Water distribution · Illinois

DWM-Mayfair Pumping Station | 4850 W. Wilson

Name: DWM-Mayfair Pumping Station | 4850 W. Wilson Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Chicago, IL · ~27 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

F
Failing Safety Record: 9.3
Avg TCR: 1.2
Industry avg: 0
Fatalities

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The verdict

DWM-Mayfair Pumping Station | 4850 W. Wilson runs at 772% of its industry's injury rate - far more dangerous than the typical Water distribution workplace, earning a grade F.

DWM-Mayfair Pumping Station | 4850 W. Wilson: 9.3 TCR = 772% of Water distribution BLS 1.2 · 2y Form 300A (see methodology below)

DWM-Mayfair Pumping Station | 4850 W. Wilson safety composite

DWM-Mayfair Pumping Station | 4850 W. Wilson scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on total case rate (tcr) (safer than 15%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

31/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): F 9.26 per 100 workers

Safer than 15% of industry peers
DART rate: F 3.7 per 100 workers

Safer than 34% of industry peers
Fatalities: D 0

Safer than 51% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

TCR Δ

−11.1

2023→2024

DWM-Mayfair Pumping Station | 4850 W. Wilson injury rate improved

DWM-Mayfair Pumping Station | 4850 W. Wilson's TCR fell 11.1 from 14.8 in 2023 to 3.7 in 2024. Peak filing year was 2023 at 14.8 TCR. In 2024, DART was 0.4× this establishment's average TCR (severity share of cases).

2023=14.8 · 2024=3.7

OSHA ITA Form 300A scorecard

Establishment book 221310 · Chicago, IL ABOVE-IND · SMALL

Grade F · TCR 9.3 · 772% of ind

DART 3.7 DART
RANK #44/60
PHOTO City of Winsted
BOOK 2y book
INJ 5 inj
SIZE ~27 FTE

Nearest TCR peer: City of Winsted (0.0 TCR gap)

Read with this employer → · Industry book → · Illinois employers → · Look up another →

This site

9.3
Meter Shop

9.3
City of Winste

9.2
BWS-Heeia

9.2
Water Treatmen

9.2

What this shows DWM-Mayfair Pumping Station | 4850 W. Wilson averages 9.3 TCR (772% of the Water distribution BLS benchmark).

DWM-Mayfair Pumping Station | 4850 W. Wilson TCR series: 2023=14.8 · 2024=3.7 · BLS 1.2

Where DWM-Mayfair Pumping Station | 4850 W. Wilson falls in its industry

727 Water distribution establishments

Safer than 15% of graded establishments in this industry, whose median TCR is 4.2.

Grade F

More dangerous than peersSafer than peers

Narrower to Illinois alone (the establishments it most directly competes with for workers and contracts): ranked #44 safest of 60 Water distribution employers in Illinois.

DWM-Mayfair Pumping Station | 4850 W. Wilson (27 employees, TCR 9.3) among 29 same-industry peers, split at the industry median of 53 employees and a TCR of 4.2

DWM-Mayfair Pumping Station | 4850 W. Wilson has fewer employees than the Water distribution median and a higher injury rate than the industry's median TCR of 4.2. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year	TCR	DART	Injuries	Illnesses	Fatalities
2024	3.7	3.7	1	0	0
2023	14.8	14.8	4	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

221310 · IL · Chicago

727 Water distribution employers nationwide with a credible TCR · 22,804 rated employers in Illinois with headcount on file · 2,934 employers in Chicago, IL · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	City of Winsted	WINSTED, MN	9.2 TCR
NAICS-TCR	BWS-Heeia	KANEOHE, HI	9.2 TCR
NAICS-TCR	Meter Shop	WINSTON-SALEM, NC	9.3 TCR
NAICS-TCR	Water Treatment	BETHEL, CT	9.2 TCR
STATE-SIZE	Pizzo Native Plant Nursery, LLC	LELAND	27 FTE
STATE-SIZE	C070	KANSAS	27 FTE
STATE-SIZE	Stonington, IL-R&D	STONINGTON	27 FTE
STATE-SIZE	Bloomington	BLOOMINGTON	27 FTE
CITY-NEAR	Chicago Public Schools	Chicago	49,500 FTE
CITY-NEAR	Chicago/Corporate	Chicago	18,831 FTE
CITY-NEAR	University of Illinois at Chicago	Chicago	13,092 FTE
CITY-NEAR	University Health Service UIC UIC Campus	Chicago	12,732 FTE
NAT-TCR	Miesc - Escanaba	Escanaba, MI	9.3 TCR
NAT-TCR	AP Westshore, Inc	Oshkosh, WI	9.3 TCR
NAT-TCR	Agri Direct of Selma	Selma, NC	9.3 TCR
NAT-TCR	Cook's Saw MFG LLC	Newton, AL	9.3 TCR
NAT-SIZE	Solid Concrete Service, Inc.	Menlo Park, CA	27 FTE
NAT-SIZE	PW Athletic Mfg. Company	Mesa, AZ	27 FTE
NAT-SIZE	Country Inn & Suites	Houghton, MI	27 FTE
NAT-SIZE	Brookdale Brushy Creek	Greer, SC	27 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2024, 2023. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.