Table 2.

First-trimester disinfection by-product (DBP) (μg/L) exposure levels for the study population.

DBP metric	Mean ± SD	25th %	50th %	75th %	90th %	95th %	Maximum
DBP9	65.07 ± 36.49	44.14	69.57	92.14	107.8	117.03	181.59
THM4	42.67 ± 24.05	29.26	44.53	61.37	72.71	76.63	125.32
THMBr	8.28 ± 6.51	4.75	6.75	10.17	17.87	21.20	42.48
Chloroform	34.39 ± 21.56	17.38	36.07	51.03	62.65	67.15	98.99
BDCM	6.85 ± 5.05	4.47	6.12	8.36	13.04	16.35	37.38
DBCM	1.32 ± 2.01	0.00	0.56	1.57	3.97	5.98	14.53
Bromoform	0.12 ± 0.46	0.00	0.00	0.00	0.26	0.86	7.06
HAA5	22.40 ± 14.89	11.34	22.38	31.18	42.52	47.49	100.00
TCAA	11.53 ± 8.42	5.40	11.01	16.30	22.16	26.37	73.39
DCAA	9.90 ± 6.61	5.30	10.38	13.67	18.61	21.29	38.89
MCAA	0.83 ± 3.05	0.00	0.05	0.84	1.53	2.13	62.39
DBAA	0.17 ± 0.70	0.00	0.00	0.00	0.47	1.06	21.78
MBAA	0.02 ± 0.26	0.00	0.00	0.00	0.00	0.00	10.63
Note: %, percentile; DBP9, sum of chloroform, bromodichloromethane (BDCM), dibromochloromethane (DBCM), bromoform, monochloroacetic acid (MCAA), dichloroacetic acid (DCAA), trichloroacetic acid (TCAA), monobromoacetic acid (MBAA), and dibromoacetic acid (DBAA); HAA5, sum of MCAA, DCAA, TCAA, MBAA, and DBAA; THM4, sum of chloroform, BDCM, DBCM, and bromoform; THMBr, sum of BDCM, DBCM, and bromoform.