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.
4
health-based violations
4
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 1992-10-01 → 1992-10-31 |
| MCL | Health-based | Resolved | 1992-10-01 → 1992-10-31 |
| MCL | Health-based | Resolved | 1992-09-01 → 1992-09-30 |
| MCL | Health-based | Resolved | 1992-09-01 → 1992-09-30 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
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 |
|---|---|---|---|---|
| Nitrate | 8163.46 µg/L 82% of the EPA limit 10000 µg/L
worst single sample: 15709.7 µg/L | 1866/1866 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 121.1 µg/L 2422% of the EPA limit, at the 95th percentile of samples — 5 µg/L
worst single sample: 270 µg/L | 278/856 | SYR4 | 2012–2019 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.1800 µg/L 90% of the EPA limit 0.2000 µg/L
worst single sample: 0.2900 µg/L | 138/728 | SYR4 | 2012–2019 |
| TTHM | 4.6 µg/L 5.8% of the EPA limit 80 µg/L
worst single sample: 5.1 µg/L | 94/707 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 4795 µg/L 48% of the EPA limit 10000 µg/L
worst single sample: 5500 µg/L | 68/68 | SYR4 | 2016–2019 |
| Arsenic | 5.94245 µg/L 59% of the EPA limit 10 µg/L
worst single sample: 6.555 µg/L | 52/221 | SYR4 | 2012–2019 |
| Chloroform | 4.6815 µg/L No EPA limit set
worst single sample: 5.1 µg/L | 52/709 | SYR4 | 2012–2019 |
| Combined Uranium | 10.5768 µg/L 35% of the EPA limit 30 µg/L
worst single sample: 15.0252 µg/L | 51/63 | SYR4 | 2012–2019 |
| Fluoride | 180 µg/L 4.5% of the EPA limit 4000 µg/L
worst single sample: 780 µg/L | 35/177 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 25/25 | LCR | 2025 |
| Barium | 115.5 µg/L 5.8% of the EPA limit 2000 µg/L
worst single sample: 120 µg/L | 10/186 | SYR4 | 2012–2019 |
| Trichloroethylene | 0.7220 µg/L 14% of the EPA limit 5 µg/L
worst single sample: 0.7400 µg/L | 7/856 | SYR4 | 2012–2019 |
| Copper | 91.9298 µg/L 7.1% of the EPA limit 1300 µg/L
worst single sample: 120 µg/L | 6/187 | SYR4 | 2012–2019 |
| 1,2-Dichloropropane | 0.7580 µg/L 15% of the EPA limit 5 µg/L
worst single sample: 0.7800 µg/L | 5/856 | SYR4 | 2012–2019 |
| Antimony, Total | 0.1638 µg/L 2.7% of the EPA limit 6 µg/L
worst single sample: 0.1840 µg/L | 5/186 | SYR4 | 2012–2019 |
| Dibromochloromethane | 1.376 µg/L No EPA limit set
worst single sample: 1.47 µg/L | 5/780 | SYR4 | 2012–2019 |
| Lead | 0.2272 µg/L 1.5% of the EPA limit 15 µg/L
worst single sample: 0.2450 µg/L | 5/187 | SYR4 | 2012–2019 |
| Bromoform | 0.9950 µg/L No EPA limit set
worst single sample: 1.04 µg/L | 4/780 | SYR4 | 2012–2019 |
| Chromium | 3.2878 µg/L 3.3% of the EPA limit 100 µg/L
worst single sample: 3.304 µg/L | 4/186 | SYR4 | 2012–2019 |
| Selenium | 0.3222 µg/L 0.6% of the EPA limit 50 µg/L
worst single sample: 0.3270 µg/L | 4/186 | SYR4 | 2012–2019 |
| Bromodichloromethane | 1.2955 µg/L No EPA limit set
worst single sample: 1.31 µg/L | 2/780 | SYR4 | 2012–2019 |
| Cadmium | 0.0894 µg/L 1.8% of the EPA limit 5 µg/L
worst single sample: 0.0940 µg/L | 2/186 | SYR4 | 2012–2019 |
| Cyanide | 180 µg/L 90% of the EPA limit 200 µg/L | 1/177 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 0.5900 pCi/L 12% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2018 |
| Mercury | 0.0120 µg/L 0.6% of the EPA limit 2 µg/L | 1/178 | SYR4 | 2012–2019 |
| Toluene | 2.94 µg/L 0.3% of the EPA limit 1000 µg/L | 1/856 | SYR4 | 2012–2019 |
79 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneThallium, TotalTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Cws - Visalia
Is Cws - Visalia tap water safe to drink?
EPA monitoring detected 32 contaminants in Cws - Visalia'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 Cws - Visalia's water?
EPA monitoring detected Nitrate, Tetrachloroethylene, 1,2-DIBROMO-3-CHLOROPROPANE, TTHM, Nitrate-Nitrite, and others. The full list with the level and data source for each is above.
How many people does Cws - Visalia serve?
Cws - Visalia reports serving 148,496 people in California, per its EPA record.
Has Cws - Visalia had any water quality violations?
The EPA has 4 violations on file for Cws - Visalia, of which 4 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.