handles it
- NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
- NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Arsenic
- Chromium (total)
- 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 | — | Resolved |
| 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. Nitrate and arsenic results here are Indiana’s yearly averages as CDC publishes them, from 2022 on, with EPA’s national file for 2012 to 2019. Fluoride, haloacetic acids (HAA5), total trihalomethanes (TTHM) and chromium (total) come from EPA’s file alone, which ends in 2019. Emerald II’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; CDC’s yearly averages for Indiana cover 2022 to 2023; EPA’s compliance samples are from Sept. 3, 2012 to Aug. 6, 2018.
Testing your own tap
The 3 labs Indiana certifies closest to the area Emerald II serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Hancock Water Laboratory
Greenfield, IN · about 19 miles
Certified for bacteria
Indiana Dept. of Health Laboratories
Indianapolis, IN · about 27 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, radioactivity
Element Laboratories -Columbus
Columbus, IN · about 28 miles
Certified for bacteria
Indiana Department of Health laboratory: Test kits for well water: nitrate, fluoride, and arsenic, lead and copper, ordered from the lab and returned by mail. They are open to the public. Nitrate is $10 a sample plus $6.50 shipping per order, fluoride $10 plus shipping, and the arsenic, lead and copper kit $20 plus $6.50 shipping. Water Testing, Indiana Department of Health.
All 81 certified labs for IndianaSources
- EPA UCMR 5 occurrence data, file of Oct. 15, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q3
- CDC Environmental Public Health Tracking Network, yearly averages Indiana supplied to CDC, 2022 to 2023, read Oct. 8, 2026. TapBuff’s comparisons with EPA’s limits are its own, not CDC’s or Indiana’s.
- EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
- Certified labs: Indiana Department of Health, certified drinking water laboratories, read Oct. 10, 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 IN5273005. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Nothing here is above a health goalIn EPA’s and CDC’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 reportEmerald II 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