MESA CITY OF
AZ · PWS ID AZ0407095 · Community water system
104
contaminants tested
25
detected
466,000
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBS | 0.0152 ug/L | 10/70 | 2025 |
| PFHxS | 0.0093 ug/L | 4/70 | 2025 |
| PFHxA | 0.0032 ug/L | 1/70 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 7560 UG/L | 508/520 | SYR4 | 2012–2019 |
| TTHM | 104 UG/L | 366/371 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 44 UG/L | 341/372 | SYR4 | 2012–2019 |
| Chlorite | 1513 UG/L | 195/226 | SYR4 | 2012–2019 |
| COPPER, FREE | 381 UG/L | 154/154 | SYR4 | 2012–2018 |
| Arsenic | 13 UG/L | 128/135 | SYR4 | 2012–2019 |
| Barium | 130 UG/L | 112/112 | SYR4 | 2012–2019 |
| Chromium | 23 UG/L | 103/112 | SYR4 | 2012–2019 |
| Fluoride | 1187.46 UG/L | 90/110 | SYR4 | 2012–2019 |
| Lead | 41.7 UG/L | 73/154 | SYR4 | 2012–2018 |
| lithium | 525 ug/L | 70/70 | UCMR-5 | 2025 |
| Selenium | 2.9693 UG/L | 40/112 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 6600 UG/L | 34/34 | SYR4 | 2012–2016 |
| Tetrachloroethylene | 1.3 UG/L | 20/161 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0087 mg/L | 15/15 | LCR | 2024 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.0510 UG/L | 8/136 | SYR4 | 2012–2019 |
| Trichloroethylene | 0.7000 UG/L | 7/155 | SYR4 | 2012–2019 |
| Combined Radium (-226 and -228) | 1.5 PCI/L | 5/108 | SYR4 | 2012–2019 |
| Bromate | 30 UG/L | 4/20 | SYR4 | 2018–2019 |
| Antimony, Total | 2.83 UG/L | 1/112 | SYR4 | 2012–2019 |
| DICHLOROMETHANE | 0.9200 UG/L | 1/155 | SYR4 | 2012–2019 |
| Gross Alpha, Excl. Radon and U | 0.8000 PCI/L | 1/1 | SYR4 | 2015 |
79 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFDAPFDoAPFEESAPFHpAPFHpSPFMBAPFMPAPFNAPFOAPFOSPFPeAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneToxapheneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
MESA