No health-based violations on EPA record since 2016.
Serves about 3,352 people (1,140 connections) with surface water bought from Effingham.
From EPA's record for IL0495150. PurityMap is independent of Lake Sara Area Water Co-Op, Inc..
Are you this utility? Correct this listing →
No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2025 to September 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorobutanoic acid (PFBA) | 5.5 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-04 to 2025-09-10 | UCMR5 Analytical Results: LAKE SARA AREA WATER CO-OP, INC. (IL0495150) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure
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.
Get PurityMap updates about this water system.
Follow this water →Lake Sara Area Water Co-Op, Inc.'s phone number on EPA record is 217-342-9658. Its mailing address is 114 WEST WASHINGTON AVENUE, P.O. BOX 874, EFFINGHAM, IL 62401.
According to EPA's record, Lake Sara Area Water Co-Op, Inc. uses surface water bought from Effingham.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Lake Sara Area Water Co-Op, Inc.'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 Lake Sara Area Water Co-Op, Inc.. Its phone number on EPA record is 217-342-9658. Its mailing address on EPA record is 114 WEST WASHINGTON AVENUE, P.O. BOX 874, EFFINGHAM, IL 62401. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.