Total trihalomethanes (TTHM) above the legal limit in the period starting January 2026.
Serves about 630 people (422 connections) with groundwater bought from Millstone PWD.
From EPA's record for IL1510100. PurityMap is independent of Golconda.
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6 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2026 | Total trihalomethanes (TTHM) | 0.088 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2026 | Total trihalomethanes (TTHM) | 0.09 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2025 | Total trihalomethanes (TTHM) | 0.092 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2025 | Total trihalomethanes (TTHM) | 0.084 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2025 | Total trihalomethanes (TTHM) | 0.086 mg/L | 0.080 mg/L | Archived |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From January 2023 | Arsenic | 11 µg/L | 0.010 mg/L | Resolved |
No lab results for other contaminants (like PFAS) are on file for this system. EPA required that testing from systems serving more than 3,300 people, plus a sample of smaller ones.
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
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Follow this water →Golconda's phone number on EPA record is 618-683-3341. Its mailing address is CITY OF GOLCONDA, P.O. BOX 511, 118 NORTH MONROE, GOLCONDA, IL 62938.
According to EPA's record, Golconda uses groundwater bought from Millstone PWD.
EPA's record shows 6 health-based violations for Golconda in the 10 years to July 9, 2026. Total trihalomethanes (TTHM) were above the legal limit in the period starting January 2026. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Golconda's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Golconda. Its phone number on EPA record is 618-683-3341. Its mailing address on EPA record is CITY OF GOLCONDA, P.O. BOX 511, 118 NORTH MONROE, GOLCONDA, IL 62938. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.