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Tap water quality report

Casitas Del Mesa Mhp

EPA monitoring tested this supplier for 68 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

68
contaminants tested
11
detected
180
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Dawson

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.

0
health-based violations
775
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
40.015 µg/L 3.1%
of the EPA limit 1300 µg/L
worst single sample: 40.1 µg/L
18/20 SYR4 2013–2018
Lead
4.99 µg/L 33%
of the EPA limit 15 µg/L
worst single sample: 5.5 µg/L
18/20 SYR4 2013–2018
Nitrate-Nitrite
410 µg/L 4.1%
of the EPA limit 10000 µg/L
 6/14 SYR4 2014–2019
Gross Alpha, Excl. Radon And U
11.94 pCi/L 80%
of the EPA limit 15 pCi/L
worst single sample: 12.3 pCi/L
5/5 SYR4 2013–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2027
Combined Radium (-226 And -228)
0.3739 pCi/L 7.5%
of the EPA limit 5 pCi/L
worst single sample: 0.3740 pCi/L
4/4 SYR4 2013–2014
Barium
44.26 µg/L 2.2%
of the EPA limit 2000 µg/L
worst single sample: 44.7 µg/L
2/2 SYR4 2014–2019
Fluoride
3595 µg/L 90%
of the EPA limit 4000 µg/L
worst single sample: 3600 µg/L
2/2 SYR4 2015–2019
Arsenic
0.9100 µg/L 9.1%
of the EPA limit 10 µg/L
 1/2 SYR4 2014–2019
Cadmium
0.7800 µg/L 16%
of the EPA limit 5 µg/L
 1/2 SYR4 2014–2019
Chromium
2.1 µg/L 2.1%
of the EPA limit 100 µg/L
 1/2 SYR4 2014–2019
57 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, TotalBromodichloromethaneBromoformChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CRISAFULLI, FRANK D
Phone
406-365-8900

Frequently asked questions about Casitas Del Mesa Mhp

Is Casitas Del Mesa Mhp tap water safe to drink?

EPA monitoring detected 11 contaminants in Casitas Del Mesa Mhp'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 Casitas Del Mesa Mhp's water?

EPA monitoring detected Copper, Lead, Nitrate-Nitrite, Gross Alpha, Excl. Radon And U, Lead, and others. The full list with the level and data source for each is above.

How many people does Casitas Del Mesa Mhp serve?

Casitas Del Mesa Mhp reports serving 180 people in Montana, per its EPA record.

Has Casitas Del Mesa Mhp had any water quality violations?

The EPA has 775 violations on file for Casitas Del Mesa Mhp, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 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.