Is Mason Co Psd-Letart Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Mason

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

health-based violations

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Unaddressed	2026-03-13
MR	Monitoring	Unaddressed	2025-10-01
MR	Monitoring	Unaddressed	2025-10-01
Other	Monitoring	Resolved	2019-07-01
Other	Monitoring	Resolved	2019-07-01
MR	Monitoring	Resolved	2014-01-01 → 2016-12-31
MR	Monitoring	Resolved	2014-01-01 → 2016-12-31
MR	Monitoring	Resolved	2014-01-01 → 2016-12-31
MR	Monitoring	Resolved	2014-01-01 → 2016-12-31
MR	Monitoring	Resolved	2014-01-01 → 2016-12-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Copper	503.65 µg/L 39% of the EPA limit 1300 µg/L worst single sample: 523 µg/L	50/50	SYR4	2013–2019
Lead	6.84 µg/L 46% of the EPA limit 15 µg/L worst single sample: 14.8 µg/L	49/50	SYR4	2013–2019
Nitrate	1970 µg/L 20% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Lead	0.0045 mg/L 30% of the EPA limit 0.0150 mg/L	10/10	LCR	2025
Bromoform	2.44 µg/L No EPA limit set worst single sample: 3 µg/L	8/9	SYR4	2012–2019
Dibromochloromethane	5.5885 µg/L No EPA limit set worst single sample: 5.69 µg/L	8/9	SYR4	2012–2019
Dichloroacetic Acid	4.8405 µg/L No EPA limit set worst single sample: 4.9 µg/L	8/8	SYR4	2012–2019
TTHM	23.355 µg/L 29% of the EPA limit 80 µg/L worst single sample: 23.6 µg/L	8/9	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	13.69 µg/L 23% of the EPA limit 60 µg/L worst single sample: 15.3 µg/L	8/8	SYR4	2012–2019
Bromodichloromethane	8.266 µg/L No EPA limit set worst single sample: 8.68 µg/L	7/9	SYR4	2012–2019
Chloroform	10.051 µg/L No EPA limit set worst single sample: 11.2 µg/L	7/9	SYR4	2012–2019
Dibromoacetic Acid	3.226 µg/L No EPA limit set worst single sample: 3.46 µg/L	7/8	SYR4	2012–2019
Trichloroacetic Acid	2.07 µg/L No EPA limit set worst single sample: 2.09 µg/L	6/8	SYR4	2012–2019
Monochloroacetic Acid	6.153 µg/L No EPA limit set worst single sample: 6.57 µg/L	3/8	SYR4	2012–2019
Barium	68.52 µg/L 3.4% of the EPA limit 2000 µg/L worst single sample: 68.6 µg/L	2/2	SYR4	2016–2019
Fluoride	208.5 µg/L 5.2% of the EPA limit 4000 µg/L worst single sample: 210 µg/L	2/2	SYR4	2016–2019
Arsenic	2.8 µg/L 28% of the EPA limit 10 µg/L	1/4	SYR4	2013–2019
Gross Alpha, Excl. Radon And U	0.7480 pCi/L 5% of the EPA limit 15 pCi/L	1/1	SYR4	2013
Nitrite	320 µg/L 32% of the EPA limit 1000 µg/L	1/1	SYR4	2019

56 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Frequently asked questions about Mason Co Psd-Letart

Is Mason Co Psd-Letart tap water safe to drink?

EPA monitoring detected 19 contaminants in Mason Co Psd-Letart's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Mason Co Psd-Letart's water?

EPA monitoring detected Copper, Lead, Nitrate, Lead, Bromoform, and others. The full list with the level and data source for each is above.

How many people does Mason Co Psd-Letart serve?

Mason Co Psd-Letart reports serving 3,303 people, per its EPA record.

Has Mason Co Psd-Letart had any water quality violations?

The EPA has 77 violations on file for Mason Co Psd-Letart, of which 1 is health-based (a contaminant limit or required treatment was breached) and 3 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.