What is OXAMYL in drinking water?

OXAMYL averages 5.4 violations per affected system (43,557 total / 8,002 systems) in the EPA SDWIS extract.

How many water systems have OXAMYL violations?

8,002 systems sit in the mid footprint band (mid footprint (≤ 8,691 systems)).

Are OXAMYL violations dangerous?

In this extract, 0% are health-based. Recorded findings are monitoring/reporting class, not MCL exceedances.

Where does OXAMYL sit in the national contaminant ledger?

#68 of 157 indexable contaminants by violation volume - middle-third volume (≤ 49,133 violations), mid 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

OXAMYL in Drinking Water

Compiled by PlainWater · May 15, 2026

5.4 violations per affected system (43,557 across 8,002) - mid load (≤ 5.8 violations per affected system).

Browse all SDWIS contaminants →

EPA contaminant code: 2036

Total Violations

43,557

Systems Affected

8,002

Health-Based %

Violations / System

5.4

OXAMYL standing, mid-volume SDWIS third

OXAMYL lands in the middle third by violation volume (43,557), large enough for peer comparisons but not one of the handful of analytes that dominate the fleet-wide SDWIS ledger. Load sits mid-pack at 5.4 violations per affected system (mid load (≤ 5.8 violations per affected system)). None of the recorded OXAMYL violations in this extract are classified health-based; the trail is procedural. Among 157 indexable contaminants, this page is #68 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

Benzo(a)pyrene (43,900) Di(2-ethylhexyl) adipate (44,433) Carbofuran (44,569) Hexachlorocyclopentadiene (44,735)

Nearest by systems affected

Dinoseb (7,960 systems) Groundwater Rule (7,907 systems) HEXACHLOROBENZENE (7,902 systems) Di(2-ethylhexyl) phthalate (8,357 systems)

OXAMYL: monitoring/reporting trail

0% health-based · 100.0% monitoring/reporting across 43,557 records.

Health-based (0%) Monitoring/Reporting (100.0%)

Most Affected Water Systems

System	State	Violations	Population
Pinnacle Water Association	WV	184	85
Salem Heights Estate	PA	157	62
Congregation Ohr Menachem	PA	149	30
Coal Mountain Water	WV	149	80
Skyview Estates	IL	124	56
Prague	OK	99	2,395
Frankfort Psd	WV	99	6,747
27 Maple Drive	CT	88	38
Coxville Water Assn #1	WA	86	26
Aqua PA Sun Valley	PA	79	120
Neshaminy Manor Center	PA	74	2,100
Springhill Park Subdivision	MT	72	90
Willow Springs MHP	IN	66	25
Helena RV and Mobile Home Park	MT	66	250
PA American Audubon	PA	65	8,200
Oilton	OK	64	1,435
Lewis River Golf Course	WA	64	300
Seneca Trail Christian Academy	WV	64	100
Malta City Of	MT	63	1,800
Paradise Stream Resor	PA	63	774
Indian Creek Valley Water Auth	PA	63	7,000
Ambler Boro Water Dept	PA	60	20,000
Criswell Court MHP	IL	56	94
Tooele City Water System	UT	56	37,100
Plymouth Community Church	IN	53	90
Taggares Fruit Co	WA	53	152
Payson Town Of	AZ	52	17,682
Pbc Linear	IL	52	140
Manhasset Lakeville WD	NY	52	43,000
Tower Springs LLC	PA	51	25

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.