How many water violations are in Macomb County?

Macomb County has 2,728 total drinking water violations across 93 water systems, of which 188 are health-based violations. 97.8% of systems have at least one violation.

How many people get water from Macomb County systems?

Water systems in Macomb County serve approximately 830,956 people through 93 public water systems.

Has PFAS been detected in Macomb County water?

Under EPA UCMR5, 3 of 19 tested systems in Macomb County had at least one PFAS detection (15.8% of the UCMR5-tested subset - not of all 93 SDWIS systems).

What types of water sources supply Macomb County?

Water systems in Macomb County use GW (73 systems), SW (20 systems) as their primary water sources.

Are health-based violations serious?

Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 6.9% of Macomb County's violations are health-based. Among counties with any SDWIS violations, this extract puts Macomb County in the lower health-based share band. Not all violations indicate immediate health risk, but they require corrective action.

Where does Macomb County sit among U.S. counties for water-system population?

According to EPA SDWIS county population served used on /counties, Macomb County ranks #76 of 3,254 counties by people served, and #3 of 83 counties in Michigan. Ordinals use the same total_population DESC sort as the counties directory. See /methodology#corpus-placement.

Counties → Michigan

Macomb County, Michigan

Compiled by PlainWater · May 15, 2026

SDWIS compliance plate

Sheet MI099 · Macomb County 93 sys · 2,728 viol · #76/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-LOW · SRC-GW · SYS-MID · BOOK-FULL

VIOL-SEVERE 97.8% flagged
HEALTH-LOW 6.9% health
RANK-TOP #76/3254
PHOTO-FINISH ±0.2 pp
PFAS-LOW 15.8% detect
SRC-GW GW lead 78%
SYS-MID 93 systems
BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Missaukee County (+ 0.2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Macomb County ranks #76 of 3,254 counties by people served, and #3 of 83 counties in Michigan. See methodology · corpus placement.

Macomb County standing, mid-flagged corpus third

Flagged-system rate 97.8% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 6.9% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 15.8% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #76 of 3,254 · #3 of 83 in Michigan.

Water Systems

System Name	Population	Violations	PFAS
Warren, City Of	134,056	9	Clean
Sterling Heights, City Of	127,000	9	Clean
Clinton Township	100,513	15	Clean
Macomb Township	90,000	11	Clean
Shelby Township	72,000	8	Clean
St. Clair Shores, City Of	59,715	36	Clean
Roseville, City Of	47,299	14	Detected
Chesterfield Township	41,650	11	Clean
Eastpointe, City Of	32,442	16	Clean
Harrison Township	24,314	6	Clean
Mount Clemens, City Of	16,314	105	Detected
Washington Township	15,828	2	Clean
Fraser, City Of	14,297	40	Clean
New Baltimore, City Of	12,720	144	Clean
Center Line, City Of	8,257	23	Clean
Richmond, City Of	6,200	6	Clean
New Haven, Village Of	5,600	45	Clean
Utica, City Of	5,059	7	Detected
Romeo, Village Of	3,750	18	Clean
Lenox Township	3,000	0	-
Armada, Village Of	1,794	25	-
Springbrook Estates Mhc	990	61	-
Blake's Orchard Inc - 003	900	63	-
Woodside Bible Church	800	2	-
Armada High School	526	126	-
Fiddlers Cove	300	21	-
Washington MHP	268	31	-
Bushido Martial Arts, Inc.	250	12	-
Orchards Community Church	250	2	-
Old Stone Bar and Grill	200	32	-
Sacred Heart Rehabilitation Ctr	200	34	-
Sheena's Marketplace	200	18	-
St. John Lutheran Church - Ray	160	15	-
Striker's Entertainment Center	150	21	-
Woodland Associates	150	8	-
Heather Hls Golf & Racquet Clb	150	4	-
Simpson Pk LP-Tabernacle- Lower Well	150	25	-
Greystone Golf Club	150	2	-
Richmond Forest Golf Course	150	2	-
Cross Community Church	148	20	-
Adam's Corner	125	212	-
Bruce Township	115	48	-
St. Joseph's Catholic Church	115	110	-
North Macomb Sportman Club	100	13	-
Simpson Park Camp	100	20	-
Wolcott Mill Farm	100	3	-
Armada Senior Center	100	8	-
St. Maximilian Church	100	25	-
Kaatz Funeral Home	100	7	-
Living Word Church	100	10	-

Compare beyond Michigan

Mid-flagged peers for Macomb County

Cross-state counties nearest Macomb County on flagged-system share (97.8%) and cumulative violation count (2,728). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Compiled by PlainWater, Drinking Water Quality Editorial Process · May 15, 2026

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.