| LRAA | Locational running annual average |
| QA | Quarterly running average |
| DBPs | Disinfectant Byproducts |
| THMs | Trihalomethanes |
| TOC | Total organic carbon |
| HAAs | Haloacetic acids |
| MCL | Maximum concentration limit |
| IDSE | Initial distribution system evaluation |
| BDCM | Bromodichloromethane |
| TBM | Bromoform |
| TCM | Chloroform |
| DBCM | Dibromochloromethane |
| MCAA | Monochloroacetic acid |
| DCAA | Dichloroacetic acid |
| TCAA | Trichloroacetic acid |
| MBAA | Monobromoacetic acid |
| DBAA | Dibromoacetic acid |
| HCl | Hydrochloric acid |
| SGA | Small for gestational age |
| PTB | Preterm birth |
| FGR | Fetal growth restriction |
| LBW | Low birthweight |
| IUGR | Intrauterine growth retardation |
| GM | Geometric Mean |
| SD | Standard deviation |
| CV | Coefficient of variation |
| CI | Confidence interval |