What is Bromate in drinking water?

Bromate averages 10.2 violations per affected system (1,422 total / 140 systems) in the EPA SDWIS extract.

How many water systems have Bromate violations?

140 systems sit in the mid footprint band (mid footprint (≤ 8,691 systems)).

Are Bromate violations dangerous?

14.3% are health-based. The rest are monitoring/reporting, still compliance failures, but not the same as an MCL exceedance.

Where does Bromate sit in the national contaminant ledger?

#100 of 157 indexable contaminants by violation volume - middle-third volume (≤ 49,133 violations), dense load (> 5.8 violations per affected system).

Where does this contaminant data come from?

EPA Safe Drinking Water Information System (SDWIS) quarterly extracts. Counts are cumulative compliance records, not a live risk score for a single tap.

Contaminants →

EPA SDWIS Dense per-system load

Bromate in Drinking Water

Compiled by PlainWater · May 15, 2026

10.2 violations per affected system (1,422 across 140) - dense load (> 5.8 violations per affected system).

Browse all SDWIS contaminants →

EPA contaminant code: 1011

Total Violations

1,422

Systems Affected

140

Health-Based %

14.3%

Violations / System

10.2

Bromate standing, mid-volume SDWIS third

Bromate lands in the middle third by violation volume (1,422), large enough for peer comparisons but not one of the handful of analytes that dominate the fleet-wide SDWIS ledger. Load is concentrated: 10.2 violations per affected system (dense load (> 5.8 violations per affected system)), which usually means repeat findings on the same PWSIDs rather than one-off detections spread thin. Health-based share is 14.3% - a material slice of the record is exposure-relevant, with the rest monitoring or reporting. Among 157 indexable contaminants, this page is #100 by violation volume. Utilities listed below are ranked by cumulative violation count for this analyte; pair that with population served to gauge household exposure scale.

Nationwide similar contaminants

Nearest by violation volume

Turbidity (1,581) Chlorine dioxide (1,629) Coliform (Pre-TCR) (716) Cryptosporidium (2,446)

Nearest by systems affected

38-STRONTIUM-90 (138 systems) Tritium (136 systems) Lead (78 systems) COPPER, FREE (36 systems)

Bromate: mixed health vs monitoring split

14.3% health-based · 85.7% monitoring/reporting across 1,422 records.

Health-based (14.3%) Monitoring/Reporting (85.7%)

Most Affected Water Systems

System	State	Violations	Population
McClain Co RWD # 8	OK	96	1,897
Tower Springs LLC	PA	64	25
Far Away Auburn	PA	64	25
Central Water Conditioning	MT	45	50
Grand Meadows	OK	38	94
Big Spring Vended Water	PA	32	25
Stillwater Utilities Authority	OK	31	53,000
Big Valley Water Inc	MT	30	200
Altoona Water Authority	PA	29	62,500
Northwest Water Treatment Co	MT	28	118
Lawton	OK	26	92,757
Lehrkinds Big Spring Water	MT	24	2,575
Culligan Water Facility Butte	MT	24	423
Indian Trail Spring	PA	24	25
Big Spring Vended Water	PA	21	25
Riverside WC	CO	19	90
Riverside WC	CO	19	90
Cross Lutheran School	IL	19	140
Temple Springs	PA	19	25
Crwa Lake Dunlap WTP	TX	18	14
Goodman Sanitary Dist No 1	WI	18	350
Augusta Water Inc	PA	17	25
City of Cushing	TX	17	967
Hilltop WC	CO	16	285
West Grand Valley WA	CO	16	100
Jamestown Boro Water Auth	PA	16	680
Rayburn Country MUD	TX	16	3,453
Hazle Water Depot LLC	PA	15	25
Marion, City Of	KS	13	1,902
Glenbrook Water Cooperative Inc	NV	13	1,000

Context: understanding water quality data · is my water safe?

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

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the EPA Safe Drinking Water Information System (SDWIS). Consult a qualified professional before making decisions based on this data.

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

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.