What you need to know

What forms to use

Form TCEQ 20467 – used for selecting sites and approval by TCEQ

Form Homeowner Instructions – can be provided to homeowner to assist in sample collection. *PWS retains collection information sheet.

Form TCEQ 20683 – to be submitted to the laboratory with the sample

How Many Samples Are Required and When

System Size

(number of people served)

More than 100,000
10,001 to 100,000
3,301 to 10,000
501 to 3,300
101 to 500
100 or fewer

Number of sites for

Intial/Routine monitoring

100
60
40
20
10
5

Number of sites for Reduced monitoring:

1YR, 3YR, or 9YR

50
30
20
10
5
5

Initial Sampling: Systems must complete two (2) rounds of consecutive six month sampling. The monitoring periods for collection are:

6M1: Jan 1 - June 30, analytical results are due to TCEQ no later than July 10

6M2: July 1 - Dec 31, analytical results are due to TCEQ no later than Jan 10

Reduced Sampling: Systems that have completed their two rounds of initial sampling can be reduced to 1 year or 3 year sampling based on their 90th percentile lead and copper sampling during their initial sampling period. Reduced monitoring has a second requirement of a seasonal sampling period:

Reduced: Jun 1 - Sept 30, analytical results are due to TCEQ no later than Oct 10