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Tap water quality report

La Casa Grande Water and Sewer District

EPA monitoring tested this supplier for 67 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

67
contaminants tested
11
detected
404
people served
6
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Lewis and Clark

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.

6
health-based violations
48
violations on file
6
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2003-10-01 → 2003-10-31
MCL Health-based Resolved 2003-10-01 → 2003-10-31
MCL Health-based Resolved 2003-10-01 → 2003-10-31
MCL Health-based Resolved 2003-10-01 → 2003-10-31
MCL Health-based Resolved 2003-10-01 → 2003-10-31
MCL Health-based Resolved 2003-10-01 → 2003-10-31
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2020-10-01

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate-Nitrite
1290 µg/L 13%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2027
Copper
180 µg/L 14%
of the EPA limit 1300 µg/L
 10/10 SYR4 2014–2017
Lead
3 µg/L 20%
of the EPA limit 15 µg/L
 4/10 SYR4 2014–2017
Fluoride
400 µg/L 10%
of the EPA limit 4000 µg/L
 3/3 SYR4 2012–2017
Combined Uranium
3 µg/L 10%
of the EPA limit 30 µg/L
 2/2 SYR4 2013–2017
Gross Alpha, Excl. Radon And U
5.4 pCi/L 36%
of the EPA limit 15 pCi/L
 2/2 SYR4 2013–2017
Barium
70 µg/L 3.5%
of the EPA limit 2000 µg/L
 1/3 SYR4 2012–2017
Combined Radium (-226 And -228)
1 pCi/L 20%
of the EPA limit 5 pCi/L
 1/2 SYR4 2013–2017
Gross Beta Particle Activity
3.9 pCi/L
No EPA limit set
 1/1 SYR4 2013
Selenium
1 µg/L 2%
of the EPA limit 50 µg/L
 1/3 SYR4 2012–2017
56 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LEFERINK, SUE
Phone
406-439-5206

Frequently asked questions about La Casa Grande Water and Sewer District

Is La Casa Grande Water and Sewer District tap water safe to drink?

EPA monitoring detected 11 contaminants in La Casa Grande Water and Sewer District'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 La Casa Grande Water and Sewer District's water?

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

How many people does La Casa Grande Water and Sewer District serve?

La Casa Grande Water and Sewer District reports serving 404 people in Montana, per its EPA record.

Has La Casa Grande Water and Sewer District had any water quality violations?

The EPA has 48 violations on file for La Casa Grande Water and Sewer District, of which 6 are health-based (a contaminant limit or required treatment was breached) and 6 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.