Compliance record
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 | 1320.5 µg/L 102% of the EPA limit, at the 95th percentile of samples — 1300 µg/L
worst single sample: 2000 µg/L | 70/70 | SYR4 | 2012–2019 |
| Lead | 3.865 µg/L 26% of the EPA limit 15 µg/L
worst single sample: 6.26 µg/L | 26/70 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 19/19 | LCR | 2025 |
| Nitrate-Nitrite | 510 µg/L 5.1% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Bromodichloromethane | 7.2745 µg/L No EPA limit set
worst single sample: 7.81 µg/L | 8/8 | SYR4 | 2012–2019 |
| Chloroform | 19.185 µg/L No EPA limit set
worst single sample: 19.85 µg/L | 8/8 | SYR4 | 2012–2019 |
| Dibromochloromethane | 1.8715 µg/L No EPA limit set
worst single sample: 1.98 µg/L | 8/8 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 8.3485 µg/L No EPA limit set
worst single sample: 8.45 µg/L | 8/8 | SYR4 | 2012–2019 |
| TTHM | 28.261 µg/L 35% of the EPA limit 80 µg/L
worst single sample: 29.64 µg/L | 8/8 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 17.3515 µg/L 29% of the EPA limit 60 µg/L
worst single sample: 17.88 µg/L | 8/8 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 9.045 µg/L No EPA limit set
worst single sample: 9.43 µg/L | 8/8 | SYR4 | 2012–2019 |
| Lithium | 13.3 µg/L No EPA limit set | 2/2 | UCMR-5 | 2025 |
| Arsenic | 1.93 µg/L 19% of the EPA limit 10 µg/L | 1/1 | SYR4 | 2016 |
| Barium | 180 µg/L 9% of the EPA limit 2000 µg/L | 1/1 | SYR4 | 2018 |
| Chromium | 3.33 µg/L 3.3% of the EPA limit 100 µg/L | 1/1 | SYR4 | 2018 |
| Combined Radium (-226 And -228) | 0.2500 pCi/L 5% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2017 |
| Combined Uranium | 0.7000 µg/L 2.3% of the EPA limit 30 µg/L | 1/1 | SYR4 | 2017 |
| Fluoride | 1010 µg/L 25% of the EPA limit 4000 µg/L | 1/1 | SYR4 | 2018 |
| Gross Alpha, Excl. Radon And U | 4.54 pCi/L 30% of the EPA limit 15 pCi/L | 1/1 | SYR4 | 2017 |
76 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbon TetrachlorideChlordaneDichloromethaneDalaponDibromoacetic AcidDinosebEndrinEthylbenzeneHfpo-DaHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Cass Rural Water District-Phase Ii
Is Cass Rural Water District-Phase Ii tap water safe to drink?
EPA monitoring detected 19 contaminants in Cass Rural Water District-Phase Ii'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 Cass Rural Water District-Phase Ii's water?
EPA monitoring detected Copper, Lead, Lead, Nitrate-Nitrite, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does Cass Rural Water District-Phase Ii serve?
Cass Rural Water District-Phase Ii reports serving 1,700 people in North Dakota, per its EPA record.
Has Cass Rural Water District-Phase Ii had any water quality violations?
The EPA has no formal drinking-water violations on file for Cass Rural Water District-Phase Ii.
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.